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.


127: INLAND ONLY You are on board the stand-on vessel in a crossing situation. You sound a one blast whistle signal, and the give-way vessel answers with a two-blast signal. You should then sound the danger signal and __________.


158: BOTH INTERNATIONAL & INLAND The lights shown are exhibited by a vessel __________. (DIAGRAM 49 )


206: INTERNATIONAL ONLY What lights are required for a single barge being towed alongside?


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

    Y a. tug and a barge being towed astern
    N b. vessel constrained by her draft
    N c. vessel in the nondisplacement mode
    N d. vessel not under command

4074: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning a vessel of 75 meters in length, at anchor?

    N a. She must show an all-round white light forward.
    N b. She must show a second all-round white light aft.
    N c. She may use her working lights to illuminate her decks.
    Y d. All of the above

4091: BOTH INTERNATIONAL & INLAND An authorized light to assist in the identification of submarines operating on the surface is a(n) __________.

    N a. blue rotating light
    Y b. intermittent flashing amber/yellow light
    N c. flashing white light
    N d. flashing sidelight

4119: BOTH INTERNATIONAL & INLAND A lantern combining a vessel's navigation lights may be shown on a __________.

    Y a. 15-meter sailing vessel
    N b. 20-meter vessel engaged in fishing and making way
    N c. 25-meter power-driven vessel trolling
    N d. 25-meter pilot vessel

4136: BOTH INTERNATIONAL & INLAND The white masthead light required for a power-driven vessel under the Rules is visible over how many degrees of the horizon?

    N a. 022.5°
    N b. 112.5°
    Y c. 225.0°
    N d. 360.0°

4162: BOTH INTERNATIONAL & INLAND A vessel at night, displaying the lights shown is __________. (DIAGRAM 83 )

    N a. fishing
    Y b. not under command
    N c. towing
    N d. being towed

4179: BOTH INTERNATIONAL & INLAND A sailing vessel is NOT allowed to show the all-round red over green lights on the mast if __________.

    N a. she is showing sidelights
    N b. her sidelights are combined and shown on the fore and aft centerline of the vessel
    N c. she is showing a stern light
    Y d. her sidelights and stern light are combined in one lantern and shown on the mast

4209: BOTH INTERNATIONAL & INLAND Which statement concerning maneuvering in restricted visibility is FALSE?

    N a. A vessel which cannot avoid a close-quarters situation with a vessel forward of her beam shall reduce her speed to bare steerageway.
    Y b. A vessel which hears a fog signal forward of her beam shall stop her engines.
    N c. A vessel which hears a fog signal forward of the beam shall navigate with caution.
    N d. If a vessel determines by radar that a close-quarters situation is developing, she shall take avoiding action in ample time.

4248: BOTH INTERNATIONAL & INLAND What is NOT a distress signal?

    N a. Red flares or red rockets
    N b. Continuous sounding of fog signaling apparatus
    N c. International Code Flags "November" and "Charlie"
    Y d. Basket hanging in the rigging

4314: BOTH INTERNATIONAL & INLAND In order for a vessel to be "engaged in fishing" she must be __________.

    N a. underway
    N b. using gear which extends more than 50 meters outboard
    N c. using a seine of some type
    Y d. using gear which restricts her maneuverability

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

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

4372: BOTH INTERNATIONAL & INLAND You are the stand-on vessel in a crossing situation. If you think the give-way vessel is NOT taking sufficient action to avoid collision, you should sound __________.

    N a. one short blast and maintain course
    N b. two short blasts, alter to port, and pass astern
    N c. no signal and maneuver at will
    Y d. the danger signal

4383: BOTH INTERNATIONAL & INLAND You are in charge of a stand-on vessel in a crossing situation. The other vessel is 1.5 miles to port. You believe that risk of collision exists. You should __________.

    N a. take avoiding action immediately upon determining that risk of collision exists
    N b. immediately sound the danger signal
    Y c. take avoiding action only after providing the give-way vessel time to take action, and determining that her action is not appropriate
    N d. hold course and speed until the point of extremis, and then sound the danger signal, taking whatever action will best avert collision

4391: BOTH INTERNATIONAL & INLAND You are crossing a narrow channel in a small motorboat. You sight a tankship off your port bow coming up the channel. Which statement is TRUE?

    N a. You are the stand-on vessel because the tankship is to port.
    Y b. You cannot impede the safe passage of the tankship.
    N c. The tankship is the stand-on vessel because it is to port of your vessel.
    N d. The tankship is the stand-on vessel because it is the larger of the two vessels.

4412: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown is __________. (DIAGRAM 44 )

    N a. towing
    N b. conducting underwater survey operations
    N c. drifting
    Y d. aground

4424: BOTH INTERNATIONAL & INLAND The Rules state that risk of collision shall be deemed to exist __________.

    N a. whenever two vessels approach from opposite directions
    Y b. if the bearing of an approaching vessel does not appreciably change
    N c. whenever a vessel crosses ahead of the intended track of another vessel
    N d. if one vessel approaches another so as to be overtaking

4476: BOTH INTERNATIONAL & INLAND At night you sight a vessel displaying one green light. This light could indicate a __________.

    N a. vessel drifting
    N b. vessel at anchor
    N c. small motorboat underway
    Y d. sailboat underway

4544: BOTH INTERNATIONAL & INLAND You are approaching another vessel on crossing courses. She is approximately half a mile distant and is presently on your starboard bow. You believe she will cross ahead of you. She then sounds a whistle signal of five short blasts. You should __________.

    N a. answer the signal and hold course and speed
    N b. reduce speed slightly to make sure she will have room to pass
    Y c. make a large course change, accompanied by the appropriate whistle signal, and slow down if necessary
    N d. wait for another whistle signal from the other vessel

4595: BOTH INTERNATIONAL & INLAND Which vessel, when anchored at night, would NOT be required to show anchor lights?

    N a. A power-driven vessel
    N b. A vessel on pilotage duty
    Y c. A vessel dredging
    N d. A vessel restricted in her ability to maneuver

4632: BOTH INTERNATIONAL & INLAND The Rules state that a seaplane shall __________.

    N a. not be regarded as a vessel
    Y b. in general, keep well clear of all vessels
    N c. proceed at a slower speed than surrounding vessels
    N d. when making way, show the lights for a vessel not under command

4661: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning a towing vessel which, due to the nature of her work, is unable to keep out of the way of another vessel?

    N a. By day, she shall carry a black cylinder shape.
    N b. By day, she shall carry two black balls in a vertical line.
    N c. By night, she would show the same lights as a vessel not under command.
    Y d. By day, she would show the same shapes as a vessel restricted in her ability to maneuver.

4691: BOTH INTERNATIONAL & INLAND A 200-meter vessel is aground in fog. Which signal is optional?

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

4830: BOTH INTERNATIONAL & INLAND The Navigation Rules define a "vessel not under command" as a vessel which __________.

    N a. from the nature of her work is unable to keep out of the way of another vessel
    N b. does not have a proper look-out
    N c. by taking action contrary to the Rules has created a special circumstance situation
    Y d. through some exceptional circumstance is unable to maneuver as required by the Rules

4849: BOTH INTERNATIONAL & INLAND "safe speed" is defined as that speed where __________.

    N a. you can stop within your visibility range
    N b. the vessel is not subject to vibrations
    N c. you are traveling slower than surrounding vessels
    Y d. you can take proper and effective action to avoid collision

4856: BOTH INTERNATIONAL & INLAND When in sight of another vessel and there is sufficient sea room, any action taken to avoid collision must __________.

    N a. be accompanied by sound signals
    Y b. not result in another close quarters situation
    N c. include a speed change
    N d. All of the above

8135: INTERNATIONAL ONLY What characteristic must a light used to indicate passing intentions have?

    N a. It must be an all-round red light.
    Y b. It must be an all-round white light.
    N c. It must be an all-round yellow light.
    N d. It can be either an all-round white or yellow light.