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.


53: INLAND ONLY You are on vessel "A" and vessel "B" desires to overtake you on the starboard side as shown. After the vessels have exchanged one blast signals you should __________. (DIAGRAM 38 )


97: INLAND ONLY Which statement is TRUE concerning a passing agreement made by radiotelephone?


100: INLAND ONLY Only law enforcement vessels are permitted to show __________.


106: 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 __________.

    N a. pass the other vessel along her starboard side
    N b. sound five short and rapid blasts and pass along her starboard side
    Y c. not overtake the other vessel until both vessels exchange the same passing signal
    N d. not overtake the other vessel until she sounds another five short and rapid blast signal

212: BOTH INTERNATIONAL & INLAND You see the display of lights shown. This indicates a vessel __________. (DIAGRAM 54 )

    Y a. engaged in fishing, making way
    N b. engaged in fishing, at anchor
    N c. engaged in trawling, making way
    N d. on pilotage duty, making way

270: INLAND ONLY Two power-driven vessels are meeting in a narrow channel as shown. Which statement is TRUE? (DIAGRAM 37 )

    N a. Whistle signals must be exchanged in all situations when passing within one half mile of each other.
    Y b. If agreement is reached by radiotelephone whistle signals are optional.
    N c. If agreement is reached by radiotelephone whistle signals must still be exchanged.
    N d. None of the above

277: INLAND ONLY While underway you sight the lights shown with the yellow lights flashing. The lights displayed should be __________. (DIAGRAM 81 )

    Y a. visible at night and during periods of restricted visibility
    N b. visible for at least one mile
    N c. more than 50 meters apart
    N d. flashing at intervals of 120 flashes per minute

296: BOTH INTERNATIONAL & INLAND The display of lights shown could represent a __________. (DIAGRAM 48 )

    N a. submarine on the surface
    N b. vessel constrained by her draft
    Y c. tug and a barge being towed astern
    N d. vessel not under command

343: INLAND ONLY Two power-driven vessels are crossing within a half a mile of each other as shown. Vessel "A" sounds one short blast on the whistle. This signal means __________. (DIAGRAM 42 )

    N a. "I intend to leave you on my starboard side"
    Y b. "I intend to leave you on my port side"
    N c. "I am altering my course to starboard"
    N d. None of the above

351: INTERNATIONAL ONLY Two power-driven vessels are crossing within one half mile of each other as shown. Vessel "A" sounds one short blast of the whistle. This signal means __________. (DIAGRAM 42 )

    Y a. "I am altering my course to starboard"
    N b. "I am operating astern propulsion"
    N c. "I am altering my course to port"
    N d. None of the above

380: INLAND ONLY While underway you sight the lights shown with the yellow lights flashing. The lights displayed are from a __________. (DIAGRAM 81 )

    Y a. dredge pipeline
    N b. mine clearance vessel
    N c. vessel aground
    N d. vessel not under command

4011: BOTH INTERNATIONAL & INLAND A pilot vessel on pilotage duty at night will show sidelights and a stern light __________.

    N a. when at anchor
    N b. only when making way
    Y c. at any time when underway
    N d. only when the identifying lights are not being shown

4012: BOTH INTERNATIONAL & INLAND A vessel which displays the day signal shown may be engaged in __________. (DIAGRAM 6 )

    Y a. submarine cable laying
    N b. pilotage duty
    N c. fishing
    N d. mineclearance

4057: BOTH INTERNATIONAL & INLAND You see a vessel displaying the code flag "LIMA" below which is a red ball. The vessel is __________.

    N a. trolling
    N b. getting ready to receive aircraft
    N c. aground
    Y d. in distress

4063: 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 __________.

    N a. engaged in fishing in a traffic lane
    Y b. servicing a submarine cable
    N c. towing another
    N d. engaged on pilotage duty

4080: 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 __________.

    Y a. not under command
    N b. being towed
    N c. aground
    N d. All of the above

4154: BOTH INTERNATIONAL & INLAND Which vessel, when anchored at night, is NOT required to show anchor lights?

    N a. A power-driven vessel
    N b. A vessel engaged on pilotage duty
    Y c. A vessel dredging
    N d. A vessel restricted in her ability to maneuver

4188: BOTH INTERNATIONAL & INLAND You are at anchor in fog on a 120-meter power-driven vessel. You hear the fog signal of a vessel approaching off your port bow. You may sound __________.

    N a. one prolonged, one short and one prolonged
    N b. two short blasts
    Y c. one short, one prolonged, and one short blast
    N d. one prolonged blast

4198: 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 __________.

    Y a. one blast, 4 to 6 seconds in duration
    N b. three blasts, 4 to 6 seconds in duration
    N c. one continuous blast until you are able to see around the bend
    N d. one blast, 8 to 10 seconds in duration

4202: 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?

    N a. A sailing vessel underway with the wind abaft the beam
    N b. A power-driven vessel underway and making way through the water
    Y c. A vessel at anchor
    N d. A vessel towing

4269: BOTH INTERNATIONAL & INLAND All of the following are distress signals under the Rules EXCEPT __________.

    Y a. International Code Signal "AA"
    N b. orange-colored smoke
    N c. red flares
    N d. the repeated raising and lowering of outstretched arms

4304: BOTH INTERNATIONAL & INLAND A vessel being towed will show __________.

    N a. a forward masthead light
    Y b. sidelights and a stern light
    N c. a towing light
    N d. All of the above

4451: BOTH INTERNATIONAL & INLAND Every vessel should at all times proceed at a "safe speed". "Safe speed" is defined as that speed where __________.

    N a. you can stop within your visibility range
    Y b. you can take proper and effective action to avoid collision
    N c. you are traveling slower than surrounding vessels
    N d. no wake comes from your vessel

4570: BOTH INTERNATIONAL & INLAND Which signal may at some time be exhibited by a vessel trawling?

    N a. Two white lights in a vertical line
    N b. A white light over a red light in a vertical line
    N c. Two red lights in a vertical line
    Y d. All of the above

4682: BOTH INTERNATIONAL & INLAND A vessel may exhibit lights other than those prescribed by the Rules as long as the additional lights __________.

    N a. do not interfere with the keeping of a proper look-out
    N b. do not impair the visibility or distinctive character of the prescribed lights
    N c. cannot be mistaken for the lights specified elsewhere in the Rules
    Y d. All of the above

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

4835: BOTH INTERNATIONAL & INLAND The word "vessel", in the Rules, includes __________.

    N a. a barge permanently affixed to the shore
    Y b. nondisplacement craft
    N c. a drilling unit attached to the Outer Continental Shelf
    N d. All of the above

8031: INTERNATIONAL ONLY Which statement(s) is(are) TRUE concerning light signals?

    N a. The time between flashes shall be about five seconds.
    Y b. The time between successive signals shall be not less than ten seconds.
    N c. The light signals are to be used when not using sound signals.
    N d. All of the above

8085: INTERNATIONAL ONLY At night, a power-driven vessel less than 7 meters in length, with a maximum speed which does not exceed 7 knots, MUST show when underway at least __________.

    Y a. one white 360° light
    N b. a white light on the near approach of another vessel
    N c. sidelights and a stern light
    N d. the lights required of a vessel less than 12 meters in length

8090: BOTH INTERNATIONAL & INLAND A towing light is ____________ .

    N a. shown below the stern light
    N b. white in color
    N c. displayed at the masthead
    Y d. a yellow light having the same characteristics as the stern light