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.


146: INLAND ONLY What characteristic must a light have if used to signal passing intentions?


191: INLAND ONLY At night, you see the lights shown. They are shown on a __________. (DIAGRAM 75 )


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


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

255: INTERNATIONAL ONLY Vessels "A" and "B" are meeting on a river as shown and will pass 1/4 mile apart. Which light on vessel "B" will you see if you are on vessel "A"? (DIAGRAM 41 )

    N a. special flashing yellow light
    N b. flashing blue light
    N c. two yellow towing lights
    Y d. None of the above

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

339: 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
    N b. two short blasts
    Y c. one short blast
    N d. None of the above

366: BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown. Vessel "A" sounds one short blast on the whistle. Vessel "B" is the __________. (DIAGRAM 42 )

    N a. give-way vessel
    Y b. stand-on vessel
    N c. overtaking vessel
    N d. burdened vessel

396: BOTH INTERNATIONAL & INLAND You see ONLY the light shown. This could be a __________. (DIAGRAM 80 )

    N a. vessel aground
    N b. submarine on the surface
    N c. vessel engaged in trawling
    Y d. vessel under oars

4029: INLAND ONLY The masthead light may be located at other than the fore and aft centerline on a power-driven vessel __________.

    N a. less than 20 meters in length
    Y b. less than 12 meters in length
    N c. which has separate sidelights carried on the outboard extremes of the vessel's breadth
    N d. engaged in fishing

4060: BOTH INTERNATIONAL & INLAND A vessel approaching your vessel from 235° relative is in what type of situation?

    N a. Meeting
    Y b. Overtaking
    N c. Crossing
    N d. Passing

4066: BOTH INTERNATIONAL & INLAND The wind is ESE, and a sailing vessel is steering NW. Which fog signal should she sound?

    N a. One blast at one-minute intervals
    N b. One blast at two-minute intervals
    N c. Two blasts at one-minute intervals
    Y d. One prolonged and two short blasts at two-minute intervals

4077: BOTH INTERNATIONAL & INLAND A vessel at anchor shall display, between sunrise and sunset, on the forward part of the vessel where it can best be seen __________.

    Y a. one black ball
    N b. two black balls
    N c. one red ball
    N d. two orange and white balls

4089: BOTH INTERNATIONAL & INLAND A vessel engaged in mineclearing shows special identity lights __________.

    N a. in addition to the lights required for a power-driven vessel
    N b. which mean that other vessels should not approach within 1000 meters of the mineclearing vessel
    N c. which are green and show all-round
    Y d. All of the above

4112: BOTH INTERNATIONAL & INLAND A vessel, which is unable to maneuver due to some exceptional circumstance, shall exhibit __________.

    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, two all-round red lights, sidelights, and a stern light
    N d. when making way at night, masthead lights, sidelights, and a stern light

4192: BOTH INTERNATIONAL & INLAND In restricted visibility, a vessel fishing with nets shall sound at intervals of two minutes __________.

    N a. one prolonged blast
    Y b. one prolonged followed by two short blasts
    N c. one prolonged followed by three short blasts
    N d. two prolonged blasts in succession

4208: BOTH INTERNATIONAL & INLAND Five or more short blasts on a vessel's whistle indicates that she is __________.

    Y a. in doubt that another vessel is taking sufficient action to avoid a collision
    N b. altering course to starboard
    N c. altering course to port
    N d. the stand-on vessel and will maintain course and speed

4242: BOTH INTERNATIONAL & INLAND All fog signals shall be sounded every two minutes with the exception of a vessel __________.

    N a. underway or making way
    N b. under sail or under tow
    Y c. anchored or aground
    N d. not under command or restricted in her ability to maneuver

4409: BOTH INTERNATIONAL & INLAND A vessel or object being towed astern shall display a(n) __________.

    N a. forward masthead light
    N b. after masthead light
    Y c. stern light
    N d. All of the above

4426: BOTH INTERNATIONAL & INLAND A power-driven vessel is underway in fog but stopped and making no way through the water. What is the required fog signal?

    N a. One prolonged blast at not more than one-minute intervals
    N b. Two prolonged blasts at not more than one-minute intervals
    N c. One prolonged blast at not more than two-minute intervals
    Y d. Two prolonged blasts at not more than two-minute intervals

4507: BOTH INTERNATIONAL & INLAND The lights required by the Rules must be shown __________.

    Y a. from sunrise to sunset in restricted visibility
    N b. at all times
    N c. ONLY from sunset to sunrise
    N d. whenever a look-out is posted

4621: BOTH INTERNATIONAL & INLAND The steering and sailing rules for vessels in restricted visibility apply to vessels __________.

    N a. in sight of one another in fog
    Y b. navigating in or near an area of restricted visibility
    N c. only if they are showing special purpose lights
    N d. only if they have operational radar

4628: BOTH INTERNATIONAL & INLAND A sailing vessel displaying the day-shape shown is indicating that she is __________. (DIAGRAM 35 )

    Y a. being propelled by power as well as sail
    N b. on a starboard tack
    N c. close-hauled and has difficulty maneuvering
    N d. fishing as well as sailing

4664: BOTH INTERNATIONAL & INLAND You are approaching a narrow channel. You see a vessel that can only be navigated safely within the channel. You MUST __________.

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

4826: BOTH INTERNATIONAL & INLAND According to the Navigation Rules, you may depart from the Rules when __________.

    Y a. you do so to avoid immediate danger
    N b. no vessels are visible on radar
    N c. you are in a close quarters situation
    N d. out of sight of land

4833: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning a "vessel engaged in fishing"?

    N a. The vessel is classified as "restricted in her ability to maneuver".
    N b. Her gear will not affect the vessel's maneuverability.
    Y c. The vessel may be using nets, lines, or trawls.
    N d. She sounds the same fog signal as a vessel underway but stopped and making no 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.

8019: INTERNATIONAL ONLY If a vessel displays three all-round red lights in a vertical line at night, during the day she may show __________.

    N a. three balls in a vertical line
    Y b. a cylinder
    N c. two diamonds in a vertical line
    N d. two cones, apexes together

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

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