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.


14: INLAND ONLY You have made your vessel up to a tow and are moving from a pier out into the main channel. Your engines are turning ahead. What whistle signal should you sound?


47: INLAND ONLY A flashing blue light is used to identify __________.


67: INLAND ONLY A power-driven vessel, when leaving a dock or berth, is required to sound __________.


137: INLAND ONLY A vessel displaying an alternating red and yellow light is __________.

    N a. in distress
    N b. enforcing the law
    Y c. engaged in public safety activities
    N d. restricted in its ability to maneuver

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

214: INTERNATIONAL ONLY At night, you sight the lights shown. What do the lights indicate? (DIAGRAM 55 )

    N a. A vessel fishing at anchor
    Y b. A tug with a tow alongside
    N c. A tug not under command
    N d. A pipeline

359: BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown. Vessel "A" sounds one short blast on the whistle. You are on vessel "B" and doubt that sufficient action is being taken by vessel "A" to avoid collision. You should __________. (DIAGRAM 42 )

    N a. maintain course and speed
    N b. alter course to the left and increase speed
    N c. sound one short blast and maintain course and speed
    Y d. None of the above

399: BOTH INTERNATIONAL & INLAND The lead vessel shown is a __________. (DIAGRAM 24 )

    N a. mineclearance vessel
    N b. survey vessel
    Y c. power-driven vessel towing astern
    N d. None of the above

4096: BOTH INTERNATIONAL & INLAND While underway, in fog, you hear a whistle signal of one prolonged blast followed by two short blasts. This signal is sounded by a vessel __________.

    Y a. not under command
    N b. being towed
    N c. on pilotage duty
    N d. aground

4098: BOTH INTERNATIONAL & INLAND You can indicate that your vessel is in distress by __________.

    N a. displaying a large red flag
    N b. displaying three black balls in a vertical line
    N c. sounding four or more short rapid blasts on the whistle
    Y d. continuously sounding the fog whistle

4133: BOTH INTERNATIONAL & INLAND Which statement is TRUE when you are towing more than one barge astern at night?

    N a. Only the last barge in the tow must be lighted.
    N b. Only the first and last barges in the tow must be lighted.
    Y c. All barges in the tow must be lighted.
    N d. All barges, except unmanned barges, must be lighted.

4146: BOTH INTERNATIONAL & INLAND When taking action to avoid collision, you should __________.

    Y a. make sure the action is taken in enough time
    N b. not make any large course changes
    N c. not make any large speed changes
    N d. All of the above

4182: BOTH INTERNATIONAL & INLAND Distress signals may be __________.

    N a. red flares
    N b. smoke signals
    N c. sound signals
    Y d. Any of the above

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

4230: BOTH INTERNATIONAL & INLAND In restricted visibility, a vessel restricted in her ability to maneuver, at anchor, would sound a fog signal of __________.

    N a. the rapid ringing of a bell for five seconds every minute
    N b. two prolonged and two short blasts every two minutes
    Y c. one prolonged and two short blasts every two minutes
    N d. two prolonged and one short blast every two minutes

4253: BOTH INTERNATIONAL & INLAND A pilot vessel on pilotage duty shall show identity lights __________.

    N a. at any time while underway
    N b. while at anchor
    N c. while alongside a vessel
    Y d. All of the above

4301: BOTH INTERNATIONAL & INLAND In which situation would risk of collision definitely exist?

    N a. A vessel is 22 degrees on your port bow, range increasing, bearing changing slightly to the right.
    N b. A vessel is broad on your starboard beam, range decreasing, bearing changing rapidly to the right.
    N c. A vessel is 22 degrees abaft your port beam, range increasing, bearing is constant.
    Y d. A vessel is on your starboard quarter, range decreasing, bearing is constant.

4419: BOTH INTERNATIONAL & INLAND A vessel 25 meters in length must have which sound signaling appliance onboard?

    N a. None is required
    N b. Whistle only
    Y c. Whistle and bell only
    N d. Whistle, bell, and gong

4457: BOTH INTERNATIONAL & INLAND If you anchor your 25-meter vessel in a harbor, what light(s) must you show?

    Y a. One all-round white light
    N b. Two all-round white lights
    N c. One all-round red light
    N d. All the deck house lights

4488: BOTH INTERNATIONAL & INLAND You are approaching a bend in a channel. You cannot see around the bend because of the height of the bank. You should __________.

    N a. stop engines and navigate with caution
    N b. stay in the middle of the channel
    N c. sound passing signals to any other vessel that may be on the other side of the bend
    Y d. sound a whistle blast of 4 to 6 seconds duration

4498: BOTH INTERNATIONAL & INLAND In the daytime, you see a large sailing vessel on the beam. You know that she is also propelled by machinery if she shows __________.

    N a. a basket
    N b. a black ball
    Y c. a black cone
    N d. two black cones

4574: BOTH INTERNATIONAL & INLAND Which vessel shall NOT show her sidelights?

    Y a. A fishing vessel that is not making way
    N b. A sailing vessel which is becalmed
    N c. A vessel engaged in underwater operations
    N d. A vessel that is not under command making way

4601: BOTH INTERNATIONAL & INLAND A vessel towing a barge astern would show, at the stern __________.

    N a. only a stern light
    Y b. a towing light above the stern light
    N c. two towing lights in a vertical line
    N d. two white lights in a vertical line

4610: BOTH INTERNATIONAL & INLAND You are aboard the give-way vessel in a crossing situation. What should you NOT do in obeying the Rules?

    Y a. Cross ahead of the stand-on vessel
    N b. Make a large course change to starboard
    N c. Slow your vessel
    N d. Back your vessel

4627: BOTH INTERNATIONAL & INLAND While underway you sight a vessel displaying the day-shapes shown. You should __________. (DIAGRAM 6 )

    N a. contact the vessel on VHF radiotelephone
    N b. provide assistance, the other vessel is in distress
    Y c. stay clear, the other vessel cannot get out of the way
    N d. stop your vessel and sound passing signals

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

4843: BOTH INTERNATIONAL & INLAND According to the Rules, a vessels length is her __________.

    N a. length between the perpendiculars
    N b. length along the waterline
    Y c. length overall
    N d. registered length

6510: BOTH INTERNATIONAL & INLAND You hear the fog signal of another vessel forward of your beam. Risk of collision may exist. You MUST __________.

    Y a. take all way off, if necessary
    N b. stop your engines
    N c. begin a radar plot
    N d. All of the above

8078: INTERNATIONAL ONLY Vessel "A" is overtaking vessel "B" on open waters as shown and will pass without changing course. Vessel "A" __________. (DIAGRAM 17 )

    Y a. need not sound any whistle signals
    N b. should sound two short blasts
    N c. should sound the danger signal
    N d. should sound one long blast

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.