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.


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


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


197: INTERNATIONAL ONLY A partially submerged object towed by a vessel must show during the day one __________.


259: BOTH INTERNATIONAL & INLAND Barges being towed at night must exhibit navigation lights __________.

    Y a. at all times
    N b. only if manned
    N c. only if towed astern
    N d. Need not be lighted

272: BOTH INTERNATIONAL & INLAND Two vessels are meeting as shown in a narrow channel. Vessel "A" is a sailing vessel. Vessel "B" is a power-driven vessel which can safely navigate only within the channel. Vessel "B" sounds the danger signal. Vessel "A" shall __________. (DIAGRAM 37 )

    N a. maintain course and speed
    Y b. not impede the passage of vessel "B"
    N c. sound one prolonged followed by two short blasts
    N d. have the right of way

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

337: 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 )

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

356: 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 )

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

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

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

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

    N a. law enforcement vessel
    Y b. sailing vessel
    N c. vessel engaged in trawling
    N d. power-driven vessel

4022: BOTH INTERNATIONAL & INLAND A sailing vessel underway may exhibit __________.

    Y a. a red light over a green light at the masthead
    N b. a green light over a red light at the masthead
    N c. two white lights in a vertical line at the stern
    N d. an all-round white light at the bow

4050: BOTH INTERNATIONAL & INLAND A 22-meter sailing vessel when also being propelled by machinery shall show during daylight hours a __________.

    N a. black diamond
    Y b. black cone
    N c. black ball
    N d. basket

4149: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown is __________. (DIAGRAM 84 )

    Y a. not under command
    N b. showing improper lights
    N c. towing
    N d. dredging

4247: BOTH INTERNATIONAL & INLAND What day-shape is to be shown by a vessel aground?

    N a. A cylinder
    N b. Two cones with their apexes together
    N c. Two black balls in a vertical line
    Y d. Three black balls in a vertical line

4310: BOTH INTERNATIONAL & INLAND Which vessel is to be regarded as a vessel "restricted in her ability to maneuver"?

    N a. A vessel fishing with trawls
    N b. A vessel which has lost the use of her steering gear
    N c. A vessel with a draft of such depth that she cannot change her course
    Y d. A vessel engaged in mineclearing

4331: BOTH INTERNATIONAL & INLAND You see the lights shown. What would it be? (DIAGRAM 77 )

    N a. A vessel pushing barges ahead
    Y b. A vessel towing barges astern
    N c. A pipeline
    N d. A stationary dredge

4377: BOTH INTERNATIONAL & INLAND The term "prolonged blast" means a blast of __________.

    N a. two to four seconds duration
    Y b. four to six seconds duration
    N c. six to eight seconds duration
    N d. eight to ten seconds duration

4451: BOTH INTERNATIONAL & INLAND Every vessel should at all times proceed at a "safe speed". "Safe speed" is defined as that speed where __________.

    N a. you can stop within your visibility range
    Y b. you can take proper and effective action to avoid collision
    N c. you are traveling slower than surrounding vessels
    N d. no wake comes from your vessel

4531: BOTH INTERNATIONAL & INLAND 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 two short blasts every two minutes

4550: BOTH INTERNATIONAL & INLAND Which statement concerning an overtaking situation is correct?

    N a. The overtaking vessel is the stand-on vessel.
    N b. Neither vessel is the stand-on vessel.
    N c. The overtaking vessel must maintain course and speed.
    Y d. The overtaking vessel must keep out of the way of the other.

4552: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning fog signals?

    N a. All fog signals for sailing vessels are to be given at intervals of not more than one minute.
    N b. A vessel not under command sounds the same fog signal as a vessel towed.
    N c. A pilot vessel underway and making way sounds the pilot identity signal and no other signal.
    Y d. A vessel aground may sound a whistle signal.

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

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

4654: BOTH INTERNATIONAL & INLAND A vessel engaged in fishing shall keep out of the way of a vessel __________.

    N a. under sail
    Y b. restricted in her ability to maneuver
    N c. crossing a channel
    N d. All of the above

4677: BOTH INTERNATIONAL & INLAND You are on vessel "A", as shown and hear vessel "B" sound a signal indicating his intention to overtake you. You feel it is not safe for vessel "B" to overtake you at the present time. You should __________. (DIAGRAM 32 )

    N a. sound two short blasts
    Y b. sound five or more short and rapid blasts
    N c. not answer the whistle signal from vessel "B"
    N d. sound three blasts of the whistle

4692: BOTH INTERNATIONAL & INLAND What is NOT a vessel "restricted in her ability to maneuver"?

    N a. A vessel laying engaged in laying submarine cable
    N b. A vessel towing with limited maneuverability due to a large unwieldy tow
    Y c. A deep-draft vessel that can only navigate in a dredged channel
    N d. A towing vessel underway with a fuel barge alongside and taking on fuel

4697: BOTH INTERNATIONAL & INLAND A tug is towing three barges astern in restricted visibility. The second vessel of the tow should sound __________.

    N a. one prolonged and two short blasts
    N b. one prolonged and three short blasts
    N c. one short blast
    Y d. no fog signal

4820: BOTH INTERNATIONAL & INLAND You are about to cross a narrow channel when you see an approaching vessel that can only be navigated safely within the channel. You should __________.

    N a. cross the channel as you are the stand-on vessel
    N b. cross only if the vessel in the channel is approaching on your port side
    Y c. not cross the channel if you might impede the other vessel
    N d. sound the danger signal

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

8115: INTERNATIONAL ONLY Of the vessels listed, which must keep out of the way of all the others?

    N a. A vessel constrained by her draft
    N b. A vessel restricted in her ability to maneuver
    Y c. A vessel pushing a barge
    N d. A vessel engaged in fishing