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.


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


103: INLAND ONLY Which light display would mark the opening in a pipeline where vessels could pass through?


104: INLAND ONLY Which light(s) shall be shown at night on a moored barge which reduces the navigable width of any channel to less than 80 meters?


190: INLAND ONLY At night, you see the lights shown. They are shown on a __________. (DIAGRAM 75 )

    N a. barge being pushed ahead
    N b. barge being towed astern
    Y c. tug pushing a barge ahead
    N d. tug towing a barge astern

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

    N a. should change course to the right
    N b. should slow down until vessel "A" has passed
    Y c. should hold her course and speed
    N d. may steer various courses and vessel "A" must keep clear

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

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

    Y a. sailing vessel
    N b. vessel on pilotage duty
    N c. vessel engaged in fishing
    N d. power-driven vessel

4030: 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
    Y b. through some exceptional circumstance is unable to maneuver as required by the rules
    N c. by taking action contrary to the rules has created a special circumstance situation
    N d. is moored, aground or anchored in a fairway

4054: BOTH INTERNATIONAL & INLAND A vessel is "engaged in fishing" when __________.

    N a. her gear extends more than 100 meters from the vessel
    N b. she is using any type of gear, other than lines
    Y c. she is using fishing apparatus which restricts her maneuverability
    N d. she has any fishing gear on board

4061: BOTH INTERNATIONAL & INLAND Vessels "A" and "B" are crossing as shown. Which statement is TRUE? (DIAGRAM 26 )

    N a. The vessels should pass starboard to starboard.
    N b. Vessel "B" should pass under the stern of vessel "A".
    N c. Vessel "B" should alter course to the right.
    Y d. Vessel "A" must keep clear of vessel "B".

4101: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning the danger signal?

    Y a. When any vessel fails to understand the intentions of an approaching vessel she must sound the danger signal.
    N b. Only the stand-on vessel can sound the danger signal.
    N c. Distress signals may be used in place of the danger signal.
    N d. The danger signal consists of 4 or more short blasts of the whistle.

4109: BOTH INTERNATIONAL & INLAND A vessel towing in fog shall sound a fog signal of __________.

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

4140: BOTH INTERNATIONAL & INLAND The rule regarding look-outs applies __________.

    N a. in restricted visibility
    N b. between dusk and dawn
    N c. in heavy traffic
    Y d. All of the above

4165: BOTH INTERNATIONAL & INLAND Which statement is TRUE of a 30-meter sailing vessel underway?

    Y a. She must show sidelights and a stern light in restricted visibility.
    N b. She may show an all-round white light at the top of the mast.
    N c. She need not show a stern light if she is showing all-round lights on the mast.
    N d. If she is using propelling machinery, she shall show forward a shape consisting of two cones, apexes together.

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

4327: BOTH INTERNATIONAL & INLAND Two vessels are approaching each other near head on. What action should be taken to avoid collision?

    N a. The first vessel to sight the other should give way.
    N b. The vessel making the slower speed should give way.
    Y c. Both vessels should alter course to starboard.
    N d. Both vessels should alter course to port.

4329: BOTH INTERNATIONAL & INLAND Your vessel is 25 meters long and anchored in restricted visibility. You are required to sound the proper fog signal at intervals of not more than __________.

    N a. 30 seconds
    Y b. one minute
    N c. two minutes
    N d. three minutes

4378: BOTH INTERNATIONAL & INLAND While you are underway, navigation lights must be displayed on your vessel __________.

    Y a. during all periods of restricted visibility
    N b. at all times
    N c. at night only when other vessels may be in the area
    N d. at night only when vessels are detected on radar

4389: BOTH INTERNATIONAL & INLAND An overtaking situation at night would be one in which one vessel sees which light(s) of a vessel ahead?

    N a. Masthead lights and sidelights
    N b. One sidelight, the masthead lights and stern light
    N c. Both sidelights
    Y d. Stern light

4660: BOTH INTERNATIONAL & INLAND In fog you observe your radar and determine that risk of collision exists with a vessel which is 2 miles off your port bow. You should __________.

    N a. stop your engines
    N b. sound the danger signal at two-minute intervals
    N c. hold course and speed until the other vessel is sighted
    Y d. take avoiding action as soon as possible

4663: BOTH INTERNATIONAL & INLAND Which statement is TRUE regarding equipment for bell & gong signals?

    N a. A vessel of less than 12 meters in length need not have any sound signaling equipment.
    Y b. Manual sounding of the signals must always be possible.
    N c. Any vessel over 12 meters in length must be provided with a gong.
    N d. Signals must be able to be sounded manually and automatically.

4724: BOTH INTERNATIONAL & INLAND At night, a vessel displaying the lights shown is __________. (DIAGRAM 65 )

    N a. trawling
    N b. not under command
    Y c. anchored
    N d. drifting

4825: BOTH INTERNATIONAL & INLAND What is a light signal authorized by the Secretary of the Navy as an additional navigational light for a ship of war?

    N a. Two yellow lights in a vertical line for a carrier launching aircraft
    N b. Green masthead and yardarm lights for a vessel engaged in mineclearing operations
    Y c. Flashing amber beacon for submarines
    N d. Yellow flares indicating torpedo firing exercises

4850: BOTH INTERNATIONAL & INLAND The Rules state that risk of collision shall be deemed to exist __________.

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

4863: BOTH INTERNATIONAL & INLAND A sailing vessel is proceeding along a narrow channel and can safely navigate ONLY inside the channel. The sailing vessel approaches a vessel engaged in fishing. Which statement is TRUE?

    N a. The fishing vessel must sound the danger signal.
    Y b. The fishing vessel shall not impede the passage of the sailing vessel.
    N c. Each vessel should move to the edge of the channel on her port side.
    N d. Both vessels should be displaying the signal for a vessel restricted in her ability to maneuver.

4873: BOTH INTERNATIONAL & INLAND In a crossing situation on open waters, a sailing vessel shall keep out of the way of all the following vessels EXCEPT a vessel __________.

    N a. not under command
    N b. restricted in her ability to maneuver
    Y c. engaged in towing
    N d. fishing

6560: BOTH INTERNATIONAL & INLAND A vessel using a traffic separation scheme is forbidden to __________.

    Y a. proceed through an inappropriate traffic lane
    N b. engaged in fishing in the separation zone
    N c. cross a traffic lane
    N d. enter the separation zone, even in a emergency

8051: INTERNATIONAL ONLY A vessel constrained by her draft may display __________.

    Y a. three all-round red lights
    N b. two 225 red lights
    N c. three all-round blue lights
    N d. two 225 blue lights

8074: INTERNATIONAL ONLY Two prolonged blasts followed by one short blast on the whistle is a signal which would be sounded by a vessel __________.

    Y a. overtaking another in a narrow channel
    N b. anchored
    N c. engaged in mineclearance
    N d. engaged in fishing

8111: INTERNATIONAL ONLY Your vessel is backing out of a slip in a harbor. Visibility is restricted. You should sound __________.

    Y a. one prolonged blast only
    N b. one prolonged blast followed by three short blasts when the last line is taken aboard
    N c. one prolonged blast followed by three short blasts when leaving the slip
    N d. the danger signal