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.


74: INLAND ONLY Which term is NOT used in the Inland Navigation Rules?


144: INLAND ONLY A light used to signal passing intentions must be an __________.


150: INLAND ONLY A power-driven vessel, when leaving a dock or berth, must sound what signal?


256: INTERNATIONAL ONLY Vessels "A" and "B" are meeting on a river as shown and will pass 1/4 mile apart. If you are on vessel "A", in addition to the sidelight, which other light(s) will you see on vessel "B"? (DIAGRAM 41 )

    N a. special flashing yellow light
    Y b. two white masthead lights in a vertical line
    N c. two yellow towing lights
    N d. None of the above

266: INLAND ONLY Two power-driven vessels are meeting in a narrow channel on the Great Lakes as shown. Vessel "A" is downbound with a following current. Vessel "B" shall __________. (DIAGRAM 37 )

    N a. propose the manner of passage
    N b. have the right of way
    N c. initiate the maneuvering signals
    Y d. None of the above

294: BOTH INTERNATIONAL & INLAND The display of lights shown could represent a __________. (DIAGRAM 48 )

    N a. a submarine on the surface
    N b. sailing vessel
    N c. a vessel not under command
    Y d. None of the above

315: BOTH INTERNATIONAL & INLAND At night a vessel displaying the lights as shown is __________. (DIAGRAM 82 )

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

345: 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. This signal means __________. (DIAGRAM 42 )

    N a. "I intend to overtake you on my starboard side"
    N b. "I am operating astern propulsion"
    Y c. "I intend to leave you on my port side"
    N d. None of the above

355: 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. This signal means __________. (DIAGRAM 42 )

    Y a. "I am altering my course to starboard"
    N b. "I intend to leave you on my port side"
    N c. "I am altering my course to port"
    N d. None of the above

4018: BOTH INTERNATIONAL & INLAND Which is a distress signal?

    N a. A triangular flag above or below a ball
    N b. The International Code Signal of distress indicated by "JV"
    N c. A green smoke signal
    Y d. Flames on the vessel as from a burning tar barrel

4044: BOTH INTERNATIONAL & INLAND You see a vessel's green sidelight bearing due east from you. The vessel might be heading __________.

    N a. east (090°)
    N b. northeast (045°)
    N c. northwest (315°)
    Y d. southwest (225°)

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

4131: BOTH INTERNATIONAL & INLAND What day-shape should a vessel being towed exhibit if the tow EXCEEDS 200 meters?

    N a. Two balls
    N b. Two diamonds
    N c. One ball
    Y d. One diamond

4237: BOTH INTERNATIONAL & INLAND At night, which lights would you see on a vessel engaged in fishing, other than trawling?

    N a. Two red lights, one over the other
    N b. A green light over a red light
    Y c. A red light over a white light
    N d. A white light over a red light

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

4352: BOTH INTERNATIONAL & INLAND What is the minimum vessel length which must show two white masthead lights, one forward and one aft, when underway at night?

    N a. 7 meters
    N b. 20 meters
    Y c. 50 meters
    N d. 100 meters

4482: BOTH INTERNATIONAL & INLAND You are underway in a narrow channel and you are being overtaken by a vessel astern. The overtaking vessel sounds a signal indicating his intention to pass your vessel on your starboard side. If such an action appears dangerous you should sound __________.

    Y a. five short and rapid blasts
    N b. three short and rapid blasts
    N c. one prolonged followed by one short blast
    N d. one prolonged, one short, one prolonged, and one short blast in that order

4572: BOTH INTERNATIONAL & INLAND You are underway in low visibility and sounding fog signals. What changes would you make in the fog signal immediately upon losing propulsion?

    N a. Begin sounding two prolonged blasts at two-minute intervals.
    N b. Begin sounding one prolonged blast followed by three short blasts at two-minute intervals.
    Y c. Begin sounding one prolonged blast followed by two short blasts at two-minute intervals.
    N d. No change should be made in the fog signal.

4581: BOTH INTERNATIONAL & INLAND A vessel shall slacken her speed, stop, or reverse her engines, if necessary, to __________.

    N a. avoid collision
    N b. allow more time to assess the situation
    N c. be stopped in an appropriate distance
    Y d. All of the above

4646: BOTH INTERNATIONAL & INLAND By night, you sight the lights of a vessel engaged in underwater operations. If an obstruction exists on the port side of the vessel, it will be marked by __________.

    N a. a floodlight
    Y b. two red lights in a vertical line
    N c. a single red light
    N d. any visible lights

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

4724: BOTH INTERNATIONAL & INLAND At night, a vessel displaying the lights shown is __________. (DIAGRAM 65 )

    N a. trawling
    N b. not under command
    Y c. anchored
    N d. drifting

4739: BOTH INTERNATIONAL & INLAND 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 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 engaged in fishing shall keep out of the way of a sailing vessel.

4825: BOTH INTERNATIONAL & INLAND What is a light signal authorized by the Secretary of the Navy as an additional navigational light for a ship of war?

    N a. Two yellow lights in a vertical line for a carrier launching aircraft
    N b. Green masthead and yardarm lights for a vessel engaged in mineclearing operations
    Y c. Flashing amber beacon for submarines
    N d. Yellow flares indicating torpedo firing exercises

4828: BOTH INTERNATIONAL & INLAND The Rules state that vessels may depart from the Rules when __________.

    N a. there are other vessels in the vicinity
    N b. operating in a traffic separation scheme
    N c. engaged in a situation involving more than two vessels
    Y d. necessary to avoid immediate danger

4871: BOTH INTERNATIONAL & INLAND Your vessel is NOT making way, but is not in any way disabled. Another vessel is approaching you on your starboard beam. Which statement is TRUE?

    Y a. Your vessel is obligated to stay out of the way.
    N b. The other vessel must give way, since your vessel is stopped.
    N c. You should be showing the lights or shapes for a vessel not under command.
    N d. You should be showing the lights or shapes for a vessel restricted in her ability to maneuver.

8044: INTERNATIONAL ONLY In international waters, you are on Vessel "I" in the situation as shown. Vessel "II" sounds one short blast. Which action should you take? (DIAGRAM 36 )

    N a. Sound one short blast and hold course and speed.
    Y b. Hold course and speed
    N c. Sound one short blast and slow down or turn to starboard.
    N d. Sound two short blasts, slow down and turn to port

8068: INTERNATIONAL ONLY A signal of one prolonged, one short, one prolonged, and one short blast, in that order is given by a vessel __________.

    N a. engaged on pilotage duty
    N b. in distress
    N c. at anchor
    Y d. being overtaken in a narrow channel

8099: INTERNATIONAL ONLY A vessel displaying three red lights in a vertical line is __________.

    N a. restricted in her ability to maneuver
    N b. not under command
    N c. engaged in mineclearing operations
    Y d. constrained by her draft

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.