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.


108: 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 and leave her on your starboard side. Your first whistle signal should be __________.


149: INLAND ONLY A power-driven vessel pushing ahead or towing alongside on the Mississippi River, above the Huey P. Long Bridge, shall carry __________.


194: BOTH INTERNATIONAL & INLAND You are on vessel "A" and proceeding down a narrow channel as shown. You can only navigate within the channel and vessel "B" is crossing so as to involve risk of collision. Which action would be most prudent? (DIAGRAM 40 )


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

    N a. give-way vessel
    Y b. vessel being overtaken
    N c. passing vessel
    N d. None of the above

233: BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown. and will pass without changing course. Vessel "B" is an air-cushion vessel operating in the nondisplacement mode. Which light will vessel "A" observe from vessel "B"? (DIAGRAM 17 )

    N a. Green light
    N b. flashing red light
    Y c. flashing yellow light
    N d. flashing white light

277: INLAND ONLY While underway you sight the lights shown with the yellow lights flashing. The lights displayed should be __________. (DIAGRAM 81 )

    Y a. visible at night and during periods of restricted visibility
    N b. visible for at least one mile
    N c. more than 50 meters apart
    N d. flashing at intervals of 120 flashes per minute

388: BOTH INTERNATIONAL & INLAND Lighting requirements in inland waters are different from those in international waters for __________.

    N a. barges being pushed ahead
    N b. vessels being towed alongside
    N c. vessels pushing ahead
    Y d. All of the above

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

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

4020: BOTH INTERNATIONAL & INLAND A vessel must proceed at a safe speed __________.

    N a. in restricted visibility
    N b. in congested waters
    N c. during darkness
    Y d. at all times

4152: BOTH INTERNATIONAL & INLAND A power-driven vessel with a 150-meter stern tow shall display __________.

    N a. three masthead lights in a vertical line
    Y b. a towing light above the stern light
    N c. two towing lights in a vertical line
    N d. a red light over a white light at the masthead

4176: BOTH INTERNATIONAL & INLAND Two all-round red lights displayed in a vertical line are shown by a vessel __________.

    N a. being towed
    N b. pushing a barge ahead
    N c. at anchor
    Y d. not under command

4189: BOTH INTERNATIONAL & INLAND You see a vessel displaying the day signal shown. The vessel may be __________. (DIAGRAM 6 )

    N a. not under command
    N b. fishing with trawls
    Y c. laying cable
    N d. aground

4192: BOTH INTERNATIONAL & INLAND In restricted visibility, a vessel fishing with nets shall sound at intervals of two minutes __________.

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

4196: BOTH INTERNATIONAL & INLAND What lights must be shown on a barge being towed astern at night?

    N a. A white light at each corner
    N b. A white light fore and aft
    Y c. Sidelights and a stern light
    N d. A stern light only

4265: BOTH INTERNATIONAL & INLAND While underway and pushing a barge ahead, your vessel enters a heavy rain storm. You should sound __________.

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

4365: BOTH INTERNATIONAL & INLAND An anchored vessel is servicing an aid to navigation and is restricted in her ability to maneuver. Which lights will she show?

    Y a. Three lights in a vertical line, the highest and lowest red and the middle white, and anchor lights
    N b. Three lights in a vertical line, the highest and lowest red and the middle white, ONLY
    N c. Anchor lights ONLY
    N d. Anchor lights and sidelights ONLY

4404: BOTH INTERNATIONAL & INLAND A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to change course shall, when making way, exhibit __________.

    N a. the masthead lights for a towing vessel
    N b. the lights for a vessel restricted in its ability to maneuver
    N c. sidelights, stern light and towing light
    Y d. All of the above

4525: BOTH INTERNATIONAL & INLAND Sailing vessels are stand-on over power-driven vessels except __________.

    N a. in a crossing situation
    N b. in a meeting situation
    Y c. when they are the overtaking vessel
    N d. on the inland waters of the U.S.

4559: BOTH INTERNATIONAL & INLAND A vessel aground at night is required to show two red lights in a vertical line as well as __________.

    N a. not under command lights
    N b. restricted in her ability to maneuver lights
    Y c. anchor lights
    N d. sidelights and a stern light

4614: BOTH INTERNATIONAL & INLAND Which vessel may show identifying lights when not actually engaged in her occupation?

    N a. A fishing vessel
    N b. A pilot vessel
    N c. A mineclearance vessel
    Y d. None of the above

4623: BOTH INTERNATIONAL & INLAND A towing vessel 35 meters in length, with a tow 100 meters astern, must show a minimum of how many masthead lights?

    N a. 1
    Y b. 2
    N c. 3
    N d. 4

4624: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown could be a vessel __________. (DIAGRAM 56 )

    N a. towing a barge alongside
    Y b. underway and laying cable
    N c. at anchor and dredging
    N d. underway and carrying dangerous cargo

4631: BOTH INTERNATIONAL & INLAND Two barges are being pushed ahead by a tugboat. Which statement is TRUE concerning lights on the barges?

    N a. Each vessel should show sidelights.
    N b. Each vessel should show at least one white light.
    N c. The barges should be lighted as separate units.
    Y d. The barges should be lighted as one vessel.

4639: BOTH INTERNATIONAL & INLAND At night you sight a vessel displaying a single green light. This is a __________.

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

4737: BOTH INTERNATIONAL & INLAND You are approaching a narrow channel. Another vessel in the channel can only be navigated safely in that channel. You should __________.

    Y a. not cross the channel if you might impede the other vessel
    N b. hold your course and speed if she is on your port bow
    N c. sound three short blasts, and take all way off your vessel
    N d. sound two prolonged blasts followed by one short blast

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

4852: BOTH INTERNATIONAL & INLAND What is TRUE when operating in fog and other vessels are detected by radar?

    N a. You should make an ample change to port for a vessel crossing on the starboard bow.
    Y b. You should maneuver in ample time if a close-quarters situation is developing.
    N c. You should determine the course and speed of all radar contacts at six minute intervals.
    N d. Long-range scanning will provide early warning of ALL other vessels within the radar's range.

8024: INTERNATIONAL ONLY Which signal is required to be sounded by a power-driven vessel ONLY?

    Y a. A signal meaning, "I am altering my course to starboard."
    N b. A signal meaning, "I intend to overtake you on your starboard side."
    N c. A signal meaning that the vessel sounding it is in doubt as to the other vessel's actions.
    N d. A signal sounded when approaching a bend.

8070: INTERNATIONAL ONLY In addition to her running lights, an underway vessel constrained by her draft may carry in a vertical line __________.

    N a. a red light, a white light, and a red light
    N b. two red lights
    N c. two white lights
    Y d. three red lights

8127: INTERNATIONAL ONLY Which statement is TRUE, according to the Rules?

    N a. A vessel constrained by her draft shall keep out of the way of a vessel engaged in fishing.
    Y b. 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 c. A vessel not under command shall avoid impeding the safe passage of a vessel constrained by her draft.
    N d. A vessel not under command shall keep out of the way of a vessel restricted in her ability to maneuver.