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.


51: INLAND ONLY Which statement is TRUE concerning the Inland Navigation Rules?


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"?


82: INLAND ONLY A vessel leaving a dock or berth must sound a prolonged blast of the whistle only if __________.


104: 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?

    Y a. Two unobstructed all-round white lights
    N b. Two yellow lights in a vertical line at the stern
    N c. A red light placed on all four corners
    N d. A red light placed on the two corners farthest from the bank

260: INLAND ONLY A vessel engaged in public safety activities may display an alternately flashing red and yellow light. This special light may be used by a vessel engaged in __________.

    Y a. search and rescue
    N b. restricted in ability to maneuver
    N c. not under command
    N d. river bank protection

265: INTERNATIONAL ONLY You are on a power-driven vessel "I" as shown. Vessel "II" is a vessel engaged in fishing. The vessels will pass within 1/2 mile of each other. Which action should you take? (DIAGRAM 36 )

    N a. Hold course and speed without giving a signal.
    N b. Sound the danger signal and slow to moderate speed.
    Y c. Sound one short blast, turn to starboard.
    N d. Sound one short blast and hold course and speed.

267: INTERNATIONAL ONLY Two power-driven vessels are meeting in the situation as shown. Two short blasts from either vessel means __________. (DIAGRAM 37 )

    N a. "I am altering my course to starboard."
    N b. "I intend to leave you on my port side."
    Y c. "I am altering my course to port."
    N d. "I am operating astern propulsion."

301: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown is a vessel __________. (DIAGRAM 79 )

    N a. engaged in submarine operations
    N b. dredging
    N c. engaged in fishing
    Y d. towing astern

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

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

338: 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. Vessel "B" should sound __________. (DIAGRAM 42 )

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

397: INTERNATIONAL ONLY Which signal may be sounded ONLY by vessels in restricted visibility?

    N a. At least five short and rapid blasts
    Y b. Four short blasts
    N c. One prolonged, one short, one prolonged, and one short blast, in that order
    N d. Two short blasts

4114: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning the light used with whistle signals?

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

4124: BOTH INTERNATIONAL & INLAND Vessel "A" is underway and pushing ahead when vessel "B" is sighted off the starboard bow as shown. Which vessel is the stand-on vessel? (DIAGRAM 28 )

    N a. Vessel "A" is the stand-on vessel because it is to port.
    N b. Vessel "A" is the stand-on vessel because it is pushing ahead.
    Y c. Vessel "B" is the stand-on vessel because it is to starboard of vessel "A".
    N d. Neither vessel is the stand-on vessel.

4141: BOTH INTERNATIONAL & INLAND While underway and towing, your vessel enters fog. Which fog signal should you sound?

    N a. One prolonged blast
    N b. Two prolonged blasts
    Y c. One prolonged blast and two short blasts
    N d. Three distinct blasts

4193: BOTH INTERNATIONAL & INLAND A 20-meter sailing vessel underway must exhibit a __________.

    Y a. stern light
    N b. combined lantern
    N c. red light over a green light at the masthead
    N d. All of the above

4219: 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 __________.

    N a. hold course and speed
    N b. sound the danger signal
    N c. initiate an exchange of passing signals
    Y d. do not cross the channel if you might impede the other vessel

4255: BOTH INTERNATIONAL & INLAND A stand-on vessel in a crossing situation is allowed to take action when __________.

    N a. on a collision course
    N b. the vessels will pass within one mile
    Y c. it becomes apparent to her that the give-way vessel is not taking appropriate action
    N d. the relative speed of the vessels indicates collision in less than six minutes

4311: BOTH INTERNATIONAL & INLAND Which vessel would show 3 day-shapes in a vertical line, the highest and lowest being balls and the middle shape being a diamond?

    N a. Vessel not under command
    N b. Vessel constrained by her draft
    N c. Vessel minesweeping
    Y d. Vessel restricted in her ability to maneuver

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

4345: BOTH INTERNATIONAL & INLAND A vessel showing a green light over a white light in a vertical line above the level of the sidelights is __________.

    N a. engaged in underwater construction
    N b. under sail and power
    N c. a pilot vessel
    Y d. trawling

4354: BOTH INTERNATIONAL & INLAND At night, a power-driven vessel less than 12 meters in length may, instead of the normal navigation lights, show sidelights and one __________.

    Y a. white light
    N b. yellow light
    N c. flashing white light
    N d. flashing yellow light

4385: BOTH INTERNATIONAL & INLAND To be considered "engaged in fishing" according to the Rules of the Road, a vessel must be __________.

    Y a. using fishing apparatus which restricts maneuverability
    N b. using trolling lines
    N c. power-driven
    N d. showing lights or shapes for a vessel restricted in her ability to maneuver

4387: BOTH INTERNATIONAL & INLAND An overtaking situation would be one in which one vessel is approaching another from more than how many degrees abaft the beam?

    N a. 0
    N b. 10
    Y c. 22.5
    N d. None of the above

4528: BOTH INTERNATIONAL & INLAND Which vessel is 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 her ability to maneuver when carrying out her work at anchor
    Y d. All of the above

4530: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning a partly submerged vessel being towed?

    N a. It must show a yellow light at each end.
    N b. It will show red lights along its length.
    Y c. A diamond shape will be carried at the aftermost extremity of the tow.
    N d. All of the above

4585: BOTH INTERNATIONAL & INLAND While underway at night you are coming up on a vessel from astern. What lights would you expect to see?

    N a. Red and green sidelights
    N b. Two white lights
    N c. One white light and red and green sidelights
    Y d. One white light

4650: BOTH INTERNATIONAL & INLAND Which lights would be shown at night by a vessel which is restricted in her ability to deviate from her course?

    N a. Three red lights in a vertical line
    N b. Three white lights in a vertical line
    N c. Three lights in a vertical line, the highest and lowest white and the middle red
    Y d. Three lights in a vertical line, the highest and lowest red and the middle white

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

8111: INTERNATIONAL ONLY Your vessel is backing out of a slip in a harbor. Visibility is restricted. You should sound __________.

    Y a. one prolonged blast only
    N b. one prolonged blast followed by three short blasts when the last line is taken aboard
    N c. one prolonged blast followed by three short blasts when leaving the slip
    N d. the danger signal

8127: INTERNATIONAL ONLY Which statement is TRUE, according to the Rules?

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