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?


54: 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"?


89: 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 __________.


137: INLAND ONLY A vessel displaying an alternating red and yellow light is __________.

    N a. in distress
    N b. enforcing the law
    Y c. engaged in public safety activities
    N d. restricted in its ability to maneuver

239: INLAND ONLY Vessels "A" and "B" are meeting on a river as shown and will pass 1/4 mile apart. Which statement is TRUE? (DIAGRAM 29 )

    N a. Both vessels should continue on course and pass without sounding any whistle signals.
    N b. The vessels must exchange two blast whistle signals and pass port to port.
    N c. The vessels must exchange one blast whistle signals and pass starboard to starboard
    Y d. The vessels may reach agreement by radiotelephone and sound no whistle signal.

273: INLAND ONLY While underway you sight the lights shown with the yellow lights flashing, you should __________. (DIAGRAM 81 )

    N a. wait until the vessel ahead crosses your bow
    N b. stop until the red lights turn green
    N c. proceed leaving all the lights on your starboard side
    Y d. pass between the two sets of vertical red lights

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

    N a. seaplane
    N b. minesweeper
    Y c. dredge pipeline
    N d. vessel not under command

326: BOTH INTERNATIONAL & INLAND Diagram "A" shows the arc of visibility of a __________. (DIAGRAM 23 )

    N a. white masthead light
    Y b. red sidelight
    N c. green sidelight
    N d. stern light

348: 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. Vessel "B" should __________. (DIAGRAM 42 )

    Y a. maintain course and speed
    N b. alter course to the right or slowdown
    N c. sound one short blast and maintain course and speed
    N d. sound the danger signal and slow to moderate speed

4034: BOTH INTERNATIONAL & INLAND A vessel "restricted in her ability to maneuver" is one which __________.

    Y a. from the nature of her work is unable to maneuver as required by the rules
    N b. through some exceptional circumstance is unable to maneuver as required by the rules
    N c. due to adverse weather conditions is unable to maneuver as required by the rules
    N d. has lost steering and is unable to maneuver

4048: BOTH INTERNATIONAL & INLAND If it becomes necessary for a stand-on vessel to take action to avoid collision, she shall NOT, if possible, __________.

    N a. decrease speed
    N b. increase speed
    Y c. turn to port for a vessel on her own port side
    N d. turn to starboard for a vessel on her own port side

4065: 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 __________.

    N a. aground
    Y b. more than 100 meters in length, at anchor
    N c. fishing while making no way through the water
    N d. fishing in company with another vessel

4078: BOTH INTERNATIONAL & INLAND You are making headway in fog and hear a fog signal of two prolonged blasts on your starboard quarter. You should __________.

    N a. stop your vessel
    N b. change course to the left
    N c. change course to the right
    Y d. hold your course and speed

4127: BOTH INTERNATIONAL & INLAND A vessel will NOT show sidelights when __________.

    N a. underway but not making way
    N b. making way, not under command
    Y c. not under command, not making way
    N d. trolling underway

4211: BOTH INTERNATIONAL & INLAND In order for a stand-on vessel to take action in a situation, she must determine that the other vessel __________.

    N a. is restricted in her ability to maneuver
    N b. has sounded the danger signal
    Y c. is not taking appropriate action
    N d. has not changed course since risk of collision was determined

4221: BOTH INTERNATIONAL & INLAND A power-driven vessel making way through the water sounds which fog signal?

    N a. Two short blasts every one minute
    N b. One short blast every one minute
    N c. Two prolonged blasts every two minutes
    Y d. One prolonged blast every two minutes

4334: BOTH INTERNATIONAL & INLAND In narrow channels, vessels of less than what length shall not impede the safe passage of vessels which can navigate only inside that channel?

    Y a. 20 meters
    N b. 50 meters
    N c. 65 meters
    N d. 100 meters

4400: BOTH INTERNATIONAL & INLAND When action to avoid a close quarters situation is taken, a course change alone may be the most effective action provided that __________.

    N a. it is done in a succession of small course changes
    N b. it is NOT done too early
    Y c. it is a large course change
    N d. the course change is to starboard

4402: BOTH INTERNATIONAL & INLAND A vessel at anchor will show a __________.

    Y a. ball
    N b. cone
    N c. cylinder
    N d. double cone, apexes together

4512: BOTH INTERNATIONAL & INLAND Which vessel must sound her fog signal at intervals not to exceed one minute?

    N a. A power-driven vessel underway, not making way
    N b. A vessel constrained by her draft
    N c. A vessel engaged in fishing, at anchor
    Y d. A vessel aground

4543: BOTH INTERNATIONAL & INLAND Which situation would be a "special circumstance" under the Rules?

    N a. Vessel at anchor
    Y b. More than two vessels meeting
    N c. Speed in fog
    N d. Two vessels crossing

4549: BOTH INTERNATIONAL & INLAND Two sailing vessels are approaching each other as shown. Which statement is correct? (DIAGRAM 3 )

    N a. Vessel "I" should stand on because she has the wind on her port side.
    Y b. Vessel "II" should stand on because she has the wind on her starboard side.
    N c. Neither vessel is the stand-on vessel because they are meeting head-on.
    N d. Vessel "I" should stand on because she is close-hauled.

4578: BOTH INTERNATIONAL & INLAND A "short blast" on the whistle has a duration of __________.

    Y a. 1 second
    N b. 4 to 6 seconds
    N c. 8 to 12 seconds
    N d. 12 to 15 seconds

4616: BOTH INTERNATIONAL & INLAND If your vessel is the stand-on vessel in a crossing situation __________.

    Y a. you must keep your course and speed
    N b. you may change course and speed as the other vessel must keep clear
    N c. the other vessel must keep her course and speed
    N d. both vessels must keep their course and speed

4669: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning the light used with whistle signals?

    N a. Use of such a light is required.
    Y b. Its purpose is to supplement short blasts of the whistle.
    N c. The light shall have the same characteristics as a masthead light.
    N d. All of the above

4725: BOTH INTERNATIONAL & INLAND What is the minimum sound signaling equipment required aboard a vessel 24 meters in length?

    N a. Any means of making an efficient sound signal
    N b. A bell only
    N c. A whistle only
    Y d. A bell and a whistle

4870: BOTH INTERNATIONAL & INLAND When do the Rules require both vessels to change course?

    N a. Any time the danger signal is sounded
    N b. When two power-driven vessels are crossing and it is apparent to the stand-on vessel that the give-way vessel is not taking appropriate action
    Y c. When two power-driven vessels are meeting head-on
    N d. All of the above

8128: INTERNATIONAL ONLY Which statement is TRUE, according to the Rules?

    Y a. A vessel engaged in fishing while underway shall, so far as possible, keep out of the way of a vessel restricted in her ability to maneuver.
    N b. A vessel not under command shall keep out of the way of a vessel restricted in her ability to maneuver.
    N c. A vessel engaged in fishing shall keep out of the way of a sailing vessel.
    N d. A vessel not under command shall keep out of the way of a vessel engaged in fishing.

8129: INTERNATIONAL ONLY Which statement is TRUE, according to the Rules?

    N a. A vessel not under command shall keep out of the way of a vessel restricted in her ability to maneuver.
    N b. A vessel not under command shall avoid impeding the safe passage of a vessel constrained by her draft.
    N c. A vessel constrained by her draft shall keep out of the way of a vessel engaged in fishing.
    Y d. A vessel engaged in fishing while underway shall, so far as possible, keep out of the way of a vessel restricted in her ability to maneuver.

8136: INTERNATIONAL ONLY A power-driven vessel pushing ahead or towing alongside will show sidelights, a stern light, and __________.

    N a. an all-round red light where it can best be seen
    N b. two yellow masthead lights in a vertical line
    Y c. two masthead lights in a vertical line
    N d. a single white light forward