| book | question number | deck | answer | question | A | B | C | D | illustration |
| 1 | 1 | D | C | INLAND ONLY You are navigating in a narrow channel and must remain in the channel for safe operation. Another vessel is crossing the channel ahead of you from your starboard and you doubt whether your vessel will pass safely. Which statement is TRUE? | You must stop your vessel, since the other vessel is the stand-on. | You must sound one short blast of the whistle and turn to starboard. | You must sound the danger signal. | You must stop your engines and you may sound the danger signal. | |
| 1 | 2 | D | B | INLAND ONLY What is the required whistle signal for a power-driven vessel leaving a dock or berth? | One short blast | One prolonged blast | Two short blasts | Two prolonged blasts | |
| 1 | 3 | D | B | INLAND ONLY In a narrow channel, you are underway on vessel "A" and desire to overtake vessel "B". After you sound two short blasts on your whistle, vessel "B" sounds five short and rapid blasts on the whistle. You should _________. | pass with caution on the port side of vessel "B" | hold your relative position, and then sound another signal after the situation has stabilized | answer the five short blast signal then stop your vessel until the other vessel initiates a signal | slow or stop and expect radical maneuvers from "B" | |
| 1 | 4 | D | B | INLAND ONLY A vessel proceeding downstream in a narrow channel on the Western Rivers sights another vessel moving upstream. Which vessel has the right of way? | The vessel moving upstream against the current | The vessel moving downstream with a following current | The vessel located more towards the channel centerline | The vessel sounding the first whistle signal | |
| 1 | 5 | D | A | INLAND ONLY You are overtaking a power-driven vessel in a narrow channel and wish to leave her on your starboard side. You may ___________________. | attempt to contact her on the radiotelephone to arrange for the passage | proceed to overtake her without sounding whistle signals | sound five short blasts | All of the above | |
| 1 | 6 | D | B | INLAND ONLY A vessel displaying a flashing blue light is _________________. | transferring dangerous cargo | a law enforcement vessel | a work boat | engaged in a race | |
| 1 | 7 | D | A | INLAND ONLY When power-driven vessels are crossing, a signal of one short blast by either vessel means _____. | "I intend to leave you on my port side" | "I intend to hold course and speed" | "I intend to change course to starboard" | "I request a departure from the Rules" | |
| 1 | 8 | D | A | INLAND ONLY If you were coming up on another power-driven vessel from dead astern and desired to overtake on the other vessel's starboard side, which whistle signal would you sound? | One short blast | One prolonged blast | Two short blasts | Two prolonged blasts | |
| 1 | 9 | D | B | INLAND ONLY Which statement is TRUE concerning narrow channels? | You should keep to that side of the channel which is on your port side. | You should avoid anchoring in a narrow channel. | A vessel having a following current will propose the manner of passage in any case where two vessels are meeting. | All of the above | |
| 1 | 10 | D | D | INLAND ONLY Which term is NOT defined in the Inland Navigation Rules? | Seaplane | Restricted visibility | Underway | Vessel constrained by her draft | |
| 1 | 11 | D | C | INLAND ONLY When you are overtaking another vessel and desire to pass on her left or port hand, you should sound _________________. | one short blast | one long blast | two short blasts | two prolonged blasts | |
| 1 | 12 | D | D | INLAND ONLY Your vessel is meeting another vessel head-on. To comply with the steering and sailing rules, you should _____. | sound the danger signal | sound one prolonged and two short blasts | exchange two short blasts | exchange one short blast | |
| 1 | 13 | D | C | INLAND ONLY Yellow lights are NOT used to identify ________. | U.S. submarines | vessels pushing ahead | law enforcement vessels | dredge pipelines on trestles | |
| 1 | 14 | D | C | INLAND ONLY You have made your vessel up to a tow and are moving from a pier out into the main channel. Your engines are turning ahead. What whistle signal should you sound? | One prolonged and two short blasts | Three long blasts | One prolonged blast | Five or more short rapid blasts | |
| 1 | 15 | D | C | INLAND ONLY Under the Inland Navigation Rules, what is the meaning of the two short blasts signal used when meeting another vessel? | "I am turning to starboard." | "I am turning to port." | "I intend to leave you on my starboard side." | "I intend to leave you on my port side." | |
| 1 | 16 | D | D | INLAND ONLY For the purpose of the Inland Navigation Rules, the term "Inland Waters" includes ___________________. | the Western Rivers | the Great Lakes on the United States side of the International Boundary | harbors and rivers shoreward of the COLREGS demarcation lines | All of the above | |
| 1 | 17 | D | D | INLAND ONLY A power-driven vessel crossing a river on the Western Rivers has the right of way over ____________________. | vessels ascending the river | vessels descending the river | all vessels ascending and descending the river | None of the above | |
| 1 | 18 | D | C | INLAND ONLY Which lights are required for a barge, not part of a composite unit, being pushed ahead? | Sidelights and a sternlight | Sidelights, a special flashing light, and a sternlight | Sidelights and a special flashing light | Sidelights, a towing light, and a sternlight | |
| 1 | 19 | D | D | INLAND ONLY A power-driven vessel operating in a narrow channel with a following current on the Great Lakes or Western Rivers is meeting an upbound vessel. Which statement is TRUE? | The downbound vessel has the right-of-way. | The downbound vessel must initiate the required maneuvering signals. | The downbound vessel must propose the manner and place of passage. | All of the above | |
| 1 | 20 | D | B | INLAND ONLY Your vessel is proceeding down a channel, and can safely navigate only within the channel. Another vessel is crossing your bow from port to starboard, and you are in doubt as to her intentions. Which statement is TRUE? | The sounding of the danger signal is optional. | The sounding of the danger signal is mandatory. | You should sound two short blasts. | You should sound one prolonged and two short blasts. | |
| 1 | 21 | D | D | INLAND ONLY The stand-on vessel in a crossing situation sounds one short blast of the whistle. This means that the vessel _____. | intends to hold course and speed | is changing course to starboard | is changing course to port | intends to leave the other on her port side | |
| 1 | 22 | D | D | INLAND ONLY You are crossing the course of another vessel which is to your starboard. You have reached an agreement by radiotelephone to pass astern of the other vessel. You MUST _________________. | sound one short blast | sound two short blasts | change course to starboard | None of the above | |
| 1 | 23 | D | C | INLAND ONLY Passing signals shall be sounded on inland waters by ________________________. | all vessels upon sighting another vessel rounding a bend in the channel | towing vessel when meeting another towing vessel on a clear day with a 0.6 mile CPA (Closest Point of Approach) | a power-driven vessel when crossing less than half a mile ahead of another power-driven vessel | All of the above | |
| 1 | 24 | D | B | BOTH INTERNATIONAL & INLAND Which of the dayshapes shown would you show on the after end of an inconspicuouspartially submerged vessel or object being towed less than200 meters in length? | A | B | C | No dayshape would be shown. | See illustration number(s): DIAGRAM 16 |
| 1 | 25 | D | A | INLAND ONLY In a narrow channel, a power-driven vessel desiring to overtake another power-driven vessel on the other vessel's starboard side will sound a whistle signal of __________. | one short blast | two short blasts | two prolonged blasts followed by one short blast | two prolonged blasts followed by two short blasts | |
| 1 | 26 | D | B | INLAND ONLY A law enforcement boat may display a __________. | blue flag | flashing blue light | flashing red light | flashing amber light | |
| 1 | 27 | D | B | INLAND ONLY Your vessel is meeting another vessel head-on. To comply with the rules you should exchange _____. | one short blast, alter course to port, and pass starboard to starboard | one short blast, alter course to starboard, and pass port to port | two short blasts, alter course to port, and pass starboard to starboard | two short blasts, alter course to starboard, and pass port to port | |
| 1 | 28 | D | B | INLAND ONLY A vessel overtaking another in a narrow channel, and wishing to pass on the other vessel's port side, would sound a whistle signal of _________________. | one short blast | two short blasts | two prolonged blasts followed by one short blast | two prolonged blasts followed by two short blasts | |
| 1 | 29 | D | C | INLAND ONLY A fleet of moored barges extends into a navigable channel. What is the color of the lights on the barges? | Red | Amber | White | None of the above | |
| 1 | 30 | D | C | INLAND ONLY Which signal must a power-driven vessel give, in addition to one prolonged blast, when backing out of a berth with another vessel in sight? | 2 short blasts | 1 blast | 3 short blasts | 4 blasts | |
| 1 | 31 | D | D | INLAND ONLY At night, a light signal consisting of two flashes by a vessel indicates ____. | an intention to communicate over radiotelephone | that the vessel is in distress | an intention to leave another vessel to port | an intention to leave another vessel to starboard | |
| 1 | 32 | D | B | INLAND ONLY You are overtaking a power-driven vessel in a narrow channel and wish to leave her on your starboard side. You may _____________________. | proceed to overtake her without sounding whistle signals | attempt to contact her on the radiotelephone to arrange for the passage | sound four short blasts | Any of the above | |
| 1 | 33 | D | A | INLAND ONLY For the purpose of the Inland Navigation Rules, the term "inland waters" includes _____________________. | the Great Lakes on the United States side of the International Boundary | the water surrounding any islands of the United States | the coastline of the United States, out to one mile offshore | any lakes within state boundaries | |
| 1 | 34 | D | A | INLAND ONLY A barge more than 50 meters long is required to show how many white anchor lights when anchored in a Secretary of Transportation approved "special anchorage area"? | 2 | 1 | 3 | 4 | |
| 1 | 35 | D | C | INLAND ONLY You are on vessel "B" and vessel "A" desires to overtake you on your starboard side as shown in DIAGRAM 9. After the vessels have exchanged one blast signals, you should ___________________. | alter course to the left | slow your vessel until vessel "A" has passed | hold course and speed | alter course to the left or right to give vessel "A" more sea room | |
| 1 | 36 | D | D | INLAND ONLY Which type of vessel is NOT mentioned in the Inland Navigation Rules? | An inconspicuous, partly submerged vessel | A seaplane | An air-cushion vessel | A vessel constrained by her draft | |
| 1 | 37 | D | A | INLAND ONLY You are operating a vessel through a narrow channel and your vessel must stay within the channel to be navigated safely. Another vessel is crossing your course from starboard to port, and you are in doubt as to her intentions. You _______________________. | must sound the danger signal | are required to back down | may sound the danger signal | should sound one short blast to show that you are holding course and speed | |
| 1 | 38 | D | C | INLAND ONLY Your vessel is meeting another vessel head-on. To comply with the rules, you should exchange ______. | one short blast, alter course to the left, and pass starboard to starboard | two short blasts, alter course to the left, and pass starboard to starboard | one short blast, alter course to the right, and pass port to port | two short blasts, alter course to the right, and pass port to port | |
| 1 | 39 | D | D | INLAND ONLY Which indicates the presence of a partly submerged object being towed? | A diamond shape on the towed object | An all-round light at each end of the towed object | A searchlight beamed from the towing vessel in the direction of the tow | All of the above | |
| 1 | 40 | D | C | INLAND ONLY The light used to signal passing intentions is a(n) _____. | all-round white light ONLY | all-round yellow light ONLY | all-round white or yellow light | light of any color | |
| 1 | 41 | D | B | INLAND ONLY Two vessels in a crossing situation have reached agreement by radiotelephone as to the intentions of the other. In this situation, whistle signals are __________. | required | not required, but may be sounded | required if crossing within half a mile | required when crossing within one mile | |
| 1 | 42 | D | A | INLAND ONLY You are underway in a narrow channel, and are being overtaken by another power-driven vessel. The overtaking vessel sounds the signal indicating his intention to pass you on your starboard side. You signal your agreement by sounding _______________________. | one short blast | two prolonged blasts | two prolonged followed by two short blasts | one prolonged, one short, one prolonged, and one short blast in that order | |
| 1 | 43 | D | B | INLAND ONLY You are meeting another vessel head-on and sound one short blast as a passing signal. The other vessel answers with two short blasts. What should be your next action? | Pass on the other vessel's starboard side. | Sound the danger signal. | Pass astern of the other vessel. | Hold your course and speed. | |
| 1 | 44 | D | B | INLAND ONLY What lights are required for a barge being pushed ahead, not being part of a composite unit? | Sidelights and a sternlight | Sidelights and a special flashing light | Sidelights, a towing light, and a sternlight | Sidelights, a special flashing light, and a sternlight | |
| 1 | 45 | D | B | INLAND ONLY You are overtaking another power-driven vessel in a narrow channel, and you wish to overtake on the other vessel's port side. You will sound a whistle signal of _______. | one short blast | two short blasts | two prolonged blasts followed by one short blast | two prolonged blasts followed by two short blasts | |
| 1 | 46 | D | A | INLAND ONLY At night, a barge moored in a slip used primarily for mooring purposes shall ___________________. | not be required to be lighted | show a white light at each corner | show a red light at the bow and stern | show a flashing yellow light at each corner | |
| 1 | 47 | D | A | INLAND ONLY A flashing blue light is used to identify _____________________. | law enforcement vessels | U.S. submarines | air-cushion vessels in the nondisplacement mode | dredge pipelines on trestles | |
| 1 | 48 | D | A | INLAND ONLY Which statement is TRUE concerning the fog signal of a vessel 15 meters in length anchored in a "special anchorage area" approved by the Secretary of Transportation? | The vessel is not required to sound a fog signal. | The vessel shall ring a bell for 5 seconds every minute. | The vessel shall sound one blast of the foghorn every 2 minutes. | The vessel shall sound three blasts on the whistle every 2 minutes. | |
| 1 | 49 | D | C | INLAND ONLY A power-driven vessel, when leaving a dock or berth, is required to sound _____. | four short blasts | one long blast | one prolonged blast | No signal is required. | |
| 1 | 50 | D | C | INLAND ONLY Vessels "A" and "B" are meeting on a river as shown in DIAGRAM 29, and will pass about 1/4 mile apart. Which statement is TRUE? | Both vessels should continue on course and pass without sounding any whistle signals. | The vessels should exchange two blast whistle signals and pass port to port. | The vessels should exchange two blast whistle signals and pass starboard to starboard. | The vessels should pass port to port and must sound whistle signals only if either vessel changes course. | |
| 1 | 51 | D | A | INLAND ONLY Which statement is TRUE concerning the Inland Navigation Rules? | They list requirements for Traffic Separation Schemes. | They define moderate speed. | They require communication by radiotelephone to reach a passing agreement. | All of the above | |
| 1 | 52 | D | A | INLAND ONLY Whistle signals shall be exchanged by vessels in sight of one another when _____. | they are passing within half a mile of each other | passing agreements have been made by radio | course changes are necessary to pass | doubt exists as to which side the vessels will pass on | |
| 1 | 53 | D | C | INLAND ONLY You are on vessel "A" and vessel "B" desires to overtake you on the starboard side as shown in DIAGRAM 38. After the vessels have exchanged one blast signals you should _____. | alter course to the left | slow your vessel until vessel "B" has passed | hold course and speed | alter course to the left or right to give vessel "B" more sea room | |
| 1 | 54 | D | B | INLAND ONLY A barge more than 50 meters long would be required to show how many white anchor lights when anchored in a Secretary of Transportation approved "special anchorage area"? | 1 | 2 | 3 | 4 | |
| 1 | 55 | D | B | INLAND ONLY The lights illustrated in DIAGRAM 75 are those of a _________________. | pipeline | vessel towing by pushing ahead | vessel being towed astern | vessel underway and dredging | |
| 1 | 56 | D | C | INLAND ONLY Your vessel must remain in a narrow channel for safe operation. Another vessel is crossing the channel from your starboard. You do not think she will pass safely. You MUST ____________. | stop your vessel, since the other vessel has the right of way | sound one short blast of the whistle, and turn to starboard | sound the danger signal | stop your engines, and you may sound the danger signal | |
| 1 | 57 | D | A | INLAND ONLY While underway during the day you sight a small motorboat showing a flashing blue light. The blue light indicates a __________________. | law enforcement boat | boat involved in a race | Coast Guard Auxiliary Vessel on regatta patrol | rescue boat | |
| 1 | 58 | D | D | INLAND ONLY While underway, you sight the lights illustrated in DIAGRAM 81, with the yellow lights flashing. You should _____________________. | wait until the vessel ahead crosses your bow | stop until the red lights turn green | proceed leaving all the lights on your starboard side | pass between the two sets of vertical red lights | |
| 1 | 59 | D | A | INLAND ONLY When power-driven vessels are in a crossing situation, one short blast by either vessel would mean ____. | "I intend to leave you on my port side" | "I intend to hold course and speed" | "I intend to change course to starboard" | "I request a departure from the rules" | |
| 1 | 60 | D | C | INLAND ONLY Two vessels are meeting on a clear day and will pass less than half a mile apart. In this situation whistle signals ___________________. | must be exchanged | may be exchanged | must be exchanged if passing agreements have not been made by radio | must be exchanged only if course changes are necessary by either vessel | |
| 1 | 61 | D | A | INLAND ONLY Your power-driven vessel is overtaking another power-driven vessel in a narrow channel. You wish to overtake her on her starboard side. You should sound a whistle signal of _____. | one short blast | two prolonged blasts followed by one short blast | one prolonged and one short blast | at least five short blasts | |
| 1 | 62 | D | A | INLAND ONLY Which is TRUE of a vessel downbound with a following current when meeting an upbound vessel on the Western Rivers? | She has the right-of-way only if she is a power-driven vessel. | She has the right-of-way only if she has a tow. | She does not have the right-of-way, since the other vessel is not crossing the river. | She must wait for a whistle signal from the upbound vessel. | |
| 1 | 63 | D | B | INLAND ONLY A vessel of less than 20 meters in length at anchor at night in a "special anchorage area designated by the Secretary" _____. | must show one white light | need not show any lights | must show two white lights | need show a light only on the approach of another vessel | |
| 1 | 64 | D | A | INLAND ONLY At night, which lights are required on barges moored in group formation at a bank of a river? | A white light placed at the corners farthest from the bank on each of the upstream and downstream ends of the group. | A white light placed at the corners farthest from the bank of each barge in the group. | A flashing yellow light placed at each of the upstream and downstream ends of the group. | Two red lights in a vertical line placed at the corners farthest from the bank on each of the upstream and downstream ends of the group. | |
| 1 | 65 | D | B | INLAND ONLY A power-driven vessel intends to overtake another power-driven vessel on the overtaken vessel's port side. Which whistle signal should be sounded in order to state this intention? | 1 short blast | 2 short blasts | 2 prolonged and 1 short blasts | 2 prolonged and 2 short blasts | |
| 1 | 66 | D | B | INLAND ONLY A towing vessel pushing ahead on the Western Rivers above the Huey P. Long bridge must show _________. | sidelights only | sidelights and towing lights | sidelights, towing lights, and two masthead lights | sidelights, towing lights, and three masthead lights | |
| 1 | 67 | D | C | INLAND ONLY A power-driven vessel, when leaving a dock or berth, is required to sound _____________________. | two short blasts | one long blast | one prolonged blast | the danger signal | |
| 1 | 68 | D | D | INLAND ONLY Which is CORRECT regarding a "special flashing light?" | It must be yellow in color. | It must be placed as far forward as possible. | It must not show through an arc of more than 225°. | All of the above | |
| 1 | 69 | D | A | INLAND ONLY For the purpose of the Inland Navigation Rules, the term "Inland Waters" includes _________________. | the Western Rivers, extending to the COLREGS demarcation line | harbors and rivers to the outermost aids to navigation | waters along the coast of the United States to a distance of two miles offshore | None of the above | |
| 1 | 70 | D | A | INLAND ONLY Vessels "A" and "B" are meeting in a narrow channel as shown in DIAGRAM 29. Which statement is TRUE concerning whistle signals between the vessels? | Both vessels should sound two short blasts. | Both vessels should sound one short blast. | Vessel "A" should sound one short blast and vessel "B" should sound two short blasts. | Neither vessel should sound any signal as no course change is necessary. | |
| 1 | 71 | D | D | INLAND ONLY Which is TRUE of a power-driven vessel, bound downstream, when meeting an upbound vessel on the Western Rivers? | She has the right-of-way. | She shall propose the manner of passage. | She shall initiate maneuvering signals. | All of the above | |
| 1 | 72 | D | C | INLAND ONLY You are approaching a vessel showing the lights shown in DIAGRAM 75. This is a(n) ___________________. | meeting head-on situation | crossing situation | overtaking situation | special circumstance situation | |
| 1 | 73 | D | D | INLAND ONLY You are overtaking a power-driven vessel in a narrow channel and wish to leave her on your starboard side. You may ________________________. | sound one short blast | sound four short blasts | overtake her without sounding whistle signals | attempt to contact her on the radiotelephone to arrange for the passage | |
| 1 | 74 | D | B | INLAND ONLY Which term is NOT used in the Inland Navigation Rules? | A vessel engaged in mineclearing operations | A vessel constrained by her draft | A vessel towing | A vessel engaged in fishing | |
| 1 | 75 | D | C | INLAND ONLY You are on vessel "A", and vessel "B" desires to overtake you on your starboard side as shown in DIAGRAM 31. After the vessels have exchanged one blast signals, you should _______________________. | alter course to the left | slow your vessel until vessel "B" has passed | hold course and speed | alter course to the left to give vessel "B" more sea room | |
| 1 | 76 | D | A | INLAND ONLY A special flashing light is used on a vessel(s) ___________________. | being pushed ahead | at anchor in a fairway | towed astern | All of the above | |
| 1 | 77 | D | B | INLAND ONLY Vessels "A" and "B" are meeting on a river as shown in DIAGRAM 41, and will pass about 1/4 mile apart. What action should the vessels take? | Both vessels should continue on course and pass without sounding any whistle signals. | The vessels should exchange two blast whistle signals and pass starboard to starboard. | The vessels should exchange one blast whistle signals and pass starboard to starboard. | The vessels should pass starboard to starboard and must sound whistle signals only if either vessel changes course. | |
| 1 | 78 | D | D | INLAND ONLY Under the Inland Navigation Rules, what is the meaning of a one short blast signal used when meeting another vessel? | "I am turning to starboard." | "I am turning to port." | "I intend to leave you on my starboard side." | "I intend to leave you on my port side." | |
| 1 | 79 | D | C | INLAND ONLY On the Western Rivers, a power-driven vessel crossing a river must _________________. | maintain course and speed as you have the right of way over all vessels | keep out of the way of any vessel descending the river | keep out of the way of a power-driven vessel ascending or descending the river | keep out of the way of all vessels ascending or descending the river | |
| 1 | 80 | D | C | INLAND ONLY While underway at night, you see two yellow lights displayed in a vertical line. This should indicate to you a(n) _______________________. | opening in a pipeline | vessel broken down | vessel pushing ahead | vessel fishing | |
| 1 | 81 | D | B | INLAND ONLY When two power-driven vessels are meeting on the Great Lakes, Western Rivers, or waters specified by the Secretary, where there is a current, which vessel shall sound the first passing signal? | The vessel going upstream stemming the current | The vessel downbound with a following current | The vessel that is towing regardless of the current | Either vessel | |
| 1 | 82 | D | B | INLAND ONLY A vessel leaving a dock or berth must sound a prolonged blast of the whistle only if ____________________. | other vessels can be seen approaching | she is a power-driven vessel | visibility is restricted | her engines are going astern | |
| 1 | 83 | D | C | INLAND ONLY If your tug is pushing a barge ahead at night, which light(s) should show aft on your vessel? | A white sternlight | Two red lights | Two towing lights | A towing light over the sternlight | |
| 1 | 84 | D | D | INLAND ONLY You are in charge of a power-driven vessel crossing a river on the Western Rivers. You must keep out of the way of a _____________. | sail vessel descending the river | power-driven vessel ascending the river | sail vessel ascending the river | All of the above | |
| 1 | 85 | D | D | INLAND ONLY A power-driven vessel crossing a river on the Great Lakes or Western Rivers, must keep out of the way of a power-driven vessel _________________________. | descending the river with a tow | ascending the river with a tow | ascending the river without a tow | All of the above | |
| 1 | 86 | D | C | INLAND ONLY What is the whistle signal used to indicate a power-driven vessel leaving a dock? | One short blast | Three short blasts | One prolonged blast | Three prolonged blasts | |
| 1 | 87 | D | D | INLAND ONLY Which statement is TRUE concerning the light used for maneuvering signals? | It must be synchronized with the whistle. | It may be white or yellow. | It must be an all-round light. | All of the above | |
| 1 | 88 | D | B | INLAND ONLY Two power-driven vessels are meeting in the situation shown in DIAGRAM 37. One short blast by vessel "A" means _______________________. | "I am altering my course to starboard" | "I intend to leave you on my port side" | "My intention is to hold course and speed" | "I intend to pass on your starboard side" | |
| 1 | 89 | D | B | INLAND ONLY Your vessel must stay within a narrow channel to be navigated safely. Another vessel is crossing your course from starboard to port. You do NOT think she will pass safely. You ______________________________. | may sound the danger signal | must sound the danger signal | should sound one short blast to indicate that you are holding course and speed | are required to back down | |
| 1 | 90 | D | C | INLAND ONLY Two vessels are in a starboard to starboard meeting situation and will pass well clear approximately1/4 mile apart. Which action should each vessel take? | Sound a one blast whistle signal and turn to starboard. | Maintain course and sound no signal. | Sound a two blast whistle signal and maintain course. | Sound a three blast whistle signal and turn to port. | |
| 1 | 91 | D | B | BOTH INTERNATIONAL & INLAND Which of the dayshapes shown would you show on the after end of an inconspicuouspartially submerged vessel or object being towed over 200meters in length? | A | B | C | No dayshape would be shown. | See illustration number(s): DIAGRAM 16 |
| 1 | 92 | D | B | INLAND ONLY A power-driven vessel pushing ahead or towing alongside on the Mississippi River, below the Huey P. Long Bridge, shall carry ______________. | two masthead lights, sidelights and sternlight | two masthead lights, sidelights and two towing lights | sidelights and two towing lights | one masthead light, sidelights and sternlight | |
| 1 | 93 | D | D | INLAND ONLY While underway in a harbor you hear a vessel sound a prolonged blast. This signal indicates that this vessel _____________. | desires to overtake your vessel | is at anchor | is backing her engines | is moving from a dock | |
| 1 | 94 | D | A | INLAND ONLY You are overtaking another power-driven vessel and sound a whistle signal indicating that you intend to pass the vessel along her starboard side. If the other vessel answers your signal with five short and rapid blasts, you should _______. | not overtake the other vessel until both vessels exchange the same passing signal | not overtake the other vessel until she sounds another five short and rapid blast signal | pass the other vessel along her starboard side | sound five short and rapid blasts and pass along her starboard side | |
| 1 | 95 | D | C | INLAND ONLY You are meeting another vessel in inland waters, and she sounds one short blast on the whistle. This means that she _____. | is changing course to starboard | is changing course to port | intends to leave you on her port side | desires to depart from the Rules | |
| 1 | 96 | D | A | INLAND ONLY You are approaching a sharp bend in a river. You have sounded a prolonged blast and it has been answered by a vessel on the other side of the bend. Which statement is TRUE? | Both vessels must exchange passing signals when in sight and passing within one-half mile of each other. | No further whistle signals are necessary. | The vessel downriver must stop her engines and navigate with caution. | Both vessels must immediately sound passing signals whether or not they are in sight of each other. | |
| 1 | 97 | D | D | INLAND ONLY Which statement is TRUE concerning a passing agreement made by radiotelephone? | Such an agreement is prohibited by the Rules. | A vessel which has made such an agreement must also sound whistle signals. | Whistle signals must still be exchanged when passing within half a mile of each other. | If agreement is reached by radiotelephone, whistle signals are optional. | |
| 1 | 98 | D | C | INLAND ONLY You are aboard the stand-on vessel in a crossing situation. You sound a one blast whistle signal. The give-way vessel answers with a two blast whistle signal. You should sound the danger signal and _____. | maintain course and speed as you are the stand-on vessel | come around sharply to port | take precautionary action until a safe passing agreement is made | maneuver around the stern of the other vessel | |
| 1 | 99 | D | C | INLAND ONLY A power-driven vessel when pushing ahead or towing alongside on the Western Rivers (above the Huey P. Long Bridge on the Mississippi River) shall exhibit _______________________. | two masthead lights, sidelights, and sternlight | two masthead lights, sidelights, and two towing lights | sidelights and two towing lights | one masthead light, sidelights, and sternlight | |
| 1 | 100 | D | D | INLAND ONLY Only law enforcement vessels are permitted to show ___________________. | two red lights in a vertical line | a flashing yellow light | an alternately flashing red and yellow light | a flashing blue light | |
| 1 | 101 | D | A | INLAND ONLY You are overtaking another power-driven vessel in a narrow channel. The other vessel will have to move to allow you to pass. You wish to overtake the other vessel on her starboard side. Your first whistle signal should be _______________________. | one short blast | two short blasts | two prolonged blasts followed by one short blast | two prolonged blasts followed by two short blasts | |
| 1 | 102 | D | A | BOTH INTERNATIONAL & INLAND Which of the dayshapes shown must you show when at anchor? | A | B | C | D | See illustration number(s): DIAGRAM 16 |
| 1 | 103 | D | B | INLAND ONLY Which light display would mark the opening in a pipeline where vessels could pass through? | Three red lights in a vertical line on each side of the opening | Two red lights in a vertical line on each side of the opening | Three white lights in a vertical line on each side of the opening | Two white lights in a vertical line on each side of the opening | |
| 1 | 104 | D | A | INLAND ONLY Which light(s) shall be shown at night on a moored barge which reduces the navigable width of any channel to less than 80 meters? | A white light placed on the two corners farthest from the bank | Two yellow lights in a vertical line at the stern | A red light placed on all four corners | A red light placed on the two corners farthest from the bank | |
| 1 | 105 | D | B | INLAND ONLY You are overtaking another power-driven vessel in a narrow channel. The other vessel will have to move to allow you to pass. You wish to overtake the other vessel and leave her on your starboard side. Your FIRST whistle signal should be ______________________. | one short blast | two short blasts | two prolonged blasts followed by one short blast | two prolonged blasts followed by two short blasts | |
| 1 | 106 | D | C | INLAND ONLY You are overtaking another power-driven vessel and sound a whistle signal indicating that you intend to pass the vessel along her starboard side. If the other vessel answers your signal with five short and rapid blasts, you should _______. | pass the other vessel along her starboard side | sound five short and rapid blasts and pass along her starboard side | not overtake the other vessel until both vessels exchange the same passing signal | not overtake the other vessel until she sounds another five short and rapid blast signal | |
| 1 | 107 | D | D | INLAND ONLY A power-driven vessel intends to overtake another power-driven vessel on the overtaken vessel's port side. What whistle signal should be sounded in order to state this intention? | 1 prolonged and 1 short blast | 1 short blast | 2 prolonged and 2 short blasts | 2 short blasts | |
| 1 | 108 | D | D | INLAND ONLY You are overtaking another power-driven vessel in a narrow channel. The other vessel will have to move to allow you to pass. You wish to overtake the other vessel and leave her on your starboard side. Your first whistle signal should be ___________________. | two prolonged blasts followed by one short blast | two prolonged blasts followed by two short blasts | one short blast | two short blasts | |
| 1 | 109 | D | B | INLAND ONLY You are underway on vessel "A" and desire to overtake vessel "B" as shown in DIAGRAM 17. After you sound two short blasts on your whistle, vessel "B" sounds five short rapid blasts on the whistle. You should ____________. | alter course to starboard and pass on the starboard side of "B" | keep sounding passing signals until the same signal is received from vessel "B" | answer the five short blast signal then pass on the port side | pass with caution on the port side of vessel "B" | |
| 1 | 110 | D | B | INLAND ONLY Which statement is TRUE concerning the fog signal of a sailing vessel 25 meters in length anchored in a "special anchorage area" approved by the Secretary of Transportation? | The vessel is not required to sound a fog signal. | The vessel shall ring a bell for 5 seconds every minute. | The vessel shall sound one blast of the whistle every 2 minutes. | The vessel shall sound three blasts on the whistle every 2 minutes. | |
| 1 | 111 | D | A | INLAND ONLY Which light display marks the opening in a pipeline where vessels could pass through? | Two red lights in a vertical line on each side of the opening | Three red lights in a vertical line on each side of the opening | Two yellow lights in a vertical line on each side of the opening | Three white lights in a vertical line on each side of the opening | |
| 1 | 112 | D | C | INLAND ONLY While underway, you sight the lights illustrated in DIAGRAM 81, with the yellow lights flashing. You should ________________. | wait until the vessel ahead crosses your bow | stop until the red lights turn green | pass between the two sets of vertical red lights | proceed, leaving all the lights on your starboard side | |
| 1 | 113 | D | D | INLAND ONLY At night, a barge moored in a slip used primarily for mooring purposes shall _____________________. | show a flashing yellow light at each corner | show a white light at each corner | show a red light at the bow and stern | not be required to be lighted | |
| 1 | 114 | D | C | INLAND ONLY At night, what lights are required on barges moored in a group formation at a river bank? | A flashing yellow light placed at each of the upstream and downstream ends of the group | A white light placed at the corners farthest from the bank of each barge in the group | A white light placed at the corners farthest from the bank on each of the upstream and downstream ends of the group | Two red lights in a vertical line placed at the corners farthest from the bank on each of the upstream and downstream ends of the group | |
| 1 | 115 | D | A | INLAND ONLY What is true of a "special flashing light"? | It may show through an arc of 180°. | It flashes at the rate of 120 flashes per minute. | It is optional below the Baton Rouge Highway Bridge. | All of the above | |
| 1 | 116 | D | C | BOTH INTERNATIONAL & INLAND You are on a 30-meter fishingvessel. Which day shape must you show while engaged infishing? | A | B | C | D | See illustration number(s): DIAGRAM 16 |
| 1 | 117 | D | B | INLAND ONLY Which is a characteristic of a "specialflashing light"? | It is required for all vessels being pushed ahead as part of a composite unit. | It must show through an arc of not less than 180° nor more than 225°. | It must be of the same character and construction as the masthead light. | All of the above | |
| 1 | 118 | D | D | BOTH INTERNATIONAL & INLAND You are on a vessel engaged infishing, other than trawling, and have gear extending morethan 150 meters horizontally from the vessel. Whichdayshape must you show in the direction of theoutlying gear? | A | B | C | D | See illustration number(s): DIAGRAM 16 |
| 1 | 119 | D | C | INLAND ONLY What MAY be used to indicate the presence of a partly submerged object being towed? | A black cone, apex upward | Two all-round yellow lights at each end of the tow | The beam of a search light from the towing vessel shown in the direction of the tow | All of the above | |
| 1 | 120 | D | B | INLAND ONLY What shall be used to indicate the presence of a partly submerged object being towed? | A black cone, apex downward | An all-round white light at each end of the tow | A flare-up light | All of the above | |
| 1 | 122 | D | C | INLAND ONLY A barge more than 50 meters long is required to show how many white anchor lights when anchored in a Secretary of Transportation approved "special anchorage area?" | None | One | Two | One, on the near approach of another vessel | |
| 1 | 123 | D | C | INLAND ONLY What is not contained in the Inland Navigation Rules? | An inconspicuous, partly submerged object | Lights on pipelines | A vessel constrained by her draft | An air-cushion vessel | |
| 1 | 124 | D | B | INLAND ONLY Which term is NOT defined in the Inland Navigation Rules? | Towing light | Vessel constrained by her draft | In sight | Restricted visibility | |
| 1 | 125 | D | D | INLAND ONLY Under the Inland Navigation Rules, the term "Inland Waters" includes ________________. | any waters marked by U.S. aids to navigation | harbors and rivers to the outermost aids to navigation | waters along the coast of the United States to a distance of two miles offshore | the Western Rivers, extending to the COLREGS demarcation line | |
| 1 | 126 | D | B | INLAND ONLY For the purpose of the Inland Navigation Rules, the term "Inland Waters" includes ______________. | the waters surrounding any islands of the U.S. | the Great Lakes on the United States side of the boundary | the coastline of the United States, out to one mile offshore | any lakes within state boundaries | |
| 1 | 127 | D | D | INLAND ONLY You are on board the stand-on vessel in a crossing situation. You sound a one blast whistle signal, and the give-way vessel answers with a two-blast signal. You should then sound the danger signal and _______________. | maintain course and speed | come around sharply to port | maneuver around the stern of the other vessel | stop and back your vessel if necessary until signals are agreed upon | |
| 1 | 128 | D | D | BOTH INTERNATIONAL & INLAND You are on a sailing vessel.While under sail you decide to use your engine to assistin propulsion. Which day signal would you show? | D | C | B | None of these day signals are correct. | See illustration number(s): DIAGRAM 16 |
| 1 | 129 | D | B | INLAND ONLY You are proceeding in a channel in inland waters and are meeting an outbound vessel. Your responsibilities include _____. | keeping to that side of the channel which is on your vessel's port side | exchanging whistle signals if passing within half a mile | stopping your vessel and letting the outbound vessel initiate signals for passing | giving the outbound vessel the right of way | |
| 1 | 130 | D | D | INLAND ONLY Your vessel must stay within a narrow channel to be navigated safely. Another vessel is crossing your course from starboard to port. You do NOT think she will pass safely. You are required to ____________________. | slow to bare steerageway | back down | sound one short blast to indicate that you are holding course and speed | sound the danger signal | |
| 1 | 131 | D | B | INLAND ONLY You are navigating in a narrow channel and must remain in the channel for safe operation. Another vessel is crossing the channel ahead of you from your starboard. You are doubtful of intention of the crossing vessel. You MUST __________________. | stop your vessel, since the other vessel has the right of way | sound the danger signal | contact him on the radiotelephone to make a passing agreement | stop your engines until you have slowed to bare steerageway | |
| 1 | 132 | D | C | INLAND ONLY Which statement is TRUE of a power-driven vessel proceeding downbound with the current, when meeting an upbound vessel on the Western Rivers? | She shall not impede the upbound vessel. | She shall pass on the port side of the other. | She shall propose the manner of passage. | All of the above | |
| 1 | 133 | D | A | INLAND ONLY A power-driven vessel operating in a narrow channel with a following current on the Great Lakes or Western Rivers is meeting an upbound vessel. Which statement is TRUE? | The downbound vessel has the right of way. | The upbound vessel must initiate the required maneuvering signals. | The upbound vessel must propose the manner of passing. | All of the above | |
| 1 | 134 | D | B | INLAND ONLY Which is TRUE of a vessel downbound with a following current when meeting an upbound vessel on the Western Rivers? | Neither vessel has the right-of-way. | She has the right-of-way only if she is power-driven. | She does not have the right-of-way, since the other vessel is not crossing the river. | She must wait for a whistle signal from the upbound vessel. | |
| 1 | 135 | D | C | BOTH INTERNATIONAL & INLAND You are on a 30-meter trawler.Which day signal must you show while trawling? | A | B | C | None of these day signals are correct. | See illustration number(s): DIAGRAM 16 |
| 1 | 136 | D | D | INLAND ONLY Yellow lights are NOT used to identify _______. | a dredge pipeline on a trestle | the heads of tows being pushed ahead by tugboats | purse seiners | a seaplane on the water | |
| 1 | 137 | D | C | INLAND ONLY A vessel displaying an alternating red and yellow light is __________. | in distress | enforcing the law | engaged in public safety activities | restricted in its ability to maneuver | |
| 1 | 138 | D | B | INLAND ONLY A law enforcement vessel patrolling a marine regatta may show either a flashing blue light or ________. | two amber lights in a horizontal line | an alternately flashing red and yellow light | a high intensity flashing white light (strobe) | a fixed green light over a red flashing light | |
| 1 | 139 | D | B | INTERNATIONAL ONLY Which dayshape must you show on theforward end of an inconspicuous partially submergedvessel or object being towed more than 200 meters in length? | A | B | D | No dayshape must be shown. | See illustration number(s): DIAGRAM 16 |
| 1 | 140 | D | A | INLAND ONLY You are the stand-on vessel in a crossing situation. The other vessel is showing an alternating red and yellow light. Which action should you take? | Stand on. | Heave to. | Alter course to assist. | Yield the right-of-way. | |
| 1 | 141 | D | C | INLAND ONLY You are the stand-on vessel in an overtaking situation. The other vessel is showing an alternately flashing red-and-yellow light. What action should you take? | Alter course to assist | Give-way | Stand on | Heave to | |
| 1 | 142 | D | B | INLAND ONLY The special light for a vessel engaged in public safety activities must _____. | be on top of the mast or highest structure of the vessel | not interfere with the visibility of the navigation lights | be as far forward as possible | not be visible more than 22 1/2 degrees abaft the beam | |
| 1 | 143 | D | C | INLAND ONLY A light used to signal passing intentions must be an __________. | alternating red and yellow light | alternating white and yellow light | all-round white or yellow light | all-round white light only | |
| 1 | 144 | D | D | INLAND ONLY A light used to signal passing intentions must be an _______________________. | all-round yellow light only | all-round white light only | alternating red and yellow light | all-round white or yellow light | |
| 1 | 145 | D | A | INLAND ONLY A light used to signal passing intentions must be a(n) _____________________. | all-round white or yellow light | all-round yellow light only | all-round white light only | 225‚ white light only | |
| 1 | 146 | D | C | INLAND ONLY What characteristic must a light have if used to signal passing intentions? | It must be an all-round white light. | It must be an alternating blue and white light. | It must be either an all-round white or an all-round yellow light. | It must be an alternating red and yellow light. | |
| 1 | 147 | D | D | INLAND ONLY What characteristic must a light used to indicate passing intentions have? | It must be an alternating red and yellow light. | It must be an all-round white light. | It must be an all-round yellow light. | It must be either an all-round white or an all-round yellow light. | |
| 1 | 148 | D | C | INLAND ONLY In a narrow channel, you are underway on vessel "A" and desire to overtake vessel "B". After you sound two short blasts on your whistle, vessel "B" sounds five short and rapid blasts on the whistle. You should _______. | pass with caution on the port side of vessel "B" | wait for the other vessel to initiate a signal | initiate another signal after the situation has stabilized | immediately answer with the danger signal, and then sound one short blast | |
| 1 | 149 | D | C | INLAND ONLY A power-driven vessel pushing ahead or towing alongside on the Mississippi River, above the Huey P. Long Bridge, shall carry _________. | two masthead lights, sidelights, and sternlight | two masthead lights, sidelights, and two towing lights | sidelights and two towing lights | one masthead light, sidelights, and sternlight | |
| 1 | 150 | D | C | INLAND ONLY A power-driven vessel, when leaving a dock or berth, must sound what signal? | Three short blasts | A long blast | A prolonged blast | No signal is required. | |
| 1 | 151 | D | C | BOTH INTERNATIONAL & INLAND Which vessel is indicated bythe day signal shown? | A dredge indicating the side with the obstruction | A fishing vessel with gear extending more than 150 meters horizontally | A tug with a tow exceeding 200 meters which limits her ability to maneuver | A vessel engaged in underwater operations with a diver down | See illustration number(s): DIAGRAM 22 |
| 1 | 152 | D | D | BOTH INTERNATIONAL & INLAND The vessel showing the daysignal is ____________________. | A vessel engaged in mine clearance operations | A fishing vessel with gear extending more than 150 meters horizontally | A trawler shooting nets in the direction indicated | A tug with a tow exceeding 200 meters unable to deviate from course | See illustration number(s): DIAGRAM 22 |
| 1 | 153 | D | C | BOTH INTERNATIONAL & INLAND You are underway at night andyou sight the lights shown. You know these lights indicatea _______________________________. | fishing vessel engaged in fishing | trawler dragging nets | sailing vessel | dredge at work | See illustration number(s): DIAGRAM 47 |
| 1 | 154 | D | A | BOTH INTERNATIONAL & INLAND You are underway at night andyou sight the lights shown. You know these lights indicatea ________________________. | sailing vessel | trawler dragging nets | vessel engaged in mine clearance | dredge at work | See illustration number(s): DIAGRAM 47 |
| 1 | 155 | D | A | BOTH INTERNATIONAL & INLAND You are underway at night and you sight the lights shown. You know these lights indicatea(n) _________________________ | sailing vessel | air cushion vessel operating in the non-displacement mode | submarine operating on the surface | vessel pushing a barge ahead | See illustration number(s): DIAGRAM 47 |
| 1 | 156 | D | B | BOTH INTERNATIONAL & INLAND You are underway at night and you sight the lights shown. You know these lights indicatea(n) _________________________ | vessel towing astern | sailing vessel | submarine operating on the surface | vessel pushing a barge ahead | See illustration number(s): DIAGRAM 47 |
| 1 | 157 | D | C | BOTH INTERNATIONAL & INLAND The lights shown are exhibitedby a vessel __________________________. | restricted in her ability to maneuver | engaged in fishing | not under command | on pilotage duty | See illustration number(s): DIAGRAM 49 |
| 1 | 158 | D | B | BOTH INTERNATIONAL & INLAND The lights shown are exhibitedby a vessel __________________________. | dredging while underway | not under command | engaged in trawling | engaged in mineclearance | See illustration number(s): DIAGRAM 49 |
| 1 | 159 | D | D | BOTH INTERNATIONAL & INLAND The lights shown are exhibitedby a vessel __________________________. | submarine on the surface | air-cushion vessel in the non-displacement mode | vessel engaged in trawling | vessel not under command | See illustration number(s): DIAGRAM 49 |
| 1 | 160 | D | A | BOTH INTERNATIONAL & INLAND The lights shown are exhibitedby a vessel __________________________. | vessel not under command | air-cushion vessel in the non-displacement mode | vessel engaged in fishing | vessel engaged in underwater operations | See illustration number(s): DIAGRAM 49 |
| 1 | 161 | D | A | BOTH INTERNATIONAL & INLAND You are on a vessel heading duesouth and see the lights shown one point on the port bow.This vessel could be heading ____________________. | NW | SW | NE | SE | See illustration number(s): DIAGRAM 51 |
| 1 | 162 | D | B | BOTH INTERNATIONAL & INLAND You are on a vessel heading duesouth and see the lights shown one point on the port bow.This vessel could be heading ____________________. | SW | NW | NE | SE | See illustration number(s): DIAGRAM 51 |
| 1 | 163 | D | D | INLAND ONLY A commercial vessel engaged in public safety activities may display a(n) _________________. | flashing yellow light | flashing blue light | alternately flashing blue and red light | alternately flashing red and yellow light | |
| 1 | 164 | D | C | BOTH INTERNATIONAL & INLAND You are on a vessel heading duesouth and see the lights shown one point on your port bow.This vessel could be heading ____________________. | SE | NE | NW | SW | See illustration number(s): DIAGRAM 51 |
| 1 | 165 | D | D | BOTH INTERNATIONAL & INLAND You are on a vessel heading duesouth and see the lights shown one point on your port bow.This vessel could be heading ____________________. | SE | NE | SW | NW | See illustration number(s): DIAGRAM 51 |
| 1 | 166 | D | A | BOTH INTERNATIONAL & INLAND You are on a vessel heading duenorth and see the lights shown one point on your port bow.This vessel could be heading ____________________. | SE | NE | SW | NW | See illustration number(s): DIAGRAM 51 |
| 1 | 167 | D | B | BOTH INTERNATIONAL & INLAND You are on a vessel heading duenorth and see the lights shown one point on your port bow.This vessel could be heading ____________________. | NE | SE | SW | NW | See illustration number(s): DIAGRAM 51 |
| 1 | 168 | D | D | BOTH INTERNATIONAL & INLAND You are on a vessel heading duenorth and see the lights shown one point on your port bow.This vessel could be heading ____________________. | NW | SW | NE | SE | See illustration number(s): DIAGRAM 51 |
| 1 | 169 | D | C | BOTH INTERNATIONAL & INLAND You are on a vessel heading duenorth and see the lights shown one point on your port bow.This vessel could be heading ____________________. | NW | SW | SE | NE | See illustration number(s): DIAGRAM 51 |
| 1 | 170 | D | B | BOTH INTERNATIONAL & INLAND You are on a vessel and seeahead the lights shown. They indicate a ________________. | vessel crossing from your starboard | vessel crossing from your port | vessel being overtaken | vessel meeting head-on | See illustration number(s): DIAGRAM 59 |
| 1 | 171 | D | D | BOTH INTERNATIONAL & INLAND You are on a vessel and seeahead the lights shown. They indicate a ________________. | vessel being overtaken | vessel meeting head-on | vessel crossing from your starboard | vessel crossing from your port | See illustration number(s): DIAGRAM 59 |
| 1 | 172 | D | C | BOTH INTERNATIONAL & INLAND You are on watch and sight avessel showing only these lights. They indicate a _______. | sailing vessel | vessel engage in trawling | power-driven vessel | mineclearance vessel | See illustration number(s): DIAGRAM 59 |
| 1 | 173 | D | B | BOTH INTERNATIONAL & INLAND You are on watch and sight avessel showing only these lights. They indicate a _______. | submarine on the surface | power-driven vessel | sailing vessel | vessel enagaged in trawling | See illustration number(s): DIAGRAM 59 |
| 1 | 174 | D | D | BOTH INTERNATIONAL & INLAND You see the display of lightsshown. They could indicate a vessel ________________. | under sail and power | dredging while underway | fishing with nets extending more than 150 meters | power-driven and approaching head-on | See illustration number(s): DIAGRAM 71 |
| 1 | 175 | D | B | BOTH INTERNATIONAL & INLAND You see the display of lightsshown. They indicate a vessel ________________. | trawling | approaching head-on | fishing with nets extending more than 150 meters | dredging | See illustration number(s): DIAGRAM 71 |
| 1 | 176 | D | A | BOTH INTERNATIONAL & INLAND You see the display of lightsshown. This could indicate a ___________________. | 40-meter tug with tow exceeding 200 meters | tug unable to maneuver as required by the Rules | range marking a channel beneath a drawbridge | 60-meter tug pushing a barge ahead | See illustration number(s): DIAGRAM 64 |
| 1 | 177 | D | D | BOTH INTERNATIONAL & INLAND You see the display of lightsshown. This could indicate a ___________________. | 35-meter tug towing more than one barge astern | dredge restricted in its ability to maneuver | 55-meter tug towing astern, length of tow exceeds 200 meters | 65-meter tug towing astern, length of tow 150 meters | See illustration number(s): DIAGRAM 64 |
| 1 | 178 | D | C | BOTH INTERNATIONAL & INLAND Which display of lights shownindicates a 65-meter tug towing a barge astern, lenth of tow120 meters? | A | B | C | D | See illustration number(s): DIAGRAM 72 |
| 1 | 179 | D | B | BOTH INTERNATIONAL & INLAND Which display of lights shownindicates a dredge underway and not dredging? | A | B | C | D | See illustration number(s): DIAGRAM 72 |
| 1 | 180 | D | A | BOTH INTERNATIONAL & INLAND At night, you see the displayof lights shown. They indicate a(n) _________________. | sailing vessel | 8-meter power-driven vessel | vessel not under command | 12-meter fishing vessel | See illustration number(s): DIAGRAM 74 |
| 1 | 181 | D | A | BOTH INTERNATIONAL & INLAND At night, you see the displayof lights shown. They indicate a(n) _______________. | sailing vessel | 8-meter power-driven vessel | vessel not under command | 12-meter fishing vessel | See illustration number(s): DIAGRAM 74 |
| 1 | 182 | D | B | BOTH INTERNATIONAL & INLAND At night, you see the displayof lights shown. They indicate a(n) _______________. | vessel under oars | sailing vessel | law enforcement vessel | air-cushion vessel | See illustration number(s): DIAGRAM 74 |
| 1 | 183 | D | D | BOTH INTERNATIONAL & INLAND Which vessel must show an aftermasthead light, if over 50 meters in length? | A vessel engaged in fishing | A vessel at anchor | A vessel not under command | A vessel trawling | |
| 1 | 184 | D | C | BOTH INTERNATIONAL & INLAND You see the display of lightsshown. This indicates a vessel engaged __________________. | in fishing at anchor | in fishing underway but not making way | in fishing making way | on pilotage duty making way | See illustration number(s): DIAGRAM 54 |
| 1 | 185 | D | D | BOTH INTERNATIONAL & INLAND You see the display of lightsshown. It could be a __________________. | pilot vessel with a motor launch alongside | fishing vessel adrift and fishing with handlines | fishing vessel at anchor | fishing vessel with outlying gear more than 150 meters | See illustration number(s): DIAGRAM 54 |
| 1 | 186 | D | C | BOTH INTERNATIONAL & INLAND You see the display of lightsshown. It could be a __________________. | pilot vessel with a motor launch alongside | fishing vessel adrift and fishing with handlines | fishing vessel making way | dredge making way | See illustration number(s): DIAGRAM 54 |
| 1 | 187 | D | C | BOTH INTERNATIONAL & INLAND You are in charge of a power-driven vessel making way in dense fog. You observe what appears to be another vessel on radar half a mile distant on your port bow and closing. You must _____. | sound the danger signal | exchange passing signals | sound one prolonged blast | sound one short, one prolonged, and one short blast | |
| 1 | 188 | D | A | INTERNATIONAL ONLY Yellow lights are NOT shown by____________________. | towing vessels pushing ahead | air cushion vessels in a nondisplacement mode | purse seiners | U.S. submarines | |
| 1 | 189 | D | B | BOTH INTERNATIONAL & INLAND You are on vessel "A" towing a barge alongside and meeting vessel "B" as shown. Which action should you take? | Alter course to port | Alter course to starboard | Back down to reduce the strain on the lines | Maintain course and speed | See illustration number(s): DIAGRAM 39 |
| 1 | 190 | D | C | INLAND ONLY At night, you see the lights shown. They are shown on a _________________. | barge being pushed ahead | barge being towed astern | tug pushing a barge ahead | tug towing a barge astern | See illustration number(s): DIAGRAM 75 |
| 1 | 191 | D | D | INLAND ONLY At night, you see the lights shown. They are shown on a _______________________. | bow of a barge being pushed ahead | stern of a barge being towed astern | masthead of a tug towing astern | stern of a tug pushing ahead | See illustration number(s): DIAGRAM 75 |
| 1 | 192 | D | C | BOTH INTERNATIONAL & INLAND You are on vessel "B" and meeting vessel "A" towing a barge alongside as shown. Which lights do you see on the tug and tow combined? | One green and one red sidelight on the outside of the unit | One green and one red sidelight and a special flashing yellow light | Two green and two red sidelights marking each vessel | Two green and two red sidelights marking each vessel and a special flashing yellow light | See illustration number(s): DIAGRAM 39 |
| 1 | 193 | D | B | BOTH INTERNATIONAL & INLAND You are on vessel "B" and crossing a narrow channel. Vessel "A", who can only navigate within the channel, is on your port bow and crossing as shown. Which action should you take? | Maintain course and speed as the ship is on your port bow. | Give way to the other vessel. | Increase speed and cross his bow. | Sound the danger signal. | See illustration number(s): DIAGRAM 40 |
| 1 | 194 | D | D | BOTH INTERNATIONAL & INLAND You are on vessel "A" and proceeding down a narrow channel as shown. You can only navigate within the channel and vessel "B" is crossing ahead. Which action should you take? | Back down and allow vessel "B" to cross ahead. | Alter course to starboard to give him more room. | Maintain course and speed. | Sound the danger signal and take evasive action. | See illustration number(s): DIAGRAM 40 |
| 1 | 195 | D | C | BOTH INTERNATIONAL & INLAND At night, you see a vessel with only the lights shown. This would indicate a ___________. | a vessel testricted in her ability to maneuver | fishing vessel underway | pilot vessel underway | vessel not under command | See illustration number(s): DIAGRAM 78 |
| 1 | 197 | D | A | INTERNATIONAL ONLY A partially submerged object towed by a vessel must show during the day one _______________. | diamond shape when the length of the tow is 200 meters or less | diamond shape when the length of the tow exceeds 200 meters in length | black ball | black ball only when the length of the tow exceeds 200 meters in length | |
| 1 | 198 | D | B | INTERNATIONAL ONLY You are on a vessel that cannot comply with the spacing requirement for masthead lights. What is required in this situation? | The vessel must carry only the lights that comply with the rules; the others may be omitted. | The vessel's lights must comply as closely as possible, as determined by her government. | The vessel must be altered to permit full compliance with the rules. | An all-round light should be substituted for the after masthead light and the sternlight. | |
| 1 | 199 | D | B | INLAND ONLY You are on a vessel that the Secretary has determined cannot comply with the spacing requirement for masthead lights. What is required in this situation? | The vessel must carry only the lights that comply with the rules; the others may be omitted. | The vessel's lights must comply as closely as possible. | The vessel must be altered to permit full compliance with the rules. | An all-round light should be substituted for the after masthead light and the sternlight. | |
| 1 | 200 | D | A | INLAND ONLY A partially submerged object towed by a vessel must show during the day one __________. | diamond shape regardless of length of the tow | diamond shape only when the length of the tow exceeds 200 meters in length | black ball | black ball only when the length of the tow exceeds 200 meters in length | |
| 1 | 201 | D | C | INLAND ONLY At night, you see the lights shown. They are shown on a ______________________. | barge being pushed ahead | barge being towed astern | tug pushing a barge ahead | tug towing a barge astern | See illustration number(s): DIAGRAM 75 |
| 1 | 202 | D | C | BOTH INTERNATIONAL & INLAND You are on watch and sight avessel showing only these lights. They indicate a _______. | submarine on the surface | power-driven vessel | sailing vessel | vessel enagaged in trawling | See illustration number(s): DIAGRAM 74 |
| 1 | 203 | D | A | BOTH INTERNATIONAL & INLAND Which vessel must show forward and after masthead lights when making way? | A 75-meter vessel restricted in her ability to maneuver | A 100-meter sailing vessel | A 150-meter vessel engaged in fishing | A 45-meter vessel engaged in towing | |
| 1 | 204 | D | B | INTERNATIONAL ONLY Vessels "A" and "B" are in a crossing situation on the high seas as shown in DIAGRAM 14. Vessel "B" sounds one short blast. What is the proper action for vessel "A" to take? | Answer with one blast and hold course and speed | Hold course and speed | Answer with one blast and keep clear of vessel "B" | Sound danger signal | |
| 1 | 205 | D | C | INTERNATIONAL ONLY Which whistle signal may be sounded by one of two vessels in sight of each other? | Four short blasts | One prolonged blast | One short blast | One short, one prolonged, and one short blast | |
| 1 | 206 | D | A | INTERNATIONAL ONLY What lights are required for a single barge being towed alongside? | Sidelights and a stern light | Sidelights, a special flashing light, and a stern light | Sidelights and a special flashing light | Sidelights, a towing light, and a stern light | |
| 1 | 207 | D | B | INLAND ONLY What lights are required for a single barge being towed alongside? | Sidelights and a stern light | Sidelights, a special flashing light, and a stern light | Sidelights and a special flashing light | Sidelights, a towing light, and a stern light | |
| 1 | 208 | D | B | INTERNATIONAL ONLY A single vessel being towed alongside shall show ______________________. | one all-round white light | sidelights and a stern light | only the outboard sidelight and a stern light | a masthead light, sidelights, and a stern light | |
| 1 | 209 | D | D | INLAND ONLY A single vessel being towed alongside shall show ______________________. | one all-round white light | sidelights and a stern light | only the outboard sidelight and a stern light | a special flashing light, sidelights, and a stern light | |
| 1 | 210 | D | B | INLAND ONLY A single vessel being towed alongside shall exhibit __________________. | one all-round white light | sidelights, stern light and a special flashing light | only the outboard sidelight and a stern light | a masthead light, sidelights, and a stern light | |
| 1 | 211 | D | D | INTERNATIONAL ONLY A single vessel being towed alongside shall exhibit __________________. | one all-round white light | sidelights, stern light and a special flashing light | only the outboard sidelight and a stern light | sidelights and a stern light | |
| 1 | 216 | D | B | INLAND ONLY Signals shall be sounded by a power-driven vessel intending to overtake _____. | any vessel when within half a mile of that vessel | another power-driven vessel when both power-driven vessels are in sight of one another | any vessel when both are in sight of one another | another power-driven vessel only when within half a mile of that power-driven vessel | |
| 1 | 217 | D | C | INTERNATIONAL ONLY You see the lights shown.This is a __________________. | pilot vessel with a launch alongside | vessel towing astern and her tow | vessel towing a barge alongside | vessel pushing a barge ahead | See illustration number(s): DIAGRAM 66 |
| 1 | 218 | D | B | INLAND ONLY Your tug is pushing a barge ahead atnight. What light(s) should show aft on your vessel? | The light(s) in Diagram 60. | The light(s) in Diagram 75. | The light(s) in Diagram 46. | The light(s) in Diagram 70. | |
| 1 | 219 | D | C | INLAND ONLY You are proceeding up a channel in ChesapeakeBay and are meeting an outbound vessel. There is nocurrent. You MUST _______________. | keep to that side of the channel which is on your vessel's port side | stop your vessel, letting the outbound vessel sound the signals for meeting and passing | propose or answer one- or two-blast whistle signals given by the other vessel if passing within 1/2 mile | give the outbound vessel the right-of-way | |
| 1 | 220 | D | C | INLAND ONLY Your vessel is meeting another vessel head-on. To comply with the rules, you should exchange ______. | one short blast, alter course to the left, and pass starboard to starboard | two short blasts, alter course to the left, and pass starboard to starboard | one short blast, alter course to the right, and pass port to port | two short blasts, alter course to the right, and pass port to port | |
| 1 | 221 | D | C | INLAND ONLY A barge more than 50 meters long would be required to show how many white anchor lights when anchored in a Secretary of Transportation approved "special anchorage area"? | 4 | 3 | 2 | 1 | |
| 1 | 222 | D | D | INLAND ONLY A barge more than 50 meters long, at anchor ina "special anchorage area designated by the Secretary",is required to show how many white anchor lights? | 1 | 3 | 4 | 2 | |
| 1 | 223 | D | A | INLAND ONLY A barge more than 50 meters long, at anchor ina "special anchorage area designated by the Secretary",is required to show how many white anchor lights? | Two | One | One, on the near approach of another vessel | None | |
| 1 | 224 | D | B | INLAND ONLY A barge more than 50 meters long, at anchor ina "special anchorage area designated by the Secretary",is required to show how many white anchor lights? | None | Two | One | One, on the near approach of another vessel | |
| 1 | 225 | D | D | INLAND ONLY A barge more than 50 meters long, at anchor in a"special anchorage area designated by the Secretary", isrequired to show how many white anchor lights? | One | None | One, on the near approach of another vessel | Two | |
| 1 | 226 | D | D | INLAND ONLY While underway and in sight of another vessela mile ahead you put your engines on astern propulsion. Which statement concerning whistle signals is TRUE? | You must sound three short blasts on the whistle. | You must sound one blast if backing to starboard. | You must sound whistle signals only if the vessels are meeting. | You need not sound any whistle signals. | |
| 1 | 227 | D | A | INLAND ONLY A commercial vessel engaged in public safety activities may display a(n) _______________. | alternately flashing red and yellow light | flashing blue light | flashing yellow light | alternately flashing blue and red light | |
| 1 | 228 | D | B | INLAND ONLY A vessel engaged in public safety activitiesmaydisplay an alternately flashing red and yellow light. Thisspecial light may be used by a vessel engaged in__________. | law enforcement | patrolling a regatta | hauling in pairs | river bank protection | |
| 1 | 259 | D | A | BOTH INTERNATIONAL & INLAND Barges being towed at nightmust exhibit navigation lights _______________. | at all times | only if manned | only if towed astern | Need not be lighted | |
| 1 | 260 | D | A | INLAND ONLY A vessel engaged in public safety activities maydisplay an alternately flashing red and yellow light. Thisspecial light may be used by a vessel engaged in __________. | search and rescue | restricted in ability to maneuver | not under command | river bank protection | |
| 1 | 261 | D | D | INLAND ONLY While underway and in sight of another vesselmore than .5 mile away, you put your engines full speedastern. Which statement concerning whistle signals is TRUE? | You must sound three short blasts on the whistle. | You must sound one blast if backing to starboard. | You must sound whistle signals only if the vessels are meeting. | You need not sound any whistle signals. | |
| 1 | 262 | D | A | INLAND ONLY When power-driven vessels are in sight of one another, passing signals shall be sounded when _____. | meeting or crossing within half a mile of each other | meeting within one mile of each other | meeting or crossing at any distance | crossing within one mile of each other | |
| 1 | 263 | D | C | From your 0100 position, you change course to 258° perstandard magnetic compass. Your engine speed is 10.0knots. A short time later, your fathometer reads 51 feet(15.5 meters) under the keel. What is the water depth? | 42.5 feet (12.9 meters) | 51.0 feet (15.5 meters) | 59.5 feet (18.0 meters) | 60.4 feet (18.4 meters) | |
| 1 | 352 | D | B | INLAND ONLY A commercial vessel engaged in public safety activities may display a(n) _________________. | flashing blue light | alternately flashing red and yellow light | flashing yellow light | alternately flashing blue and red light | |
| 1 | 727 | D | C | INLAND ONLY Maneuvering signals shall be sounded oninland waters by _____. | all vessels when meeting, crossing, or overtaking and in sight of one another | all vessels meeting or crossing at a distance within half a mile of each other and not in sight of one another | power-driven vessels overtaking and in sight of one another | power-driven vessels crossing at a distance within half a mile of each other and NOT in sight of one another | |
| 1 | 728 | D | C | INLAND ONLY A vessel engaged in public safety activities maydisplay an alternately flashing red and yellow light. Thisspecial light may be used by a vessel engaged in __________. | river bank protection | conducting submarine operations | firefighting | law enforcement | |
| 1 | 821 | D | D | INLAND ONLY One and two short blast signals must besounded on inland waters when ______. | two sailing vessels are in sight of one another and meeting at a distance of one quarter mile | two power-driven vessels are in sight of one another and will cross at a distance of one mile | two power-driven vessels are crossing within half a mile of each other and NOT in sight of each other | Two power-driven vessel are in sight of one another and are meeting at a distance of one half mile | |
| 1 | 1000 | D | C | BOTH INTERNATIONAL & INLAND You hear the fog signal of another vessel forward of your beam. Risk of collision may exist. You MUST _____. | begin a radar plot | stop your engines | take all way off, if necessary | All of the above | |
| 1 | 3683 | D | D | BOTH INTERNATIONAL & INLAND The rules require that a stand-on vessel SHALL take action to avoid collision whenshe determines that _____. | risk of collision exists | the other vessel will cross ahead of her | the other vessel is not taking appropriate action | collision cannot be avoided by the give-way vessel's maneuver alone | |
| 1 | 4000 | D | B | BOTH INTERNATIONAL & INLAND Your vessel is 75 meters in length and restricted in her ability to maneuver. Visibility is restricted. What signal do you sound if you are carrying out your work at anchor? | Five seconds ringing of a bell at intervals of not more than one minute | One prolonged blast followed by two short blasts on the whistle at intervals of not more than two minutes | Five seconds ringing of a bell and five second sounding of a gong at intervals of not more than one minute | Four short blasts on the whistle at intervals of not more than two minutes | |
| 1 | 4002 | D | C | BOTH INTERNATIONAL & INLAND While underway in fog, you hear a prolonged blast from another vessel. This signal indicates a _________________. | sailboat underway | vessel underway, towing | power-driven vessel underway, making way | vessel being towed | |
| 1 | 4003 | D | D | BOTH INTERNATIONAL & INLAND What is used to show the presence of a partly submerged object being towed? | A diamond shape on the towed object | An all-round light at each end of the towed object | A searchlight from the towing vessel in the direction of the tow | All of the above | |
| 1 | 4004 | D | C | BOTH INTERNATIONAL & INLAND At night, a barge being towed astern must display ___________________. | red and green sidelights only | a white sternlight only | sidelights and a sternlight | one all-round white light | |
| 1 | 4005 | D | B | BOTH INTERNATIONAL & INLAND Which signal is recognized asa distress signal? | Directing the beam of a searchlight at another vessel | A smoke signal giving off orange colored smoke | A whistle signal of one prolonged and three short blasts | International Code Signal "PAN" spoken over theradiotelephone | |
| 1 | 4006 | D | C | BOTH INTERNATIONAL & INLAND Your vessel is approaching a bend. You hear a prolonged blast from around the bend. You should _________________. | back your engines | stop your engines and drift | answer with one prolonged blast | sound the danger signal | |
| 1 | 4007 | D | C | BOTH INTERNATIONAL & INLAND If you do NOT understand the course or intention of an approaching vessel you should sound __________________. | one short blast | one prolonged blast | not less than five short blasts | not less than five prolonged blasts | |
| 1 | 4008 | D | D | BOTH INTERNATIONAL & INLAND If you are the stand-on vessel in a crossing situation, you may take action to avoid collision by your maneuver alone. When may this action be taken? | At any time you feel it is appropriate | Only when you have reached extremis | When you determine that your present course will cross ahead of the other vessel | When it becomes apparent to you that the give-way vessel is not taking appropriate action | |
| 1 | 4009 | D | C | BOTH INTERNATIONAL & INLAND Your 15-meter tug is underway and crossing a deep and narrow channel. A large container vessel is off your port bow on a steady bearing. Which statement is TRUE concerning this situation? | You should maintain course and speed. | The container vessel is the stand-on as it is the larger vessel. | You are not to impede the safe passage of the container vessel in the channel. | None of the above | |
| 1 | 4010 | D | C | BOTH INTERNATIONAL & INLAND If your vessel is underway in fog and you hear one prolonged and three short blasts, this is a _____________________. | vessel not under command | sailing vessel | vessel being towed (manned) | vessel being towed (unmanned) | |
| 1 | 4011 | D | C | BOTH INTERNATIONAL & INLAND A pilot vessel on pilotage duty at night will show sidelights and a sternlight ___________. | when at anchor | only when making way | at any time when underway | only when the identifying lights are not being shown | |
| 1 | 4012 | D | A | BOTH INTERNATIONAL & INLAND A vessel which displays the day signal shown in DIAGRAM 6 may be engaged in _______________. | submarine cable laying | pilotage duty | fishing | mineclearance | |
| 1 | 4013 | D | D | BOTH INTERNATIONAL & INLAND A vessel displaying the dayshapes shown in DIAGRAM 11 is ___________________. | towing | conducting underwater operations | drifting | aground | |
| 1 | 4014 | D | B | BOTH INTERNATIONAL & INLAND A power-driven vessel underway in fog making NO way must sound what signal? | One long blast | Two prolonged blasts | One prolonged blast | One prolonged and two short blasts | |
| 1 | 4015 | D | D | BOTH INTERNATIONAL & INLAND A 95-meter vessel aground sounds which fog signal? | A rapid ringing of a bell for 5 seconds every two minutes | A whistle signal of one short, one prolonged, and one short blast | A prolonged blast of the whistle at intervals not to exceed one minute | A rapid ringing of a bell for 5 seconds, preceded and followed by three separate and distinct strokes on the bell | |
| 1 | 4016 | D | A | BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning a vessel equipped with operational radar? | She must use this equipment to obtain early warning of risk of collision. | The radar equipment is only required to be used in restricted visibility. | The use of a radar excuses a vessel from the need of a look-out. | The safe speed of such a vessel will likely be greater than that of vessels without radar. | |
| 1 | 4017 | D | C | BOTH INTERNATIONAL & INLAND A 200-meter vessel is aground in fog. Which signal is optional? | A bell signal | A gong signal | A whistle signal | All of the above | |
| 1 | 4018 | D | D | BOTH INTERNATIONAL & INLAND Which is a distress signal? | A triangular flag above or below a ball | The International Code Signal of distress indicated by "JV" | A green smoke signal | Flames on the vessel as from a burning tar barrel | |
| 1 | 4020 | D | D | BOTH INTERNATIONAL & INLAND A vessel must proceed at a safe speed _____. | in restricted visibility | in congested waters | during darkness | at all times | |
| 1 | 4021 | D | D | BOTH INTERNATIONAL & INLAND A light signal of three flashes means _________________. | "I am in doubt as to your actions" | "My engines are full speed astern" | "I desire to overtake you" | "I am operating astern propulsion" | |
| 1 | 4022 | D | A | BOTH INTERNATIONAL & INLAND A sailing vessel underway may exhibit ___________________. | a red light over a green light at the masthead | a green light over a red light at the masthead | two white lights in a vertical line at the stern | an all-round white light at the bow | |
| 1 | 4023 | D | C | BOTH INTERNATIONAL & INLAND A sailing vessel is overtaking a tug and tow as shown in DIAGRAM 43. Which statement is CORRECT? | The sailing vessel is the stand-on vessel because it is overtaking. | The sailing vessel is the stand-on vessel because it is under sail. | The tug is the stand-on vessel because it is being overtaken. | The tug is the stand-on vessel because it is towing. | |
| 1 | 4024 | D | D | BOTH INTERNATIONAL & INLAND The word "vessel", in the Rules, includes _____. | sailing ships | nondisplacement craft | seaplanes | All of the above | |
| 1 | 4025 | D | C | BOTH INTERNATIONAL & INLAND A sailing vessel with the wind abaft the beam is navigating in fog. She should sound ____________________. | three short blasts | one prolonged blast | one prolonged and two short blasts | two prolonged blasts | |
| 1 | 4026 | D | D | BOTH INTERNATIONAL & INLAND Which is a distress signal? | Firing of green star shells | Sounding 5 short blasts on the whistle | Answering a one blast whistle signal with two blasts | A flaming barrel of oil on deck | |
| 1 | 4027 | D | D | BOTH INTERNATIONAL & INLAND If a towing vessel and her tow are severely restricted in their ability to change course, they may show lights in addition to their towing identification lights. These additional lights may be shown if the tow is ________________. | pushed ahead | towed alongside | towed astern | Any of the above | |
| 1 | 4028 | D | D | BOTH INTERNATIONAL & INLAND If two sailing vessels are running free with the wind on the same side, which one must keep clear of the other? | The one with the wind closest abeam | The one with the wind closest astern | The one to leeward | The one to windward | |
| 1 | 4029 | D | B | BOTH INTERNATIONAL & INLAND The masthead light may be located at other than the fore and aft centerline of a vessel _____. | less than 20 meters in length | less than 12 meters in length | which has separate sidelights carried on the outboard extremes of the vessel's breadth | engaged in fishing | |
| 1 | 4030 | D | B | BOTH INTERNATIONAL & INLAND The NAVIGATION RULES define a "vessel not under command" as a vessel which ______________. | from the nature of her work is unable to keep out of the way of another vessel | through some exceptional circumstance is unable to maneuver as required by the rules | by taking action contrary to the rules has created a special circumstance situation | is moored, aground or anchored in a fairway | |
| 1 | 4031 | D | A | BOTH INTERNATIONAL & INLAND Additional light signals are provided in the Annexes to the Rules for vessels __________. | engaged in fishing | not under command | engaged in towing | under sail | |
| 1 | 4032 | D | A | BOTH INTERNATIONAL & INLAND Which vessel may combine her sidelights and sternlight in one lantern on the fore and aft centerline of the vessel? | A 16-meter sailing vessel | A 25-meter power-driven vessel | A 28-meter sailing vessel | Any non-self-propelled vessel | |
| 1 | 4033 | D | B | BOTH INTERNATIONAL & INLAND The duration of a prolonged blast of the whistle is __________________. | 2 to 4 seconds | 4 to 6 seconds | 6 to 8 seconds | 8 to 10 seconds | |
| 1 | 4034 | D | A | BOTH INTERNATIONAL & INLAND A vessel "restricted in her ability to maneuver" is one which _____. | from the nature of her work is unable to maneuver as required by the rules | through some exceptional circumstance is unable to maneuver as required by the rules | due to adverse weather conditions is unable to maneuver as required by the rules | has lost steering and is unable to maneuver | |
| 1 | 4035 | D | D | BOTH INTERNATIONAL & INLAND When underway in restricted visibility, you might hear, at intervals of two minutes, any of the following fog signals EXCEPT _________________. | one prolonged blast | two prolonged blasts | one prolonged and two short blasts | ringing of a bell for five seconds | |
| 1 | 4036 | D | A | BOTH INTERNATIONAL & INLAND You are preparing to cross anarrow channel. You see a vessel that can only be navigatedsafely within the channel. You should ___________. | not cross the channel if you might impede the other vessel | initiate an exchange of passing signals | sound the danger signal | hold your course and speed | |
| 1 | 4038 | D | B | BOTH INTERNATIONAL & INLAND A bell is used to sound a fog signal for a _________________. | power-driven vessel underway | sailing vessel at anchor | vessel engaged in fishing | vessel not under command | |
| 1 | 4039 | D | B | BOTH INTERNATIONAL & INLAND You see another vessel approaching, and its compass bearing does not significantly change. This would indicate that _____. | you are the stand-on vessel | risk of collision exists | a special circumstances situation exists | the other vessel is dead in the water | |
| 1 | 4040 | D | B | BOTH INTERNATIONAL & INLAND Which of the dayshapes in DIAGRAM 16 indicates a vessel with a tow exceeding 200 meters in length? | A | B | C | D | |
| 1 | 4042 | D | B | BOTH INTERNATIONAL & INLAND A towing vessel pushing a barge ahead and rigidly connected in a composite unit shall show the lights of _________________. | a vessel towing by pushing ahead | a power-driven vessel, not towing | a barge being pushed ahead | either answer A or answer B | |
| 1 | 4043 | D | D | BOTH INTERNATIONAL & INLAND You are the watch officer on a power-driven vessel and notice a large sailing vessel approaching from astern. You should _____. | slow down | sound one short blast and change course to starboard | sound two short blasts and change course to port | hold your course and speed | |
| 1 | 4044 | D | D | BOTH INTERNATIONAL & INLAND You see a vessel's green sidelight bearing due east from you. The vessel might be heading _____. | east (090°) | northeast (045°) | northwest (315°) | southwest (225°) | |
| 1 | 4045 | D | A | BOTH INTERNATIONAL & INLAND A vessel shall be deemed tobe overtaking when she can see at night ________. | only the sternlight of the vessel | a sidelight and one masthead light of the vessel | only a sidelight of the vessel | any lights except the masthead lights of the vessel | |
| 1 | 4046 | D | B | BOTH INTERNATIONAL & INLAND You are underway on vessel "A" and sight vessel "B" which is a vessel underway and fishing. Which statement is true? (see DIAGRAM 14) | Vessel "A" must keep out of the way of vessel "B" because "B" is to port. | Vessel "A" must keep out of the way of vessel "B" because "B" is fishing. | Vessel "B" must keep out of the way of vessel "A" because "A" is to starboard. | In this case, both vessels are required by the Rules to keep clear of each other. | |
| 1 | 4047 | D | B | BOTH INTERNATIONAL & INLAND A vessel trawling will display a ____________________. | red light over a white light | green light over a white light | yellow light over a red light | white light over a green light | |
| 1 | 4048 | D | C | BOTH INTERNATIONAL & INLAND If it becomes necessary for a stand-on vessel to take action to avoid collision, she shall NOT, if possible, _____. | decrease speed | increase speed | turn to port for a vessel on her own port side | turn to starboard for a vessel on her own port side | |
| 1 | 4049 | D | B | BOTH INTERNATIONAL & INLAND Your vessel is NOT making way, but is not in any way disabled. Another vessel is approaching you on your starboard beam. Which statement is TRUE? | The other vessel must give way since your vessel is stopped. | Your vessel is the give-way vessel in a crossing situation. | You should be showing the lights or shapes for a vessel not under command. | You should be showing the lights or shapes for a vessel restricted in her ability to maneuver. | |
| 1 | 4050 | D | B | BOTH INTERNATIONAL & INLAND A 22-meter sailing vessel when also being propelled by machinery shall show during daylight hours a _______________________. | black diamond | black cone | black ball | basket | |
| 1 | 4051 | D | A | BOTH INTERNATIONAL & INLAND The rules concerning lights shall be complied with in all weathers from sunset to sunrise. The lights _____. | shall be displayed in restricted visibility during daylight hours | need not be displayed when no other vessels are in the area | shall be set at low power when used during daylight hours | need not be displayed by unmanned vessels | |
| 1 | 4052 | D | A | BOTH INTERNATIONAL & INLAND The lights shown in DIAGRAM 44, would be shown by a vessel which is _____. | aground | not under command and is dead in the water | not under command and is making way | laying or picking up navigation marks | |
| 1 | 4053 | D | A | BOTH INTERNATIONAL & INLAND Two vessels meeting in a "head- on" situation are directed by the Rules to ________________. | alter course to starboard and pass port to port | alter course to port and pass starboard to starboard | decide on which side the passage will occur by matching whistle signals | slow to bare steerageway | |
| 1 | 4054 | D | C | BOTH INTERNATIONAL & INLAND A vessel is "engaged in fishing" when ___________________. | her gear extends more than 100 meters from the vessel | she is using any type of gear, other than lines | she is using fishing apparatus which restricts her maneuverability | she has any fishing gear on board | |
| 1 | 4055 | D | C | BOTH INTERNATIONAL & INLAND When shall the stand-on vessel change course and speed? | The stand-on vessel may change course and speed at any time as it has the right-of-way | After the give-way vessel sounds one blast in a crossing situation | When action by the give-way vessel alone cannot prevent collision | When the two vessels become less than half a mile apart | |
| 1 | 4056 | D | C | BOTH INTERNATIONAL & INLAND A sailing vessel with the wind abaft the beam is navigating in restricted visibility. She should sound _________________. | three short blasts | one prolonged blast | one prolonged and two short blasts | two prolonged blasts | |
| 1 | 4057 | D | D | BOTH INTERNATIONAL & INLAND You see a vessel displaying thecode flag "LIMA" below which is a red ball. The vessel is_____. | trolling | getting ready to receive aircraft | aground | in distress | |
| 1 | 4058 | D | B | BOTH INTERNATIONAL & INLAND Which factor is listed in the Rules as one which must be taken into account when determining safe speed? | The construction of the vessel | The maneuverability of the vessel | The experience of vessel personnel | All of the above must be taken into account. | |
| 1 | 4059 | D | D | BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning seaplanes on the water? | A seaplane must show appropriate lights but need not exhibit shapes. | A seaplane should exhibit the lights for a vessel constrained by her draft. | In situations where a risk of collision exists, a seaplane should always give way. | A seaplane on the water shall, in general, keep well clear of all vessels. | |
| 1 | 4060 | D | B | BOTH INTERNATIONAL & INLAND A vessel approaching your vessel from 235° relative is in what type of situation? | Meeting | Overtaking | Crossing | Passing | |
| 1 | 4061 | D | D | BOTH INTERNATIONAL & INLAND Vessels "A" and "B" are crossing as shown in DIAGRAM 26. Which statement is TRUE? | The vessels should pass starboard to starboard. | Vessel "B" should pass under the stern of vessel "A". | Vessel "B" should alter course to the right. | Vessel "A" must keep clear of vessel "B". | |
| 1 | 4062 | D | A | BOTH INTERNATIONAL & INLAND You are in charge of apower-driven vessel navigating at night. You sight the redsidelight of another vessel on your port bow. The othervessel's after masthead light is to the right of her forwardmasthead light. You should _____. | hold course and speed | alter course to port | stop engines | sound the danger signal | |
| 1 | 4063 | D | B | BOTH INTERNATIONAL & INLAND There are two classes of vessels which, to the extent necessary to carry out their work, do not have to comply with the rule regarding traffic separation schemes. One of these is a vessel _____________. | engaged in fishing in a traffic lane | servicing a submarine cable | towing another | engaged on pilotage duty | |
| 1 | 4065 | D | B | BOTH INTERNATIONAL & INLAND You are underway in fog when you hear the rapid ringing of a bell for five seconds followed by the sounding of a gong for five seconds. This signal indicates a vessel ___________________. | aground | more than 100 meters in length, at anchor | fishing while making no way through the water | fishing in company with another vessel | |
| 1 | 4066 | D | D | BOTH INTERNATIONAL & INLAND The wind is ESE, and a sailing vessel is steering NW. Which fog signal should she sound? | One blast at one-minute intervals | One blast at two-minute intervals | Two blasts at one-minute intervals | One prolonged and two short blasts at two-minute intervals | |
| 1 | 4067 | D | D | BOTH INTERNATIONAL & INLAND At night, which lights are required to be shown by a dredge on the side of the dredge which another vessel may pass? | One red light | Two red lights | One white light | Two green lights | |
| 1 | 4068 | D | A | BOTH INTERNATIONAL & INLAND In the situation illustrated inDIAGRAM 2, Vessel I is a power-driven vessel. Vessel II isa sailing vessel with the wind dead aft. Which statementabout this situation is correct? | Vessel I should keep out of the way of Vessel II. | Vessel II should keep out of the way of Vessel I. | Vessel II would normally be the stand-on vessel, but should stay out of the way in this particular situation. | The Rules of Special Circumstances applies, and neither vessel is the stand-on vessel. | |
| 1 | 4069 | D | A | BOTH INTERNATIONAL & INLAND Which lights are shown by a vessel restricted in her ability to maneuver to indicate that the vessel is making way? | Masthead lights, sidelights and sternlight | Masthead lights and sidelights only | Sidelights and sternlight only | Sidelights only | |
| 1 | 4070 | D | C | BOTH INTERNATIONAL & INLAND You are underway and hear a vessel continuously sounding her fog whistle. This indicates the other vessel _________________. | desires to communicate by radio | desires a pilot | is in distress | is aground | |
| 1 | 4072 | D | A | BOTH INTERNATIONAL & INLAND A 30-meter tug is underway and NOT towing. At night, this vessel must show sidelights and _____. | one masthead light and a sternlight | two masthead lights and a sternlight | three masthead lights and a sternlight | a sternlight | |
| 1 | 4073 | D | B | BOTH INTERNATIONAL & INLAND While underway in fog, you hear a signal of one prolonged blast followed by three short blasts. This is the fog signal for a vessel ___________. | towing | manned being towed | unmanned being towed | at anchor | |
| 1 | 4074 | D | D | BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning a vessel of 75 meters in length, at anchor? | She must show an all-round white light forward. | She must show a second all-round white light aft. | She may use her working lights to illuminate her decks. | All of the above | |
| 1 | 4075 | D | C | BOTH INTERNATIONAL & INLAND You are approaching another vessel. She is about one mile distant and is on your starboard bow. You believe she will cross ahead of you. She then sounds a whistle signal of five short blasts. You should _______________________. | answer the signal and hold course and speed | reduce speed slightly to make sure she will have room to pass | make a large course change, and slow down if necessary | wait for another whistle signal from the other vessel | |
| 1 | 4076 | D | D | BOTH INTERNATIONAL & INLAND If a rowboat underway does NOT show the lights specified for a sailing vessel underway, it shall show a _________________. | white light from sunset to sunrise | combined lantern showing green to starboard and red to port and shown from sunset to sunrise | combined lantern showing green to starboard and red to port and shown in sufficient time to prevent collision | white light shown in sufficient time to prevent collision | |
| 1 | 4077 | D | A | BOTH INTERNATIONAL & INLAND A vessel at anchor shall display, between sunrise and sunset, on the forward part of the vessel where it can best be seen ___________________. | one black ball | two black balls | one red ball | two orange and white balls | |
| 1 | 4078 | D | D | BOTH INTERNATIONAL & INLAND You are underway in fog and hear a fog signal of two prolonged blasts on your starboard quarter. You should _____. | stop your vessel | change course to the left | change course to the right | hold your course and speed | |
| 1 | 4080 | D | A | BOTH INTERNATIONAL & INLAND You are underway, in fog, when you hear a whistle signal of one prolonged blast followed by two short blasts. This signal could indicate a vessel ___________________. | not under command | being towed | aground | All of the above | |
| 1 | 4081 | D | C | BOTH INTERNATIONAL & INLAND You are aboard vessel "A" , a power-driven vessel, on open waters and vessel "B", a sailing vessel, is sighted off your port bow as shown in DIAGRAM 27. Which vessel is the stand-on vessel? | Vessel "A" because it is towing | Vessel "A" because it is to starboard of vessel "B" | Vessel "B" because it is sailing | Vessel "B" because it is to port of vessel "A" | |
| 1 | 4082 | D | B | BOTH INTERNATIONAL & INLAND Which vessel must exhibit three white masthead lights in a vertical line? | Any vessel towing astern | A vessel whose tow exceeds 200 meters astern | A vessel not under command, at anchor | A vessel being towed | |
| 1 | 4083 | D | B | BOTH INTERNATIONAL & INLAND All of the following are distress signals EXCEPT _________________. | the continuous sounding of any fog signal apparatus | giving five or more short and rapid blasts of the whistle | firing a gun at intervals of about a minute | a barrel with burning oil in it, on deck | |
| 1 | 4084 | D | B | BOTH INTERNATIONAL & INLAND If you are approaching a bend, and hear a whistle signal of one prolonged blast from around the bend, you should answer with a signal of _____________. | a short blast | a prolonged blast | one short, one prolonged, and one short blast | a long blast | |
| 1 | 4085 | D | D | BOTH INTERNATIONAL & INLAND Which vessel must show an after masthead light, if over 50 meters in length? | A vessel engaged in fishing | A vessel at anchor | A vessel not under command | A vessel trawling | |
| 1 | 4086 | D | C | BOTH INTERNATIONAL & INLAND You are on vessel "A" and approaching vessel "B" as shown in DIAGRAM 15. You are not sure whether your vessel is crossing or overtaking vessel "B". You should ___________________________. | change course to make the situation definitely either crossing or overtaking | consider it to be a crossing situation | consider it to be an overtaking situation | consider it a crossing situation if you can cross ahead safely | |
| 1 | 4087 | D | C | BOTH INTERNATIONAL & INLAND A "flashing light", by the definition given in the rules, is a light that _______. | is red in color | is visible over an arc of the horizon of 360° | flashes at regular intervals at a frequency of 120 flashes or more per minute | All of the above | |
| 1 | 4088 | D | D | BOTH INTERNATIONAL & INLAND The term "restricted visibility" as used in the Rules refers ___________________. | only to fog | only to visibility of less than one-half of a mile | to visibility where you cannot see shore | to any condition where visibility is restricted | |
| 1 | 4089 | D | D | BOTH INTERNATIONAL AND INLAND A vessel engaged in mineclearing shows special identity lights _____. | in addition to the lights required for a power-driven vessel | which mean that other vessels should not approach within 1000 meters of the mineclearing vessel | which are green and show all-round | All of the above | |
| 1 | 4090 | D | C | BOTH INTERNATIONAL & INLAND According to the Navigation Rules, you may depart from the Rules when _______________. | no vessels are in sight visually | no vessels are visible on radar | you are in immediate danger | out of sight of land | |
| 1 | 4091 | D | B | BOTH INTERNATIONAL & INLAND An authorized light to assist in the identification of submarines operating on the surface is a(n) ________________. | blue rotating light | intermittent flashing amber/yellow light | flashing white light | flashing sidelight | |
| 1 | 4093 | D | A | BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning two sailing vessels? | A sailing vessel with the wind forward of the beam on her port side shall keep out of the way of a sailing vessel with the wind forward of the beam on the starboard side. | When both vessels have the wind on the same side, the vessel to leeward shall keep out of the way. | A sail vessel with the wind abaft of the beam must keep out of the way of a vessel sailing into the wind. | None of the above | |
| 1 | 4094 | D | C | BOTH INTERNATIONAL & INLAND You are aboard vessel "A" which is towing on open waters when vessel "B", a sailing vessel, is sighted off your port bow, as shown in DIAGRAM 20. Which vessel is the stand-on? | Vessel "A" is the stand-on vessel because it is towing. | Vessel "A" is the stand-on vessel because it is to starboard of vessel "B". | Vessel "B" is the stand-on vessel because it is sailing. | Vessel "B" is the stand-on vessel because it is to port of vessel "A". | |
| 1 | 4095 | D | B | BOTH INTERNATIONAL & INLAND When underway in a channel, you should keep to the _____. | middle of the channel | starboard side of the channel | port side of the channel | side of the channel that has the widest turns | |
| 1 | 4096 | D | A | BOTH INTERNATIONAL & INLAND While underway, in fog, you hear a whistle signal of one prolonged blast followed by two short blasts. This signal is sounded by a vessel ___________. | not under command | being towed | on pilotage duty | aground | |
| 1 | 4097 | D | B | BOTH INTERNATIONAL & INLAND When navigating in restricted visibility, a power-driven vessel shall ________________. | stop her engines when hearing a fog signal forward of her beam, even if risk of collision does not exist | have her engines ready for immediate maneuver | when making way, sound one prolonged blast at intervals of not more than one minute | operate at a speed to be able to stop in the distance of her visibility | |
| 1 | 4098 | D | D | BOTH INTERNATIONAL & INLAND You can indicate that your vessel is in distress by ___________________. | displaying a large red flag | displaying three black balls in a vertical line | sounding four or more short rapid blasts on the whistle | continuously sounding the fog whistle | |
| 1 | 4099 | D | B | BOTH INTERNATIONAL & INLAND During the day, a dredge will indicate the side on which it is safe to pass by displaying _________________. | two balls in a vertical line | two diamonds in a vertical line | a single black ball | no shape is shown during the day | |
| 1 | 4100 | D | B | BOTH INTERNATIONAL & INLAND A 45-meter vessel is pulling a 210-meter tow. She may exhibit ________________. | a masthead light forward, and two masthead lights in a vertical line aft | three masthead lights forward and one aft | two masthead lights forward and no after masthead light | three masthead lights aft and none forward | |
| 1 | 4101 | D | A | BOTH INTERNATIONAL & INLAND Which statement isTRUE concerning the danger signal? | When any vessel fails to understand the intentions of an approaching vessel she must sound the danger signal. | Only the stand-on vessel can sound the danger signal. | Distress signals may be used in place of the danger signal. | The danger signal consists of 4 or more short blasts of the whistle. | |
| 1 | 4102 | D | B | BOTH INTERNATIONAL & INLAND A distress signal _____________. | consists of 5 or more short blasts of the fog signal apparatus | may be used separately or with other distress signals | consists of the raising and lowering of a large white flag | is used to indicate doubt about another vessel's intentions | |
| 1 | 4103 | D | C | BOTH INTERNATIONAL & INLAND Which is the danger signal? | A continuous sounding of the fog signal | Firing a gun every minute | Five or more short rapid blasts on the whistle | One prolonged blast on the whistle | |
| 1 | 4104 | D | B | BOTH INTERNATIONAL & INLAND A vessel is "in sight" of another vessel when ___________________. | she can be observed by radar | she can be observed visually from the other vessel | she can be plotted on radar well enough to determine her heading | her fog signal can be heard | |
| 1 | 4105 | D | A | BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning two sailing vessels approaching each other? | A sailing vessel overtaking another is the give-way vessel. | When each is on a different tack, the vessel on the starboard tack shall keep out of the way. | A sailing vessel seeing another to leeward on an undetermined tack shall hold her course. | All of the above | |
| 1 | 4106 | D | B | BOTH INTERNATIONAL & INLAND What type of vessel or operation is indicated by a vessel showing two cones with the apexes together? | Sailing vessel | Vessel trawling | Mineclearing | Dredge | |
| 1 | 4107 | D | B | BOTH INTERNATIONAL & INLAND A power-driven vessel has on her port side a sailing vessel which is on a collision course. The power-driven vessel is to ___________________. | maintain course and speed | keep clear, passing at a safe distance | sound one blast and turn to starboard | stop her engines | |
| 1 | 4108 | D | C | BOTH INTERNATIONAL & INLAND At specified intervals, a vessel towing in fog shall sound _________________. | one prolonged blast | two prolonged blasts | one prolonged and two short blasts in succession | one prolonged and three short blasts in succession | |
| 1 | 4109 | D | C | BOTH INTERNATIONAL & INLAND A vessel towing in fog shall sound a fog signal of _________________. | one prolonged blast every one minute | two prolonged blasts every two minutes | one prolonged and two short blasts every two minutes | one prolonged blast every two minutes | |
| 1 | 4110 | D | C | BOTH INTERNATIONAL & INLAND Continuous sounding of a fog whistle by a vessel is a signal ___________________. | that the vessel is anchored | to request the draw span of a bridge to be opened | of distress | that the vessel is broken down and drifting | |
| 1 | 4111 | D | B | BOTH INTERNATIONAL AND INLAND A 50-meter vessel is towing astern and the length of the tow is 100 meters. In addition to sidelights, which lights may she show to fully comply with the Rules? | Two masthead lights forward, a sternlight, and a towing light above the sternlight | A masthead light forward, two masthead lights aft, a sternlight, and a towing light above the sternlight | No masthead light forward, two masthead lights aft, a sternlight, and a towing light above the sternlight | Three masthead lights forward, one masthead light aft, and two towing lights in a vertical line at the stern | |
| 1 | 4112 | D | C | BOTH INTERNATIONAL & INLAND A vessel, which is unable to maneuver due to some exceptional circumstance, shall exhibit ___________________. | during the day, three balls in a vertical line | during the day, three shapes, the highest and lowest being balls and the middle being a diamond | when making way at night, two all-round red lights, sidelights, and a sternlight | when making way at night, masthead lights, sidelights, and a sternlight | |
| 1 | 4113 | D | A | BOTH INTERNATIONAL & INLAND Which signal, other than a distress signal, can be used by a vessel to attract attention? | Searchlight beam | Continuous sounding of a fog signal apparatus | Burning barrel | Orange smoke signal | |
| 1 | 4114 | D | C | BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning the light used with whistle signals? | Use of such a light is required. | The light shall have the same characteristics as a masthead light. | It is only used to supplement short blasts of the whistle. | All of the above | |
| 1 | 4115 | D | C | BOTH INTERNATIONAL & INLAND What is the minimum sound signaling equipment required aboard a vessel 14 meters in length? | A bell only | A whistle only | A bell and a whistle | Any means of making an efficient sound signal | |
| 1 | 4116 | D | B | BOTH INTERNATIONAL & INLAND The towing light is a(n) ______. | flashing amber light | yellow light with the same characteristics as the sternlight | all-round yellow light | yellow light with the same characteristics as the masthead light | |
| 1 | 4117 | D | B | BOTH INTERNATIONAL & INLAND An all-round flashing yellow light may be exhibited by a(n) _________________. | vessel not under command | air cushion vessel in the nondisplacement mode | vessel towing a submerged object | vessel engaged in diving operations | |
| 1 | 4118 | D | A | BOTH INTERNATIONAL & INLAND When should the fog signal of a manned vessel under tow be sounded? | After the towing vessel's fog signal | Before the towing vessel's fog signal | Approximately one minute after the towing vessel's fog signal | If the towing vessel is sounding a fog signal, the manned vessel being towed is not required to sound any fog signal. | |
| 1 | 4119 | D | A | BOTH INTERNATIONAL & INLAND A lantern combining a vessel's navigation lights may be shown on a ________________. | 15-meter sailing vessel | 20-meter vessel engaged in fishing and making way | 25-meter power-driven vessel trolling | 25-meter pilot vessel | |
| 1 | 4120 | D | D | BOTH INTERNATIONAL & INLAND A vessel engaged in fishing during the day would show _______________. | one black ball | two cones with bases together | a cone, apex downward | two cones, apexes together | |
| 1 | 4121 | D | A | BOTH INTERNATIONAL & INLAND A sailing vessel is NOT required to keep out of the way of a _____________________. | power-driven vessel | vessel not under command | vessel restricted in her ability to maneuver | vessel engaged in fishing | |
| 1 | 4122 | D | D | BOTH INTERNATIONAL & INLAND Which vessel may sound the danger signal? | The stand-on vessel in a crossing situation | The give-way vessel in a crossing situation | A vessel at anchor | All of the above | |
| 1 | 4123 | D | A | BOTH INTERNATIONAL & INLAND While underway in fog, you hear a vessel sound one prolonged blast followed by two short blasts on the whistle. What does this signal indicate? | A vessel towing | A vessel engaged in pilotage duty | A vessel being towed | A vessel aground | |
| 1 | 4124 | D | C | BOTH INTERNATIONAL & INLAND In DIAGRAM 28, vessel "A" is underway and pushing ahead when vessel "B" is sighted off the starboard bow. Which vessel is the stand-on vessel? | Vessel "A" is the stand-on vessel because it is to port. | Vessel "A" is the stand-on vessel because it is pushing ahead. | Vessel "B" is the stand-on vessel because it is to starboard of vessel "A". | Neither vessel is the stand-on vessel. | |
| 1 | 4125 | D | B | BOTH INTERNATIONAL & INLAND If you saw flames aboard a vessel but could see the vessel was not on fire, you would know that the _____. | crew was trying to get warm | vessel required immediate assistance | vessel was attempting to attract the attention of a pilot boat | vessel was being illuminated for identification by aircraft | |
| 1 | 4126 | D | D | BOTH INTERNATIONAL & INLAND By day, when it is impracticable for a small vessel engaged in diving operations to display the shapes for a vessel engaged in underwater operations, she shall display ___________________. | three black balls in a vertical line | two red balls in a vertical line | a black cylinder | a rigid replica of the International Code flag "A" | |
| 1 | 4127 | D | C | BOTH INTERNATIONAL & INLAND A vessel will NOT show sidelights when _________________. | underway but not making way | making way, not under command | not under command, not making way | trolling underway | |
| 1 | 4128 | D | C | BOTH INTERNATIONAL & INLAND Which display indicates a vessel conducting mineclearance operations? | Three balls in a vertical line | Two balls in a vertical line | One ball near the foremast and one ball at each yardarm | One diamond near the foremast and one ball at each yardarm | |
| 1 | 4129 | D | A | BOTH INTERNATIONAL & INLAND Which vessel MUST show two masthead lights in a vertical line? | A power-driven vessel less than 50 meters in length with a 20-meter tow | A sailing vessel towing a small vessel astern | A vessel not under command | A vessel engaged in dredging | |
| 1 | 4130 | D | A | BOTH INTERNATIONAL & INLAND The duration of each blast of the whistle signals used in meeting and crossing situations is _________________. | about 1 second | 2 or 4 seconds | 4 to 6 seconds | 8 to 10 seconds | |
| 1 | 4131 | D | D | BOTH INTERNATIONAL & INLAND What dayshape should a vessel being towed exhibit if the tow EXCEEDS 200 meters? | Two balls | Two diamonds | One ball | One diamond | |
| 1 | 4133 | D | C | BOTH INTERNATIONAL & INLAND Which statement is TRUE when you are towing more than one barge astern at night? | Only the last barge in the tow must be lighted. | Only the first and last barges in the tow must be lighted. | All barges in the tow must be lighted. | All barges, except unmanned barges, must be lighted. | |
| 1 | 4134 | D | B | BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown in DIAGRAM 9. Which vessel is the stand-on vessel? | Vessel "A" | Vessel "B" | Neither vessel | Both vessels must keep clear of the other. | |
| 1 | 4135 | D | D | BOTH INTERNATIONAL & INLAND A vessel is being propelled both by sail and by engines. Under the Rules, the vessel is ________________. | a "special circumstance" vessel | not covered under any category | a sail vessel | a power-driven vessel | |
| 1 | 4136 | D | C | BOTH INTERNATIONAL & INLAND The white masthead light required for a power-driven vessel under the Rules is visible over how many degrees of the horizon? | 022.5° | 112.5° | 225.0° | 360.0° | |
| 1 | 4137 | D | D | BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning lights and shapes for towing vessels? | If a tow exceeds 200 meters in length, the towing vessel will display a black ball during daylight. | When towing astern, a vessel will carry her identification lights at the masthead in addition to her regular masthead light. | When towing astern, the towing vessel may show either a sternlight or a towing light, but not both. | If the towing vessel is over 50 meters in length, she must carry forward and after masthead lights. | |
| 1 | 4138 | D | D | BOTH INTERNATIONAL & INLAND A vessel may use any sound or light signals to attract the attention of another vessel as long as ___________________. | white lights are not used | red and green lights are not used | the vessel signals such intentions over the radiotelephone | the signal cannot be mistaken for a signal authorized by the Rules | |
| 1 | 4139 | D | B | BOTH INTERNATIONAL & INLAND What type of vessel or operation is indicated by a vessel displaying two cones with the apexes together? | Sailing | Trawling | Minesweeping | Dredging | |
| 1 | 4140 | D | D | BOTH INTERNATIONAL & INLAND The rule regarding look-outs applies _____________________. | in restricted visibility | between dusk and dawn | in heavy traffic | All of the above | |
| 1 | 4141 | D | C | BOTH INTERNATIONAL & INLAND While underway and towing, your vessel enters fog. Which fog signal should you sound? | One prolonged blast | Two prolonged blasts | One prolonged blast and two short blasts | Three distinct blasts | |
| 1 | 4142 | D | A | BOTH INTERNATIONAL & INLAND A vessel engaged in fishing must display a light in the direction of any gear that extends outward more than 150 meters. The color of this light is _________________. | white | green | red | yellow | |
| 1 | 4143 | D | D | BOTH INTERNATIONAL & INLAND Which statement is true concerning a towing light when a towing vessel is towing astern? | When a towing light is shown, no sternlight is necessary. | When a sternlight is shown, no towing light is necessary. | The towing light is shown below the sternlight. | The towing light is shown above the sternlight. | |
| 1 | 4144 | D | A | BOTH INTERNATIONAL & INLAND At night, a vessel which is less than 7 meters in length and anchored in an area where other vessels do not normally navigate is ___________________. | not required to show any anchor lights | required to show a flare-up light | required to show one white light | required to show sidelights and a sternlight | |
| 1 | 4145 | D | C | BOTH INTERNATIONAL & INLAND You are in charge of a 120-meter power-driven vessel at anchor in fog, sounding the required anchor signals. You hear the fog signal of a vessel underway off your port bow. You may sound _______________. | at least five short and rapid blasts | two short blasts | one short, one prolonged, and one short blast | three short blasts | |
| 1 | 4146 | D | A | BOTH INTERNATIONAL & INLAND When taking action to avoid collision, you should ___________________. | make sure the action is taken in enough time | not make any large course changes | not make any large speed changes | All of the above | |
| 1 | 4147 | D | D | BOTH INTERNATIONAL & INLAND Which vessel would have no white lights visible when meeting her head-on? | A vessel trawling | A vessel restricted in her ability to maneuver | A vessel mineclearing | A vessel not under command | |
| 1 | 4148 | D | D | BOTH INTERNATIONAL & INLAND You are in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must ___________. | stop your engines | sound two prolonged blasts of the whistle | sound the danger signal | slow to bare steerageway | |
| 1 | 4149 | D | A | BOTH INTERNATIONAL & INLAND A vessel displaying the lights illustrated in DIAGRAM 84 is _____________________. | not under command | showing improper lights | towing | dredging | |
| 1 | 4150 | D | B | BOTH INTERNATIONAL & INLAND A towing vessel 30 meters in length is pushing barges ahead. How many white masthead lights is the vessel REQUIRED to show at night? | One | Two | Three | Four | |
| 1 | 4151 | D | A | BOTH INTERNATIONAL & INLAND While underway in fog you hear a vessel sound one prolonged blast followed by two short blasts. What does this signal indicate? | A vessel towing | A vessel being towed | A pilot vessel engaged on pilotage duty | A vessel aground | |
| 1 | 4152 | D | B | BOTH INTERNATIONAL & INLAND A power-driven vessel with a 150-meter stern tow shall display _____. | three masthead lights in a vertical line | a towing light above the sternlight | two towing lights in a vertical line | a red light over a white light at the masthead | |
| 1 | 4153 | D | C | BOTH INTERNATIONAL & INLAND A vessel transferring cargo while underway is classified by the Rules as a vessel _________________. | not under command | in special circumstances | restricted in her ability to maneuver | constrained by her draft | |
| 1 | 4154 | D | C | BOTH INTERNATIONAL & INLAND Which vessel, when anchored at night, is NOT required to show anchor lights? | A power-driven vessel | A vessel engaged on pilotage duty | A vessel dredging | A vessel restricted in her ability to maneuver | |
| 1 | 4155 | D | D | BOTH INTERNATIONAL & INLAND A vessel towing is showing three forward white masthead lights in a vertical line. This means that the length of the ________________. | towing vessel is less than 50 meters | towing vessel is greater than 50 meters | tow is less than 200 meters | tow is greater than 200 meters | |
| 1 | 4156 | D | C | BOTH INTERNATIONAL & INLAND Which vessel is "underway" under the Rules of the Road? | A vessel at anchor with the engine running | A vessel with a line led to a tree onshore | A vessel drifting with the engine off | A vessel aground | |
| 1 | 4157 | D | D | BOTH INTERNATIONAL & INLAND Which vessel may exhibit identifying lights when not actually engaged in her occupation? | A trawler | A fishing vessel | A tug | None of the above | |
| 1 | 4158 | D | C | BOTH INTERNATIONAL & INLAND A 25-meter vessel trawling will show the dayshape(s) consisting of _______________. | a basket | two balls | two cones, apexes together | a cone, apex downward | |
| 1 | 4159 | D | D | BOTH INTERNATIONAL & INLAND A power-driven vessel underway shall keep out of the way of a _________________. | vessel not under command | vessel engaged in fishing | sailing vessel | All of the above | |
| 1 | 4160 | D | A | BOTH INTERNATIONAL & INLAND A fog signal of one short, one prolonged, and one short blast may be sounded by a ________. | vessel at anchor | vessel not under command | vessel towing | All of the above | |
| 1 | 4161 | D | A | BOTH INTERNATIONAL & INLAND A continuous sounding of a fog-signal apparatus indicates _____. | the vessel is in distress | the vessel has completed loading dangerous cargo | it is safe to pass | the vessel is anchored | |
| 1 | 4162 | D | B | BOTH INTERNATIONAL & INLAND A vessel at night, displaying the lights illustrated in DIAGRAM 83 is _________________. | fishing | not under command | towing | being towed | |
| 1 | 4163 | D | A | BOTH INTERNATIONAL & INLAND You are underway in restrictedvisibility. You hear the fog signal of another vessel about22° on your starboard bow. If danger of collision existsyou must __________. | reduce your speed to bare steerageway | slow your engines and let the other vessel pass ahead of you | alter the course to starboard to pass around the other vessel's stern | alter course to port to pass the other vessle on its port side | |
| 1 | 4164 | D | B | BOTH INTERNATIONAL & INLAND While underway in fog you hear a whistle signal consisting of one prolonged blast followed immediately by two short blasts. This signal is sounded in fog by _________________. | vessels at anchor, not engaged in fishing | vessels underway and towing | vessels in danger | pilot vessels | |
| 1 | 4165 | D | A | BOTH INTERNATIONAL & INLAND Which statement is TRUE of a 30-meter sailing vessel underway? | She must show sidelights and a sternlight in restricted visibility. | She may show an all-round white light at the top of the mast. | She need not show a sternlight if she is showing all-round lights on the mast. | If she is using propelling machinery, she shall show forward a shape consisting of two cones, apexes together. | |
| 1 | 4166 | D | B | BOTH INTERNATIONAL & INLAND A power-driven vessel towing another vessel astern (tow less than 200 meters) shall show _______________. | three masthead lights in a vertical line instead of either the forward or after masthead light | two masthead lights in a vertical line instead of either the forward or after masthead lights | two towing lights in a vertical line at the stern | a small white light aft of the funnel | |
| 1 | 4167 | D | A | BOTH INTERNATIONAL & INLAND A vessel which is "restricted in her ability to maneuver" under the Rules, is a vessel which is _____________________. | mineclearing | engaged in fishing | at anchor | not under command | |
| 1 | 4168 | D | B | BOTH INTERNATIONAL & INLAND When a vessel signals her distress by means of a gun or other explosive signal, the firing should be at intervals of approximately _____. | 10 minutes | 1 minute | 1 hour | 3 minutes | |
| 1 | 4169 | D | D | BOTH INTERNATIONAL & INLAND A "head on" situation shall bedeemed to exist at night when a power-driven vessel sees another power-driven vessel ahead and _________________. | one sidelight and the masthead light are visible | the vessels will pass closer than half a mile | both vessels sound one prolonged blast | both sidelights and masthead light(s) are visible | |
| 1 | 4170 | D | B | BOTH INTERNATIONAL & INLAND A 20-meter vessel is towing another vessel astern. The length of the tow from the stern of the towing vessel to the stern of the tow is 75 meters. How many white towing masthead lights shall the towing vessel show at night? | 1 | 2 | 3 | 4 | |
| 1 | 4171 | D | D | BOTH INTERNATIONAL & INLAND A vessel enagaged in fishing,and at anchor, shall show _____________. | an anchor light | sidelights and a sternlight | three lights in a vertical line, the highest and lowest being red, and the middle being white | None of the above | |
| 1 | 4173 | D | D | BOTH INTERNATIONAL & INLAND A power-driven vessel underway shall keep out of the way of a vessel _______________. | not under command | restricted in her ability to maneuver | engaged in fishing | All of the above | |
| 1 | 4174 | D | C | BOTH INTERNATIONAL & INLAND A vessel sounding a fog signal of one short, one prolonged, and one short blast is indicating that the vessel is _______________. | fishing | in distress | at anchor | not under command | |
| 1 | 4175 | D | A | BOTH INTERNATIONAL & INLAND A vessel displaying the lights illustrated in DIAGRAM 57 is ________________. | restricted in her ability to maneuver and not making way | engaged in fishing and not making way | a pilot vessel underway and making way on pilotage duty | towing and making way | |
| 1 | 4176 | D | D | BOTH INTERNATIONAL & INLAND Two all-round red lightsdisplayed in a vertical line are shown by a vessel ________. | being towed | pushing a barge ahead | at anchor | not under command | |
| 1 | 4177 | D | C | BOTH INTERNATIONAL & INLAND Your vessel is underway inreduced visibility. You hear the fog signal of anothervessel about 30‚ on your starboard bow. If danger ofcollision exists, you must _______. | alter course to starboard to pass around the other vessel's stern | slow your engines and let the other vessel pass ahead of you | reduce your speed to bare steerageway | alter course to port and pass the other vessel on its port side | |
| 1 | 4178 | D | A | BOTH INTERNATIONAL & INLAND You are underway in fog and you hear one prolonged blast followed by two short blasts. This is a vessel _________________. | towing | engaged on pilotage duty | aground in a fairway | stopped and making no way through the water | |
| 1 | 4179 | D | D | BOTH INTERNATIONAL & INLAND A sailing vessel is NOT allowed to show the all-round red over green lights on the mast if __________________. | she is showing sidelights | her sidelights are combined and shown on the fore and aft centerline of the vessel | she is showing a sternlight | her sidelights and sternlight are combined in one lantern and shown on the mast | |
| 1 | 4180 | D | B | BOTH INTERNATIONAL & INLAND A power-driven vessel, when towing astern, shall show _____. | two towing lights in a vertical line | a towing light in a vertical line above the sternlight | two towing lights in addition to the sternlight | a small white light in lieu of the sternlight | |
| 1 | 4181 | D | B | BOTH INTERNATIONAL & INLAND According to the Rules, which vessel is NOT "restricted in her ability to maneuver"? | A vessel servicing a navigation marker | A sailing vessel | A vessel mineclearing | A vessel dredging | |
| 1 | 4182 | D | D | BOTH INTERNATIONAL & INLAND Distress signals may be _____. | red flares | smoke signals | sound signals | Any of the above | |
| 1 | 4183 | D | A | BOTH INTERNATIONAL & INLAND When anchoring a 25-meter vessel at night, you must show __________________. | one all-round white light | two all-round white lights | one all-round white light and the sidelights | the sidelights and a sternlight | |
| 1 | 4184 | D | B | BOTH INTERNATIONAL & INLAND You are approaching another vessel at night. You can see both red and green sidelights and, above the level of the sidelights, three white lights in a vertical line. The vessel may be _________________. | not under command | towing a tow more than 200 meters astern | trawling | underway and dredging | |
| 1 | 4185 | D | D | BOTH INTERNATIONAL & INLAND A vessel engaged in fishing, and at anchor, should exhibit _____. | an anchor light | sidelights and sternlight | three lights in a vertical line, the highest and lowest being red, and the middle being white | None of the above | |
| 1 | 4186 | D | B | BOTH INTERNATIONAL & INLAND A vessel fishing should display which day signal shown in DIAGRAM 1? | A | B | C | D | |
| 1 | 4187 | D | C | BOTH INTERNATIONAL & INLAND In a crossing situation on open waters, a sailing vessel shall keep out of the way of all the following vessels EXCEPT a ___________________. | vessel not under command | vessel restricted in her ability to maneuver | power-driven vessel approaching on her starboard side | vessel fishing | |
| 1 | 4188 | D | C | BOTH INTERNATIONAL & INLAND You are at anchor in fog on a120-meter power-driven vessel. You hear the fog signal ofa vessel approaching off your port bow. You may sound ____. | one prolonged, one short and one prolonged | two short blasts | one short, one prolonged, and one short blast | one prolonged blast | |
| 1 | 4189 | D | C | BOTH INTERNATIONAL & INLAND You see a vessel displaying the day signal shown in DIAGRAM 6. The vessel may be _________. | not under command | fishing with trawls | laying cable | aground | |
| 1 | 4190 | D | A | BOTH INTERNATIONAL & INLAND A power-driven vessel making way through the water sounds a fog signal of ________________. | one prolonged blast at intervals of not more than two minutes | two prolonged blasts at intervals of not more than two minutes | one prolonged blast at intervals of not more than one minute | two prolonged blasts at intervals of not more than one minute | |
| 1 | 4191 | D | C | BOTH INTERNATIONAL & INLAND You are on watch in the fog. Your vessel is proceeding at a safe speed when you hear a fog signal ahead of you. The Rules require you to navigate with caution and, if danger of collision exists, _________. | slow to less than 2 knots | stop your engines | reduce to bare steerageway | begin a radar plot | |
| 1 | 4192 | D | B | BOTH INTERNATIONAL & INLAND In restricted visibility, a vessel fishing with nets shall sound at intervals of two minutes ________________. | one prolonged blast | one prolonged followed by two short blasts | one prolonged followed by three short blasts | two prolonged blasts in succession | |
| 1 | 4193 | D | A | BOTH INTERNATIONAL & INLAND A 20-meter sailing vessel underway must exhibit a _______________. | sternlight | combined lantern | red light over a green light at the masthead | All of the above | |
| 1 | 4194 | D | C | BOTH INTERNATIONAL & INLAND At night, you are towing a partly submerged vessel, 20 meters in length and 4 meters in breadth. What lights must you display on the towed vessel? | A white light at the stern | Two white lights side by side at the stern | A white light at the forward end and a white light at the after end | Two red lights in a vertical line at the after end | |
| 1 | 4195 | D | D | BOTH INTERNATIONAL & INLAND All of the following vessels are "restricted in their ability to maneuver" EXCEPT a vessel ___________________. | laying a pipeline | dredging | mineclearing | not under command | |
| 1 | 4196 | D | C | BOTH INTERNATIONAL & INLAND What lights must be shown on a barge being towed astern at night? | A white light at each corner | A white light fore and aft | Sidelights and a sternlight | A sternlight only | |
| 1 | 4197 | D | C | BOTH INTERNATIONAL & INLAND A vessel which is unable to maneuver due to some exceptional circumstance, shall show two red lights in a vertical line and ___________________. | during the day, three balls in a vertical line | during the day, three shapes, the highest and lowest being balls and the middle being a diamond | when making way at night, sidelights and a sternlight | when making way at night, masthead lights, sidelights, and a sternlight | |
| 1 | 4198 | D | A | BOTH INTERNATIONAL & INLAND You are underway and approaching a bend in the channel where vessels approaching from the opposite direction cannot be seen. You should sound ______. | one blast, 4 to 6 seconds in duration | three blasts, 4 to 6 seconds in duration | one continuous blast until you are able to see around the bend | one blast, 8 to 10 seconds in duration | |
| 1 | 4199 | D | D | BOTH INTERNATIONAL & INLAND A vessel which is fishing must show sidelights and a sternlight only when _______________. | anchored | underway | dead in the water | underway and making way | |
| 1 | 4201 | D | B | BOTH INTERNATIONAL & INLAND A power-driven vessel towing astern shall show _____. | two towing lights in a vertical line | a towing light in a vertical line above the sternlight | two towing lights in addition to the sternlight | a small white light in lieu of the sternlight | |
| 1 | 4202 | D | C | BOTH INTERNATIONAL & INLAND You are underway in fog when you hear the following signal: one short blast, one prolonged blast and one short blast in succession. Which of the following would it be? | A sailing vessel underway with the wind abaft the beam | A power-driven vessel underway and making way through the water | A vessel at anchor | A vessel towing | |
| 1 | 4203 | D | B | BOTH INTERNATIONAL & INLAND If you hear the firing of a gun at one minute intervals from another vessel, this indicates that ___________________. | the gun is being used to sound passing signals | the vessel is in distress | all vessels are to clear the area | all is clear and it is safe to pass | |
| 1 | 4204 | D | D | BOTH INTERNATIONAL & INLAND Fog signals, required under the Rules for vessels underway, shall be sounded ______________. | only on the approach of another vessel | only when vessels are in sight of each other | at intervals of not more than one minute | at intervals of not more than two minutes | |
| 1 | 4205 | D | C | BOTH INTERNATIONAL & INLAND A towing vessel is towing two barges astern. The length of the tow from the stern of the tug to the stern of the last barge is 250 meters. The towing vessel is 45 meters in length. How many white masthead lights should be displayed on the tugboat at night? | 1 | 2 | 3 | 4 | |
| 1 | 4206 | D | C | BOTH INTERNATIONAL & INLAND At night, a vessel shall indicate that she is restricted in her ability to maneuver by showing in a vertical line two ___________________. | red lights | red lights and two white lights | red lights with a white light in between | white lights with a red light in between | |
| 1 | 4207 | D | B | BOTH INTERNATIONAL & INLAND Your power-driven vessel is underway when you sight a sailing vessel on your port bow. Which vessel is the "stand-on" vessel? | The sailboat, because it is to port of your vessel | The sailboat, because it is under sail | Your vessel, because it is a power-driven vessel | Your vessel, because it is to starboard of the sailboat | |
| 1 | 4208 | D | A | BOTH INTERNATIONAL & INLAND Five or more short blasts on a vessel's whistle indicates that she is _______________. | in doubt that another vessel is taking sufficient action to avoid a collision | altering course to starboard | altering course to port | the stand-on vessel and will maintain course and speed | |
| 1 | 4209 | D | B | BOTH INTERNATIONAL & INLAND Which statement concerning maneuvering in restricted visibility is FALSE? | A vessel which cannot avoid a close-quarters situation with a vessel forward of her beam shall reduce her speed to bare steerageway. | A vessel which hears a fog signal forward of her beam shall stop her engines. | A vessel which hears a fog signal forward of the beam shall navigate with caution. | If a vessel determines by radar that a close-quarters situation is developing, she shall take avoiding action in ample time. | |
| 1 | 4210 | D | D | BOTH INTERNATIONAL & INLAND A vessel being towed astern shall show at night _________________. | the lights required for a power-driven vessel underway | only the required masthead lights | a sternlight only | sidelights and a sternlight | |
| 1 | 4211 | D | C | BOTH INTERNATIONAL & INLAND In order for a stand-on vessel to take action in a situation, she must determine that the other vessel _____. | is restricted in her ability to maneuver | has sounded the danger signal | is not taking appropriate action | has not changed course since risk of collision was determined | |
| 1 | 4212 | D | C | BOTH INTERNATIONAL & INLAND While underway your vessel approaches a bend in a river where, due to the bank, you cannot see around the bend. You should _________________. | keep to the starboard side of the channel and sound one short blast | sound the danger signal | sound one prolonged blast | slow your vessel to bare steerageway | |
| 1 | 4213 | D | D | BOTH INTERNATIONAL & INLAND Which statement concerning whistle signals is FALSE? | When a pushing vessel and a vessel pushed are connected in a composite unit, the unit sounds the fog signal of a power-driven vessel. | A vessel at anchor may sound one short, one prolonged, and one short blast. | A pilot vessel may sound an identity signal on the whistle. | A vessel engaged in towing in fog shall sound a fog signal at intervals of one minute. | |
| 1 | 4214 | D | D | BOTH INTERNATIONAL & INLAND A sailing vessel of over 20 meters in length underway must show a _____. | red light over a green light at the masthead | white masthead light | combined lantern | sternlight | |
| 1 | 4215 | D | D | BOTH INTERNATIONAL & INLAND An inconspicuous, partly submerged vessel or object being towed, where the length of tow is 100 meters, shall show _______________. | yellow lights at each end | two red lights in a vertical line | a black ball | a diamond shape | |
| 1 | 4216 | D | B | BOTH INTERNATIONAL & INLAND You are approaching a narrow channel. You see a vessel that can only be navigated safely within the channel. You should ___________. | initiate an exchange of passing signals | not cross the channel if you might impede the other vessel | sound the danger signal | hold your course and speed | |
| 1 | 4217 | D | D | BOTH INTERNATIONAL & INLAND A man aboard a vessel, signaling by raising and lowering his outstretched arms to each side, is indicating ___________________. | danger, stay away | all is clear, it is safe to pass | the vessel is anchored | a distress signal | |
| 1 | 4218 | D | A | BOTH INTERNATIONAL & INLAND A vessel showing the day signal shown in DIAGRAM 7 is _________________. | not under command | a dredge underway and dredging | fishing | a hydrographic survey vessel underway | |
| 1 | 4219 | D | D | BOTH INTERNATIONAL & INLAND Your 15-meter vessel is crossing a narrow channel and a large cargo vessel to port is within the channel and crossing your course. You must _________. | hold course and speed | sound the danger signal | initiate an exchange of passing signals | do not cross the channel if you might impede the other vessel | |
| 1 | 4220 | D | B | BOTH INTERNATIONAL & INLAND A vessel towed astern shall show _____________________. | masthead lights | sidelights | a special flashing light | All of the above | |
| 1 | 4221 | D | D | BOTH INTERNATIONAL & INLAND A power-driven vessel making way through the water sounds which fog signal? | Two short blasts every one minute | One short blast every one minute | Two prolonged blasts every two minutes | One prolonged blast every two minutes | |
| 1 | 4222 | D | B | BOTH INTERNATIONAL & INLAND You are towing two barges astern. The length of the tow from the stern of the tug to the stern of the last barge is 150 meters. How many white towing identification lights should be displayed on the tugboat at night? | 1 | 2 | 3 | 4 | |
| 1 | 4223 | D | A | BOTH INTERNATIONAL & INLAND Which vessel may show three lights in a vertical line, the top and bottom being red and the middle being white? | A vessel engaged in diving operations | A pilot vessel | A vessel trawling | All of the above | |
| 1 | 4224 | D | B | BOTH INTERNATIONAL & INLAND A power-driven vessel has on her port side a sailing vessel which is on a collision course. The power-driven vessel is required to ____________. | maintain course and speed | keep clear | sound one blast and turn to starboard | stop her engines | |
| 1 | 4225 | D | A | BOTH INTERNATIONAL & INLAND A single towing light will be carried above a vessel's sternlight _____. | only if she is towing astern | only if the tow exceeds 200 meters | at any time when towing | if the towing vessel is part of a composite unit | |
| 1 | 4226 | D | C | BOTH INTERNATIONAL & INLAND Which dayshape must be shown by a vessel 25 meters in length aground during daylight hours? | One black ball | Two black balls | Three black balls | Four black balls | |
| 1 | 4227 | D | B | BOTH INTERNATIONAL & INLAND An orange flag showing a black circle and square is a _______________. | signal indicating a course change | distress signal | signal of asking to communicate with another vessel | signal indicating danger | |
| 1 | 4228 | D | B | BOTH INTERNATIONAL & INLAND When is a stand-on vessel FIRST allowed by the Rules to take action in order to avoid collision? | When the two vessels are less than half a mile from each other. | When the give-way vessel is not taking appropriate action to avoid collision. | When collision is imminent. | The stand-on vessel is never allowed to take action. | |
| 1 | 4229 | D | B | BOTH INTERNATIONAL & INLAND You are crossing a narrow channel in a 15-meter vessel when you sight a tankship off your port bow coming up the channel. Which statement is TRUE? | Yours is the give-way vessel because it is less than 30 meters long. | You shall not impede the safe passage of the tankship. | The tankship is the stand-on vessel because it is to port of your vessel. | The tankship is the stand-on vessel because it is the larger of the two vessels. | |
| 1 | 4230 | D | C | BOTH INTERNATIONAL & INLAND In restricted visibility, a vessel restricted in her ability to maneuver, at anchor, would sound a fog signal of ___________________. | the rapid ringing of a bell for five seconds every minute | two prolonged and two short blasts every two minutes | one prolonged and two short blasts every two minutes | two prolonged and one short blast every two minutes | |
| 1 | 4231 | D | B | BOTH INTERNATIONAL & INLAND A 15-meter sailing vessel would be required to show _________________. | sidelights, sternlight, and a red light over a green light on the mast | sidelights, and sternlight, but they may be in a combined lantern on the mast | separate sidelights and sternlight | sidelights only | |
| 1 | 4232 | D | C | BOTH INTERNATIONAL & INLAND The use of the signal consisting of five or more short blasts on the ship's whistle _______________. | replaces directional signals | makes the other vessel the give-way vessel | indicates doubt as to the other vessel's action | makes it necessary to slow or stop | |
| 1 | 4233 | D | A | BOTH INTERNATIONAL & INLAND While underway in fog, you hear the fog signal of another vessel ahead. If a risk of collision exists, you must _____________. | slow to bare steerageway and navigate with caution | sound three short blasts and back your engines | stop your engines and navigate with caution | continue on your course and speed until the other vessel is sighted | |
| 1 | 4234 | D | D | BOTH INTERNATIONAL & INLAND What lights, if any, would you exhibit at night if your vessel were broken down and being towed by another vessel? | None | Same lights as for a power-driven vessel underway | A white light forward and a white light aft | The colored sidelights and a white sternlight | |
| 1 | 4235 | D | A | BOTH INTERNATIONAL & INLAND A vessel displaying the dayshapes illustrated in DIAGRAM 7 is _________________. | broken down | fishing | a minesweeper | transferring dangerous cargo | See illustration number(s): DIA 7 |
| 1 | 4236 | D | D | BOTH INTERNATIONAL & INLAND If your vessel is underway in fog and you hear one prolonged and three short blasts, this indicates a _____________________. | vessel not under command | sailing vessel | vessel in distress | vessel being towed | |
| 1 | 4237 | D | C | BOTH INTERNATIONAL & INLAND At night, which lights would you see on a vessel engaged in fishing, other than trawling? | Two red lights, one over the other | A green light over a red light | A red light over a white light | A white light over a red light | |
| 1 | 4239 | D | B | BOTH INTERNATIONAL & INLAND You are on a vessel nearing a bend in the channel where, because of the height of the bank, you cannot see a vessel approaching from the opposite direction. You should sound _________________. | one short blast | one prolonged blast | one long blast | five or more short blasts | |
| 1 | 4240 | D | B | BOTH INTERNATIONAL & INLAND Systems of inbound and outbound lanes to promote the safe flow of vessel traffic in certain areas around the world are known as _______________. | merchant vessel reporting systems | traffic separation schemes | collision avoidance fairways | restricted maneuverability channels | |
| 1 | 4241 | D | A | BOTH INTERNATIONAL & INLAND A tug is towing three manned barges in line in fog. The first vessel of the tow should sound ________________. | no fog signal | one short blast | one prolonged and three short blasts | one prolonged, one short, and one prolonged blast | |
| 1 | 4242 | D | C | BOTH INTERNATIONAL & INLAND All fog signals shall be sounded every two minutes with the exception of a vessel _________. | underway or making way | under sail or under tow | anchored or aground | not under command or restricted in her ability to maneuver | |
| 1 | 4243 | D | A | BOTH INTERNATIONAL & INLAND In reduced visibility, you hear two prolonged blasts of a whistle. This signal is sounded by a __________________. | power-driven vessel dead in the water | sailing vessel on the port tack | vessel not under command | vessel fishing with nets | |
| 1 | 4244 | D | B | BOTH INTERNATIONAL & INLAND A 200-meter vessel restricted in her ability to maneuver, at anchor, will sound a fog signal of ___________________. | a 5 second ringing of a bell forward and a 5 second sounding of a gong aft at intervals of 1 minute | one prolonged followed by two short blasts every 2 minutes | one prolonged followed by three short blasts every minute | one prolonged followed by three short blasts every 2 minutes | |
| 1 | 4245 | D | D | BOTH INTERNATIONAL & INLAND Underway at night, a vessel displaying the lights illustrated in DIAGRAM 62 is ________. | engaged in fishing | mine sweeping | a pilot boat | under sail | |
| 1 | 4247 | D | D | BOTH INTERNATIONAL & INLAND What dayshape is to be shown by a vessel aground? | A cylinder | Two cones with their apexes together | Two black balls in a vertical line | Three black balls in a vertical line | |
| 1 | 4248 | D | D | BOTH INTERNATIONAL & INLAND What is NOT a distress signal? | Red flares or red rockets | Continuous sounding of fog signalling apparatus | International Code Flags "November" and "Charlie" | Basket hanging in the rigging | |
| 1 | 4249 | D | A | BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning a vessel equipped with operational radar? | She must use this equipment to obtain early warning of risk of collision. | The use of a radar excuses a vessel from the need of a look-out. | The radar equipment is only required to be used in restricted visibility. | The safe speed of such a vessel will likely be greater than that of vessels without radar. | |
| 1 | 4250 | D | A | BOTH INTERNATIONAL & INLAND A vessel displaying the lights illustrated in DIAGRAM 60 is _____. | towing | being towed | broken down | fishing | |
| 1 | 4251 | D | C | BOTH INTERNATIONAL & INLAND At night, if you see a vessel ahead displaying the lights shown in DIAGRAM 70, you should ___________________. | provide assistance as the vessel is in distress | stay clear as the vessel is transferring dangerous cargo | stay clear as the vessel is fishing | change course to the right as the vessel is crossing your bow | |
| 1 | 4253 | D | D | BOTH INTERNATIONAL & INLAND A pilot vessel on pilotage duty shall show identity lights _____________. | at any time while underway | while at anchor | while alongside a vessel | All of the above | |
| 1 | 4254 | D | D | BOTH INTERNATIONAL & INLAND You are underway in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must _________. | stop your engines | sound two prolonged blasts of the whistle | sound the danger signal | slow to bare steerageway | |
| 1 | 4255 | D | C | BOTH INTERNATIONAL & INLAND A stand-on vessel in acrossing situation is allowed to take action when _____. | on a collision course | the vessels will pass within one mile | it becomes apparent to her that the give-way vessel is not taking appropriate action | the relative speed of the vessels indicates collision in less than six minutes | |
| 1 | 4256 | D | A | BOTH INTERNATIONAL & INLAND Traffic separation schemes established by the International Maritime Organization __________________. | provide inbound and outbound lanes to promote the safe flow of vessel traffic | provide vessel reporting systems to assist in search and rescue in the event of a vessel casualty | provide routing and vessel scheduling procedures to reduce shipping delays | prohibit vessels carrying hazardous cargos from entering waters that are environmentally sensitive | |
| 1 | 4257 | D | D | BOTH INTERNATIONAL & INLAND Which vessel is required to sound a fog signal of one prolonged followed by two short blasts? | A vessel not under command | A sailing vessel, underway | A vessel restricted in its ability to maneuver, at anchor | All of the above | |
| 1 | 4258 | D | C | BOTH INTERNATIONAL & INLAND At night, a broken down vessel being towed would show the same lights as _________________. | a power-driven vessel underway | the towing vessel | a barge | a vessel at anchor | |
| 1 | 4259 | D | C | BOTH INTERNATIONAL & INLAND What is the optional whistle signal which may be sounded by a vessel at anchor? | Two prolonged followed by one short blast | One short followed by two prolonged blasts | One short, one prolonged, followed by one short blast | Four short blasts | |
| 1 | 4260 | D | B | BOTH INTERNATIONAL & INLAND The minimum length of a power-driven vessel that must show forward and after masthead lights is _________________. | 30 meters | 50 meters | 75 meters | 100 meters | |
| 1 | 4261 | D | D | BOTH INTERNATIONAL & INLAND What light(s), if any, would you show at night if your vessel was broken down and being towed by another vessel? | None | Same lights as for a power-driven vessel underway | A white light forward and a white light aft | The colored sidelights and a white sternlight | |
| 1 | 4262 | D | D | BOTH INTERNATIONAL & INLAND A vessel not under command making way at night would show _________________. | two all-round red lights in a vertical line | anchor lights and sidelights | two all-round white lights in a vertical line, sidelights and a sternlight | two all-round red lights in a vertical line, sidelights, and a sternlight | |
| 1 | 4263 | D | A | BOTH INTERNATIONAL & INLAND In a dense fog, you hear a whistle signal of one prolonged blast followed by three short blasts. This signal is sounded by a ____________. | manned vessel being towed | fishing vessel underway trawling | pilot vessel underway making a special signal | vessel not under command | |
| 1 | 4265 | D | C | BOTH INTERNATIONAL & INLAND While underway and pushing a barge ahead, your vessel enters a heavy rain storm. You should sound _________________. | a prolonged blast every two minutes | two prolonged blasts every two minutes | one prolonged and two short blasts every two minutes | one prolonged and three short blasts every two minutes | |
| 1 | 4266 | D | D | BOTH INTERNATIONAL & INLAND On open waters, a power-driven vessel shall keep out of the way of a ___________________. | vessel on her port side that is crossing her course | vessel that is overtaking her | seaplane on the water | sailing vessel | |
| 1 | 4267 | D | C | BOTH INTERNATIONAL & INLAND You are overtaking a vessel at night and you see a yellow light showing above the sternlight of the overtaken vessel. The overtaken vessel is _________________. | underway and dredging | pushing ahead or towing alongside | towing astern | a pilot vessel | |
| 1 | 4268 | D | D | BOTH INTERNATIONAL & INLAND Your vessel is at anchor infog. The fog signal of another vessel, apparently underway,has been growing louder and the danger of collision appearsto exist. In addition to your fog signal, what signal maybe used to indicate your presence? | No signal other than your fog signal may be used. | One prolonged, one short, and one prolonged whistle blast | One prolonged followed by two short whistle blasts | One short, one prolonged, and one short whistle blast | |
| 1 | 4269 | D | A | BOTH INTERNATIONAL & INLAND All of the following are distress signals under the Rules EXCEPT ___________________. | International Code Signal "AA" | orange-colored smoke | red flares | the repeated raising and lowering of outstretched arms | |
| 1 | 4270 | D | C | BOTH INTERNATIONAL & INLAND A vessel displaying the lights illustrated in DIAGRAM 70 is a ________________. | pilot boat | sailboat | fishing vessel | motorboat | |
| 1 | 4271 | D | C | BOTH INTERNATIONAL & INLAND A tug is towing three manned barges in line in fog. The third vessel of the tow should sound _________________. | no fog signal | one prolonged and two short blasts | one prolonged and three short blasts | one prolonged, one short and one prolonged blast | |
| 1 | 4272 | D | B | BOTH INTERNATIONAL & INLAND A power-driven vessel,when towing another vessel astern shall show the light(s)in Diagram ___________. | 75 | 60 | 54 | 46 | |
| 1 | 4273 | D | C | BOTH INTERNATIONAL & INLAND Which vessel is NOT classified as "restricted in her ability to maneuver"? | A vessel picking up a navigation mark | A vessel transferring cargo while underway | A vessel whose anchor is fouled | A vessel in a towing operation that restricts the ability of the vessel and her tow to change their course | |
| 1 | 4274 | D | D | BOTH INTERNATIONAL & INLAND During the day, a vessel picking up a submarine cable shall carry _________________________. | three shapes, the highest and lowest shall be red balls, and the middle shall be a white diamond | two black balls | three shapes; the highest and lowest shall be black balls, and the middle shall be a red diamond | three shapes; the highest and lowest shall be black balls and the middle shall be a black diamond | |
| 1 | 4275 | D | C | BOTH INTERNATIONAL & INLAND While underway in fog, you hear a prolonged blast from another vessel. This signal indicates a _______________. | sailboat underway | power-driven vessel underway, towing | power-driven vessel underway | vessel being towed | |
| 1 | 4276 | D | B | BOTH INTERNATIONAL & INLAND While underway your vessel enters fog. You stop your engines and the vessel is dead in the water. Which fog signal should you sound? | One prolonged blast every two minutes | Two prolonged blasts every two minutes | Three short blasts every two minutes | One prolonged and three short blasts every two minutes | |
| 1 | 4277 | D | A | BOTH INTERNATIONAL & INLAND You are underway in a fog when you hear a whistle signal of one prolonged blast followed by two short blasts. This signal could indicate all of the following EXCEPT a vessel _________________________. | being towed | not under command | fishing with trawls | towing astern | |
| 1 | 4278 | D | D | BOTH INTERNATIONAL & INLAND A light signal consisting of three flashes means _________________. | "I am in doubt as to your actions" | "My engines are full speed astern" | "I desire to overtake you" | "I am operating astern propulsion" | |
| 1 | 4279 | D | B | BOTH INTERNATIONAL & INLAND You are watching another vesselapproach and her compass bearing is not changing. This means that _____. | you are the stand-on vessel | a risk of collision exists | a special circumstances situation exists | the other vessel is dead in the water | |
| 1 | 4280 | D | A | BOTH INTERNATIONAL & INLAND Vessels I and II are underway as shown in DIAGRAM 33. Vessel I is a sailing vessel with the wind dead aft. Vessel II is a power-driven vessel trawling. Which statement is TRUE? | Vessel I is to keep clear because the other vessel is fishing. | Vessel II is to keep clear because she is a power-driven vessel. | Vessel II is to keep clear because the other vessel is to its starboard. | Both vessels are to take action to stay clear of each other. |