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.


168: BOTH INTERNATIONAL & INLAND You are on a vessel heading due north and see the lights shown one point on your port bow. This vessel could be heading __________. (DIAGRAM 51 )


232: BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown. Vessel "B" __________. (DIAGRAM 17 )


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


336: 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 __________. (DIAGRAM 42 )

    N a. maintain course and speed without sounding any signals
    N b. alter course to the right or slowdown
    Y c. sound one short blast and maintain course and speed
    N d. sound the danger signal and slow to moderate speed

350: 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 sound __________. (DIAGRAM 42 )

    N a. one prolonged, one short, one prolonged and one short blasts
    N b. one prolonged blast
    N c. two short blasts
    Y d. None of the above

363: BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown. Vessel "A" sounds one short blast on the whistle. Vessel "B" is the __________. (DIAGRAM 42 )

    N a. burdened vessel
    N b. give-way vessel
    N c. overtaking vessel
    Y d. None of the above

363: BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown. Vessel "A" sounds one short blast on the whistle. Vessel "B" is the __________. (DIAGRAM 42 )

    N a. burdened vessel
    N b. give-way vessel
    N c. overtaking vessel
    Y d. None of the above

1000: BOTH INTERNATIONAL & INLAND You hear the fog signal of another vessel forward of your beam. Risk of collision may exist. You MUST __________.

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

4024: BOTH INTERNATIONAL & INLAND The word "vessel", in the Rules, includes __________.

    N a. sailing ships
    N b. nondisplacement craft
    N c. seaplanes
    Y d. All of the above

4148: BOTH INTERNATIONAL & INLAND You are in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must __________.

    N a. stop your engines
    N b. sound two prolonged blasts of the whistle
    N c. sound the danger signal
    Y d. slow to bare steerageway

4272: BOTH INTERNATIONAL & INLAND A power-driven vessel, when towing another vessel astern shall show the light(s) in Diagram __________. (DIAGRAMS 46, 54, 60 )

    N a. 75
    Y b. 60
    N c. 54
    N d. 46

4294: BOTH INTERNATIONAL & INLAND At night you observe a vessel ahead show three flashes of a white light. This signal indicates that the vessel ahead is __________.

    N a. in distress
    N b. approaching a bend in the channel
    Y c. operating astern propulsion
    N d. intending to overtake another vessel

4341: BOTH INTERNATIONAL & INLAND On open water, a vessel fishing is in a crossing situation with a vessel sailing located on the fishing vessel's starboard side. Which vessel is the stand-on vessel?

    N a. The fishing vessel because it is to port of the sailing vessel.
    Y b. The fishing vessel because it is fishing.
    N c. The sailing vessel because it is to starboard of the fishing vessel.
    N d. The sailing vessel because it is sailing.

4401: BOTH INTERNATIONAL & INLAND You are underway in heavy fog. You hear the fog signal of a vessel which is somewhere ahead of your vessel. You must __________.

    N a. slow to moderate speed and navigate with caution
    N b. maintain speed and sound the danger signal
    N c. stop engines and navigate with caution
    Y d. slow to bare steerageway and navigate with caution

4408: BOTH INTERNATIONAL & INLAND A fishing vessel displaying the lights shown is __________. (DIAGRAM 67 )

    N a. anchored
    N b. underway but not fishing
    N c. tending a small fishing boat
    Y d. fishing by trawling

4440: BOTH INTERNATIONAL & INLAND Which craft would be considered a "power-driven vessel" under the Rules of the Road?

    N a. An auxiliary sail vessel, using her engine
    N b. A canoe being propelled by a small outboard motor
    N c. A tug powered by a diesel engine
    Y d. All of the above

4468: BOTH INTERNATIONAL & INLAND You see a vessel displaying three lights in a vertical line. The highest and lowest lights are red and the middle light is white. She is also showing a white light at the stern, which is lower than the forward light. It could be a __________.

    Y a. survey vessel
    N b. vessel not under command
    N c. vessel aground
    N d. pilot vessel with port side to you

4481: BOTH INTERNATIONAL & INLAND While underway in fog, you hear the rapid ringing of a bell for about five seconds followed by the sounding of a gong for about five seconds. This signal came from a __________.

    N a. vessel engaged in fishing at anchor
    N b. sailing vessel at anchor
    Y c. vessel 150 meters in length at anchor
    N d. vessel aground

4493: BOTH INTERNATIONAL & INLAND You are underway in fog and hear one short, one prolonged, and one short blast in succession. What is the meaning of this signal?

    N a. A vessel is in distress and needs assistance.
    N b. A vessel is fishing, hauling nets.
    Y c. A vessel is at anchor, warning of her position.
    N d. A vessel is towing.

4504: BOTH INTERNATIONAL & INLAND While underway in a narrow channel, a vessel should stay __________.

    N a. in the middle of the channel
    Y b. to the starboard side of the channel
    N c. to the port side of the channel
    N d. to the side of the channel that has the widest bends

4522: BOTH INTERNATIONAL & INLAND When a vessel sounds three short blasts on the whistle, this indicates that __________.

    N a. danger is ahead
    Y b. her engines are going astern
    N c. the vessel is not under command (broken down)
    N d. all other vessels should stand clear

4535: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning the danger signal?

    N a. May be sounded by the stand-on vessel only
    N b. Indicates that the vessel is in distress
    N c. Is used to indicate a course change
    Y d. May be supplemented by an appropriate light signal

4554: BOTH INTERNATIONAL & INLAND Which vessel must have a gong, or other equipment which will make the sound of a gong?

    N a. A sailing vessel
    N b. Any vessel over 50 meters
    Y c. Any vessel over 100 meters
    N d. A power-driven vessel over 75 meters

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

4711: BOTH INTERNATIONAL & INLAND Which vessel would exhibit sidelights when underway and not making way?

    N a. A vessel trawling
    N b. A vessel not under command
    Y c. A pilot vessel
    N d. A vessel engaged in dredging

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

4872: BOTH INTERNATIONAL & INLAND If you are the stand-on vessel in a crossing situation, you may take action to avoid collision by your maneuver alone. When may this action be taken?

    N a. As soon as you determine that risk of collision exists
    N b. Only when you have reached extremis
    Y c. When it becomes apparent to you that the give-way vessel is not taking appropriate action
    N d. When you determine that your present course will cross ahead of the other vessel

8007: INTERNATIONAL ONLY A towing light is __________.

    N a. shown at the bow
    N b. white in color
    Y c. shown in addition to the stern light
    N d. an all-round light

8064: INTERNATIONAL ONLY You are underway in fog and hear a fog signal consisting of one prolonged and two short blasts. It could be any of the following EXCEPT a vessel __________.

    N a. engaged in mineclearance
    N b. engaged in fishing
    N c. constrained by her draft
    Y d. being towed

8082: INTERNATIONAL ONLY Which statement is TRUE concerning light signals?

    N a. The time between flashes shall be about five seconds.
    N b. The light signals are to be used when not using sound signals.
    Y c. The time between successive signals shall be not less than ten seconds.
    N d. All of the above