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.


9: INLAND ONLY Which statement is TRUE concerning narrow channels?


36: INLAND ONLY Which type of vessel is NOT mentioned in the Inland Navigation Rules?


114: INLAND ONLY At night, what lights are required on barges moored in a group formation more than two barges wide?


208: INTERNATIONAL ONLY A single vessel being towed alongside shall show __________.

    N a. one all-round white light
    Y b. sidelights and a stern light
    N c. only the outboard sidelight and a stern light
    N d. a masthead light, sidelights, and a stern light

221: INLAND ONLY A barge more than 50 meters long would be required to show how many white anchor lights when anchored in a Secretary approved "special anchorage area"?

    N a. None
    N b. 3
    Y c. 2
    N d. 1

243: INTERNATIONAL ONLY You are on vessel "A" as shown. Vessel "B" sounds two short blasts. You should __________. (DIAGRAM 32 )

    N a. sound two prolonged blasts followed by two short blasts
    Y b. not answer the whistle signal from vessel "B"
    N c. sound two short blasts and maintain course and speed
    N d. sound one prolonged, one short, one prolonged and one short blasts

252: INTERNATIONAL ONLY Vessels "A" and "B" are meeting on a river as shown and will pass 1/4 mile apart. Which action should the vessels take? (DIAGRAM 41 )

    Y a. The vessels should continue on course and pass without sounding any whistle signals.
    N b. The vessels should exchange two blast whistle signals and pass starboard to starboard.
    N c. The vessels should exchange one blast whistle signals and pass starboard to starboard.
    N d. The vessel with the tow should initiate the whistle signals.

4010: BOTH INTERNATIONAL & INLAND If your vessel is underway in fog and you hear one prolonged and three short blasts, this is a __________.

    N a. vessel not under command
    N b. sailing vessel
    Y c. vessel being towed (manned)
    N d. vessel being towed (unmanned)

4107: 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 __________.

    N a. maintain course and speed
    Y b. keep clear, passing at a safe distance
    N c. sound one blast and turn to starboard
    N d. stop her engines

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

4129: BOTH INTERNATIONAL & INLAND Which vessel MUST show two masthead lights in a vertical line?

    Y a. A power-driven vessel less than 50 meters in length with a 20-meter tow
    N b. A sailing vessel towing a small vessel astern
    N c. A vessel not under command
    N d. A vessel engaged in dredging

4152: BOTH INTERNATIONAL & INLAND A power-driven vessel with a 150-meter stern tow shall display __________.

    N a. three masthead lights in a vertical line
    Y b. a towing light above the stern light
    N c. two towing lights in a vertical line
    N d. a red light over a white light at the masthead

4300: BOTH INTERNATIONAL & INLAND At night, a vessel displaying the light shown is __________. (DIAGRAM 46 )

    Y a. sailing
    N b. fishing and making way
    N c. a pilot boat making way
    N d. fishing and anchored

4332: BOTH INTERNATIONAL & INLAND You are the stand-on vessel in a crossing situation. You may hold your course and speed until __________.

    N a. the other vessel takes necessary action
    N b. the other vessel gets to within half a mile of your vessel
    Y c. action by the give-way vessel alone will not prevent collision
    N d. the other vessel gets to within a quarter mile of your vessel

4399: BOTH INTERNATIONAL & INLAND Which vessel would display a cone, apex downward?

    N a. A fishing vessel with outlying gear
    Y b. A vessel proceeding under sail and machinery
    N c. A vessel engaged in diving operations
    N d. A vessel being towed

4418: BOTH INTERNATIONAL & INLAND When two vessels are in immediate danger of collision, the stand-on vessel must __________.

    N a. abandon ship
    Y b. assist in taking whatever action is necessary to avoid collision
    N c. hold course and speed
    N d. sound a distress signal

4434: BOTH INTERNATIONAL & INLAND Which statement correctly applies to a situation where a sailing vessel is overtaking a power-driven vessel?

    N a. The power-driven vessel must keep out of the way of the sailing vessel.
    N b. A "special circumstance" situation exists.
    Y c. The sailing vessel must keep out of the way of the power- driven vessel.
    N d. The vessel which has the other vessel to the right must keep out of the way.

4443: BOTH INTERNATIONAL & INLAND Which statement is TRUE in an overtaking situation?

    N a. An overtaking situation exists when one vessel is approaching another vessel from anywhere abaft the beam.
    N b. It is the duty of the vessel being overtaken to get out of the way.
    Y c. Any later change of bearing between the two vessels shall not make the overtaking vessel a crossing vessel.
    N d. All of the above

4468: BOTH INTERNATIONAL & INLAND You see a vessel displaying three lights in a vertical line. The highest and lowest lights are red and the middle light is white. She is also showing a white light at the stern, which is lower than the forward light. It could be a __________.

    Y a. survey vessel
    N b. vessel not under command
    N c. vessel aground
    N d. pilot vessel with port side to you

4490: BOTH INTERNATIONAL & INLAND Which vessel would be required to show a white light from a lantern exhibited in sufficient time to prevent collision?

    N a. A 9-meter sailing vessel
    Y b. A rowboat
    N c. A 6-meter motorboat
    N d. A small vessel fishing

4559: BOTH INTERNATIONAL & INLAND A vessel aground at night is required to show two red lights in a vertical line as well as __________.

    N a. not under command lights
    N b. restricted in her ability to maneuver lights
    Y c. anchor lights
    N d. sidelights and a stern light

4634: BOTH INTERNATIONAL & INLAND Your tug is underway at night and NOT towing. What light(s) should your vessel show aft to other vessels coming up from astern?

    Y a. One white light
    N b. Two white lights
    N c. One white light and one yellow light
    N d. One white light and two yellow lights

4643: BOTH INTERNATIONAL & INLAND A sailing vessel underway at night may show __________.

    Y a. a red light over a green light at the masthead
    N b. a green light over a red light at the masthead
    N c. two white lights in a vertical line at the stern
    N d. an all-round white light at the bow

4704: BOTH INTERNATIONAL & INLAND The masthead light may be located at other than the fore and aft centerline on a vessel __________.

    N a. less than 50 meters in length
    N b. less than 20 meters in length
    Y c. of special construction
    N d. engaged in trolling

4718: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown could be a vessel __________. (DIAGRAM 56 )

    N a. fishing at anchor
    Y b. dredging while underway
    N c. transferring dangerous cargo at a berth
    N d. restricted in her ability to maneuver, underway but not making way

4862: BOTH INTERNATIONAL & INLAND You are underway in thick fog. You have not determined if risk of collision exists. Which statement is TRUE?

    Y a. Your speed must be reduced to bare steerageway.
    N b. A look-out is not required if the radar is on.
    N c. Fog signals are only required when a vessel is detected by radar.
    N d. The radar should always be kept on a short-range scale.

6000: BOTH INTERNATIONAL & INLAND While underway in fog, you hear a vessel ahead sound two prolonged blasts on the whistle. You should __________.

    N a. sound two blasts and change course to the left
    Y b. sound only fog signals until the other vessel is sighted
    N c. sound whistle signals only if you change course
    N d. not sound any whistle signals until the other vessel is sighted

8041: INTERNATIONAL ONLY Vessel "A" is overtaking vessel "B" on open waters and will pass without changing course. Vessel "A" __________.

    N a. should sound two short blasts
    N b. should sound the danger signal
    N c. should sound one long blast
    Y d. will not sound any whistle signals

8078: INTERNATIONAL ONLY Vessel "A" is overtaking vessel "B" on open waters as shown and will pass without changing course. Vessel "A" __________. (DIAGRAM 17 )

    Y a. need not sound any whistle signals
    N b. should sound two short blasts
    N c. should sound the danger signal
    N d. should sound one long blast

8082: INTERNATIONAL ONLY Which statement is TRUE concerning light signals?

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