USCG Rules of the Road: Master's License

This is an interactive test. Read each question and select the proper answer by clicking on the appropriate answer. If a "Y" appears, your choice is correct. If a "N" appears, more study may be in order.


8: 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?


19: 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?


61: 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 __________.


93: INLAND ONLY While underway in a harbor you hear a vessel sound a prolonged blast. This signal indicates that this vessel __________.

    N a. desires to overtake your vessel
    N b. is at anchor
    N c. is backing her engines
    Y d. is moving from a dock

105: 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 __________.

    N a. one short blast
    Y b. two short blasts
    N c. two prolonged blasts followed by one short blast
    N d. two prolonged blasts followed by two short blasts

320: BOTH INTERNATIONAL & INLAND Which dayshape(s) would be displayed by the vessel engaged in the operation indicated by the lights shown. (DIAGRAM 82 )

    N a. a cylinder
    N b. a ball, a diamond and another ball
    Y c. two cones with apexes together
    N d. a diamond

393: BOTH INTERNATIONAL & INLAND You see ONLY the light shown. This could be a __________. (DIAGRAM 80 )

    Y a. sailing vessel
    N b. vessel on pilotage duty
    N c. vessel engaged in fishing
    N d. power-driven vessel

4099: BOTH INTERNATIONAL & INLAND During the day, a dredge will indicate the side on which it is safe to pass by displaying __________.

    N a. two balls in a vertical line
    Y b. two diamonds in a vertical line
    N c. a single black ball
    N d. no shape is shown during the day

4116: BOTH INTERNATIONAL & INLAND The towing light is a(n) __________.

    N a. flashing amber light
    Y b. yellow light with the same characteristics as the stern light
    N c. all-round yellow light
    N d. yellow light with the same characteristics as the masthead light

4157: BOTH INTERNATIONAL & INLAND Which vessel may exhibit identifying lights when not actually engaged in her occupation?

    N a. A trawler
    N b. A fishing vessel
    N c. A tug
    Y d. None of the above

4201: BOTH INTERNATIONAL & INLAND A power-driven vessel towing astern shall show __________.

    N a. two towing lights in a vertical line
    Y b. a towing light in a vertical line above the stern light
    N c. two towing lights in addition to the stern light
    N d. a small white light in lieu of the stern light

4217: BOTH INTERNATIONAL & INLAND A man aboard a vessel, signaling by raising and lowering his outstretched arms to each side, is indicating __________.

    N a. danger, stay away
    N b. all is clear, it is safe to pass
    N c. the vessel is anchored
    Y d. a distress signal

4236: BOTH INTERNATIONAL & INLAND If your vessel is underway in fog and you hear one prolonged and three short blasts, this indicates a __________.

    N a. vessel not under command
    N b. sailing vessel
    N c. vessel in distress
    Y d. vessel being towed

4239: 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 __________.

    N a. one short blast
    Y b. one prolonged blast
    N c. one long blast
    N d. five or more short blasts

4257: BOTH INTERNATIONAL & INLAND Which vessel is required to sound a fog signal of one prolonged followed by two short blasts?

    N a. A vessel not under command
    N b. A sailing vessel, underway
    N c. A vessel restricted in its ability to maneuver, at anchor
    Y d. All of the above

4266: BOTH INTERNATIONAL & INLAND On open waters, a power-driven vessel shall keep out of the way of a __________.

    N a. vessel on her port side that is crossing her course
    N b. vessel that is overtaking her
    N c. seaplane on the water
    Y d. sailing vessel

4347: BOTH INTERNATIONAL & INLAND To determine if risk of collision exists, a vessel which is fitted with radar must use __________.

    N a. radar scanning
    N b. radar plotting
    N c. compass bearings
    Y d. All of the above

4376: BOTH INTERNATIONAL & INLAND A power-driven vessel "not under command" at night must show her sidelights when __________.

    Y a. making headway
    N b. making no headway
    N c. moored to a buoy
    N d. at anchor

4421: BOTH INTERNATIONAL & INLAND You see a red sidelight bearing NW (315°). That vessel may be heading __________.

    Y a. south (180°)
    N b. east (090°)
    N c. northeast (045°)
    N d. west (270°)

4479: BOTH INTERNATIONAL & INLAND What signal indicates doubt that sufficient action is being taken by another vessel to avoid collision?

    Y a. Five short and rapid blasts of the whistle
    N b. Three long blasts of the whistle
    N c. Three short and rapid blasts of the whistle
    N d. One prolonged blast followed by three short blasts of the whistle

4483: BOTH INTERNATIONAL & INLAND A vessel restricted in her ability to maneuver shall __________.

    Y a. turn off her sidelights when not making way
    N b. when operating in restricted visibility, sound a whistle signal of two prolonged and one short blast
    N c. show a day-shape of two diamonds in a vertical line
    N d. keep out of the way of a vessel engaged in fishing

4551: BOTH INTERNATIONAL & INLAND The Rules state that a vessel overtaking another vessel is relieved of her duty to keep clear when __________.

    N a. she is forward of the other vessel's beam
    N b. the overtaking situation becomes a crossing situation
    Y c. she is past and clear of the other vessel
    N d. the other vessel is no longer in sight

4610: BOTH INTERNATIONAL & INLAND You are aboard the give-way vessel in a crossing situation. What should you NOT do in obeying the Rules?

    Y a. Cross ahead of the stand-on vessel
    N b. Make a large course change to starboard
    N c. Slow your vessel
    N d. Back your vessel

4678: BOTH INTERNATIONAL & INLAND Which is a light signal authorized by the Secretary of the Navy as an additional navigational light for a ship of war?

    Y a. Intermittent flashing amber (yellow) beacon for submarines
    N b. Green masthead and yardarm lights indicating mine clearance operations
    N c. Red-white-red lights in a vertical line for a carrier, launching aircraft
    N d. Yellow flares indicating torpedo firing exercises

4692: BOTH INTERNATIONAL & INLAND What is NOT a vessel "restricted in her ability to maneuver"?

    N a. A vessel laying engaged in laying submarine cable
    N b. A vessel towing with limited maneuverability due to a large unwieldy tow
    Y c. A deep-draft vessel that can only navigate in a dredged channel
    N d. A towing vessel underway with a fuel barge alongside and taking on fuel

4826: BOTH INTERNATIONAL & INLAND According to the Navigation Rules, you may depart from the Rules when __________.

    Y a. you do so to avoid immediate danger
    N b. no vessels are visible on radar
    N c. you are in a close quarters situation
    N d. out of sight of land

4853: BOTH INTERNATIONAL & INLAND You are approaching another vessel on crossing courses. She is about one mile distant and is on your starboard bow. You believe she will cross ahead of you but she sounds a whistle signal of five short blasts. You should __________.

    N a. answer the signal and hold course and speed
    N b. reduce speed slightly
    N c. initiate a passing signal that will allow for a half mile clearance
    Y d. make a large course change, and slow down if necessary

4871: 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?

    Y a. Your vessel is obligated to stay out of the way.
    N b. The other vessel must give way, since your vessel is stopped.
    N c. You should be showing the lights or shapes for a vessel not under command.
    N d. You should be showing the lights or shapes for a vessel restricted in her ability to maneuver.

8074: INTERNATIONAL ONLY Two prolonged blasts followed by one short blast on the whistle is a signal which would be sounded by a vessel __________.

    Y a. overtaking another in a narrow channel
    N b. anchored
    N c. engaged in mineclearance
    N d. engaged in fishing

8075: INTERNATIONAL ONLY You intend to overtake a vessel in a narrow channel, and you intend to pass along the vessel's port side. How should you signal your intention?

    N a. Two short blasts followed by two prolonged blasts
    Y b. Two prolonged followed by two short blasts
    N c. Two prolonged blasts only
    N d. Two short blasts only