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.


56: INLAND ONLY Your vessel must remain in a narrow channel for safe operation. Another vessel is crossing the channel from your starboard. You do not think she will pass safely. You MUST __________.


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


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


129: INLAND ONLY You are proceeding in a channel in inland waters and are meeting an outbound vessel. Your responsibilities include __________.

    N a. keeping to that side of the channel which is on your vessel's port side
    Y b. exchanging whistle signals if passing within half a mile
    N c. stopping your vessel and letting the outbound vessel initiate signals for passing
    N d. giving the outbound vessel the right of way

177: BOTH INTERNATIONAL & INLAND You see the display of lights shown. This could indicate a __________. (DIAGRAM 64 )

    N a. dredge working at anchor
    N b. dredge restricted in its ability to maneuver
    N c. 55-meter tug towing astern, length of tow exceeds 200 meters
    Y d. 65-meter tug towing astern, length of tow 150 meters

181: BOTH INTERNATIONAL & INLAND At night, you see the display of lights shown. They indicate a(n) __________. (DIAGRAM 74 )

    Y a. sailing vessel
    N b. 8-meter power-driven vessel
    N c. vessel not under command
    N d. 12-meter fishing vessel

189: BOTH INTERNATIONAL & INLAND You are on vessel "A" towing a barge alongside and meeting vessel "B" as shown. Which action should you take? (DIAGRAM 39 )

    N a. Alter course to port
    Y b. Alter course to starboard
    N c. Back down to reduce the strain on the lines
    N d. Maintain course and speed

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

    N a. The vessels should continue on course and pass without sounding any whistle signals.
    Y 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 vessels should pass starboard to starboard and must sound whistle signals only if either vessel changes course.

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

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

4030: BOTH INTERNATIONAL & INLAND The NAVIGATION RULES define a "vessel not under command" as a vessel which __________.

    N a. from the nature of her work is unable to keep out of the way of another vessel
    Y b. through some exceptional circumstance is unable to maneuver as required by the rules
    N c. by taking action contrary to the rules has created a special circumstance situation
    N d. is moored, aground or anchored in a fairway

4055: BOTH INTERNATIONAL & INLAND When shall the stand-on vessel change course and speed?

    N a. The stand-on vessel may change course and speed at any time as it has the right-of-way
    N b. After the give-way vessel sounds one blast in a crossing situation
    Y c. When action by the give-way vessel alone cannot prevent collision
    N d. When the two vessels become less than half a mile apart

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

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

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

4171: BOTH INTERNATIONAL & INLAND A vessel engaged in fishing, and at anchor, shall show __________.

    N a. an anchor light
    N b. sidelights and a stern light
    N c. three lights in a vertical line, the highest and lowest being red, and the middle being white
    Y d. None of the above

4179: BOTH INTERNATIONAL & INLAND A sailing vessel is NOT allowed to show the all-round red over green lights on the mast if __________.

    N a. she is showing sidelights
    N b. her sidelights are combined and shown on the fore and aft centerline of the vessel
    N c. she is showing a stern light
    Y d. her sidelights and stern light are combined in one lantern and shown on the mast

4197: BOTH INTERNATIONAL & INLAND A vessel which is unable to maneuver due to some exceptional circumstance, shall show two red lights in a vertical line and __________.

    N a. during the day, three balls in a vertical line
    N b. during the day, three shapes, the highest and lowest being balls and the middle being a diamond
    Y c. when making way at night, sidelights and a stern light
    N d. when making way at night, masthead lights, sidelights, and a stern light

4231: BOTH INTERNATIONAL & INLAND A 15-meter sailing vessel would be required to show __________.

    N a. sidelights, stern light, and a red light over a green light on the mast
    Y b. sidelights, and stern light, but they may be in a combined lantern on the mast
    N c. separate sidelights and stern light
    N d. sidelights only

4351: BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing so as to involve risk of collision. Which statement is TRUE, according to the Rules?

    N a. The vessel which has the other on her own port side shall keep out of the way.
    Y b. If the stand-on vessel takes action, she shall avoid changing course to port.
    N c. If the give-way vessel takes action, she shall avoid changing course to starboard.
    N d. The give-way vessel should keep the other vessel to her starboard.

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

4597: BOTH INTERNATIONAL & INLAND A vessel not under command shall display __________.

    Y a. two red lights at night and two black balls during daylight
    N b. two red lights at night and three black balls during daylight
    N c. three red lights at night and two black balls during daylight
    N d. three red lights at night and three black balls during daylight

4598: BOTH INTERNATIONAL & INLAND A vessel engaged in fishing while at anchor shall sound a fog signal of __________.

    Y a. one prolonged and two short blasts at two-minute intervals
    N b. one prolonged and three short blasts at two-minute intervals
    N c. a rapid ringing of the bell for five seconds at one-minute intervals
    N d. a sounding of the bell and gong at one-minute intervals

4626: BOTH INTERNATIONAL & INLAND A vessel being towed astern, where the length of the tow exceeds 200 meters, will exhibit __________.

    N a. two balls in a vertical line
    Y b. a diamond shape where it can best be seen
    N c. a ball on each end of the tow
    N d. no day-shape

4721: BOTH INTERNATIONAL & INLAND Which vessel when anchored at night, would not be required to show anchor lights?

    Y a. A vessel engaged in underwater operations
    N b. A vessel engaged in mine clearance
    N c. A vessel engaged on pilotage duty
    N d. A vessel engaged in survey operations

4728: BOTH INTERNATIONAL & INLAND Which statement is TRUE, according to the Rules?

    N a. A vessel engaged in fishing shall keep out of the way of a sailing vessel.
    N b. A vessel not under command shall keep out of the way of a vessel engaged in fishing.
    Y c. 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 d. A vessel not under command shall keep out of the way of a vessel restricted in her ability to maneuver.

4869: BOTH INTERNATIONAL & INLAND Power-driven vessels must keep out of the way of sailing vessels except __________.

    N a. in a crossing situation
    N b. when they are making more speed than the power-driven vessel
    Y c. when the sailing vessel is overtaking
    N d. on the Inland Waters of the United States

8016: INTERNATIONAL ONLY What whistle signal, if any, would be sounded when two vessels are meeting, but will pass clear starboard to starboard?

    N a. One short blast
    N b. Two short blasts
    N c. Five or more short blasts
    Y d. No signal is required.

8081: INTERNATIONAL ONLY The light which may be used with a vessel's whistle must be __________.

    N a. used when the whistle is broken
    Y b. a white light
    N c. used only at night
    N d. used prior to sounding the whistle

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

8116: INTERNATIONAL ONLY Which vessel shall avoid impeding the safe passage of a vessel constrained by her draft?

    N a. A vessel not under command
    Y b. A sailing vessel
    N c. A vessel restricted in her ability to maneuver
    N d. All of the above