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.


26: INLAND ONLY A law enforcement boat may display a __________.


28: INLAND ONLY A vessel overtaking another in a narrow channel, and wishing to pass on the other vessel's port side, would sound a whistle signal of __________.


101: INLAND ONLY You are overtaking another power-driven vessel in a narrow channel. The other vessel will have to move to allow you to pass. You wish to overtake the other vessel on her starboard side. Your first whistle signal should be __________.


119: INLAND ONLY What MAY be used to indicate the presence of a partly submerged object being towed?

    N a. A black cone, apex upward
    N b. Two all-round yellow lights at each end of the tow
    Y c. The beam of a search light from the towing vessel shown in the direction of the tow
    N d. All of the above

152: BOTH INTERNATIONAL & INLAND The vessel showing the day signal is __________. (DIAGRAM 22 )

    N a. A vessel engaged in mine clearance operations
    N b. A fishing vessel with gear extending more than 150 meters horizontally
    N c. A trawler shooting nets in the direction indicated
    Y d. A tug with a tow exceeding 200 meters unable to deviate from course

178: BOTH INTERNATIONAL & INLAND Which display of lights shown indicates a 65-meter tug towing a barge astern, length of tow 120 meters? (DIAGRAM 72 )

    N a. A
    N b. B
    Y c. C
    N d. D

257: INLAND ONLY Two power-driven vessels are meeting in the situation as shown. One short blast from either vessel means __________. (DIAGRAM 37 )

    N a. "I am altering my course to starboard."
    Y b. "I intend to leave you on my port side."
    N c. "I intend to hold course and speed."
    N d. "I intend to pass on your starboard side."

269: 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 "A" 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. All of the above

312: INLAND ONLY You see the lights shown while proceeding in a channel. What should you do? (DIAGRAM 85 )

    N a. Proceed at full see speed through the two sets of double red lights.
    N b. Stop the vessel and await the red lights to change to green.
    Y c. Slow down and pass between the two sets of double red lights.
    N d. None of the above

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

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

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

4175: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown is __________. (DIAGRAM 57 )

    Y a. restricted in her ability to maneuver and not making way
    N b. engaged in fishing and not making way
    N c. a pilot vessel underway and making way on pilotage duty
    N d. towing and making way

4202: BOTH INTERNATIONAL & INLAND You are underway in fog when you hear the following signal: one short blast, one prolonged blast and one short blast in succession. Which of the following would it be?

    N a. A sailing vessel underway with the wind abaft the beam
    N b. A power-driven vessel underway and making way through the water
    Y c. A vessel at anchor
    N d. A vessel towing

4215: BOTH INTERNATIONAL & INLAND An inconspicuous, partly submerged vessel or object being towed, where the length of tow is 100 meters, shall show __________.

    N a. yellow lights at each end
    N b. two red lights in a vertical line
    N c. a black ball
    Y d. a diamond shape

4263: BOTH INTERNATIONAL & INLAND In a dense fog, you hear a whistle signal of one prolonged blast followed by three short blasts. This signal is sounded by a __________.

    Y a. manned vessel being towed
    N b. fishing vessel underway trawling
    N c. pilot vessel underway making a special signal
    N d. vessel not under command

4276: BOTH INTERNATIONAL & INLAND While underway your vessel enters fog. You stop your engines and the vessel is dead in the water. Which fog signal should you sound?

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

4300: BOTH INTERNATIONAL & INLAND At night, a vessel displaying the light shown is __________. (DIAGRAM 46 )

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

4444: BOTH INTERNATIONAL & INLAND Which vessel must exhibit a conical shape, apex downwards?

    N a. A 10-meter vessel engaged in fishing
    Y b. A 15-meter vessel proceeding under sail when also being propelled by machinery
    N c. A 20-meter vessel restricted in her ability to maneuver
    N d. All of the above

4466: BOTH INTERNATIONAL & INLAND Which lights shall a 200-meter vessel exhibit when at anchor?

    N a. In the forepart of the vessel, a 225-degree white light
    N b. In the after part of the vessel, a 112.5-degree white light
    Y c. Working lights to illuminate the decks
    N d. In the forepart of the vessel, a 112.5-degree white light

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

4629: BOTH INTERNATIONAL & INLAND For a stand-on vessel to take action to avoid collision she shall, if possible, NOT __________.

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

4649: BOTH INTERNATIONAL & INLAND Which vessel may carry her sidelights and stern light in one combined lantern?

    N a. A 10-meter power-driven vessel
    N b. A 15-meter vessel propelled by sail and machinery
    Y c. A 10-meter sailing vessel
    N d. All of the above

4693: BOTH INTERNATIONAL & INLAND A 200-meter vessel is aground in restricted visibility. Which signal is optional?

    Y a. A whistle signal
    N b. A gong signal
    N c. A bell signal
    N d. All of the above are optional.

4709: BOTH INTERNATIONAL & INLAND At night, a vessel displaying the lights shown is __________. (DIAGRAM 52 )

    N a. aground
    Y b. underway
    N c. at anchor
    N d. transferring dangerous cargo

4731: BOTH INTERNATIONAL & INLAND Additional light signals are provided in the Annexes to the Rules for vessels __________.

    N a. not under command
    Y b. engaged in fishing
    N c. engaged in towing
    N d. under sail

4736: BOTH INTERNATIONAL & INLAND In restricted visibility a towed vessel must sound a fog signal when it is _____________ .

    N a. the last vessel in the tow
    Y b. the last vessel in the tow and it is carrying a crew
    N c. manned, regardless of its position in the tow
    N d. None of the above are correct

4827: BOTH INTERNATIONAL & INLAND The Rules state that vessels may depart from the requirements of the Rules when __________.

    N a. operating in restricted visibility
    N b. operating in a narrow channel
    Y c. necessary to avoid immediate danger
    N d. the Master enters it in the ship's log

4841: BOTH INTERNATIONAL & INLAND A vessel transferring cargo while underway is classified by the Rules as a vessel __________.

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

8032: INTERNATIONAL ONLY Under what circumstances would an overtaking vessel sound a whistle signal of two prolonged followed by one short blast?

    N a. When overtaking in restricted visibility
    Y b. When overtaking in a narrow channel
    N c. When overtaking on open waters
    N d. When no other vessels are in the immediate area

8057: INTERNATIONAL ONLY Your vessel is backing out of a slip in a harbor and you can see that other vessels are approaching. You should sound __________.

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