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.


14: INLAND ONLY You have made your vessel up to a tow and are moving from a pier out into the main channel. Your engines are turning ahead. What whistle signal should you sound?


97: INLAND ONLY Which statement is TRUE concerning a passing agreement made by radiotelephone?


119: INLAND ONLY What MAY be used to indicate the presence of a partly submerged object being towed?


132: INLAND ONLY Which statement is TRUE of a power-driven vessel proceeding downbound with the current, when meeting an upbound vessel on the Western Rivers?

    N a. She shall not impede the upbound vessel.
    N b. She shall pass on the port side of the other.
    Y c. She shall propose the manner of passage.
    N d. All of the above

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

    Y a. NW
    N b. SW
    N c. NE
    N d. SE

193: BOTH INTERNATIONAL & INLAND You are on vessel "B" and crossing a narrow channel. Vessel "A", who can only navigate within the channel, is on your port bow and crossing as shown. Which action should you take? (DIAGRAM 40 )

    N a. Maintain course and speed as the ship is on your port bow.
    Y b. Give way to the other vessel.
    N c. Increase speed and cross his bow.
    N d. Sound the danger signal.

195: BOTH INTERNATIONAL & INLAND At night, you see the lights shown. This would indicate a vessel __________. (DIAGRAM 78 )

    N a. restricted in her ability to maneuver
    N b. engaged in fishing and making way
    Y c. on pilotage duty and underway
    N d. not under command

207: INLAND ONLY What lights are required for a single barge being towed alongside?

    N a. Sidelights and a stern light
    Y b. Sidelights, a special flashing light, and a stern light
    N c. Sidelights and a special flashing light
    N d. Sidelights, a towing light, and a stern 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

282: INLAND ONLY While underway you sight the lights shown with the yellow lights flashing. The lights displayed are from a __________. (DIAGRAM 81 )

    N a. vessel not under command
    Y b. dredge pipeline
    N c. vessel aground
    N d. vessel engaged in fishing

326: BOTH INTERNATIONAL & INLAND Diagram "A" shows the arc of visibility of a __________. (DIAGRAM 23 )

    N a. white masthead light
    Y b. red sidelight
    N c. green sidelight
    N d. stern light

366: 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. give-way vessel
    Y b. stand-on vessel
    N c. overtaking vessel
    N d. burdened vessel

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

4141: BOTH INTERNATIONAL & INLAND While underway and towing, your vessel enters fog. Which fog signal should you sound?

    N a. One prolonged blast
    N b. Two prolonged blasts
    Y c. One prolonged blast and two short blasts
    N d. Three distinct blasts

4166: BOTH INTERNATIONAL & INLAND A power-driven vessel towing another vessel astern (tow less than 200 meters) shall show __________.

    N a. three masthead lights in a vertical line instead of either the forward or after masthead light
    Y b. two masthead lights in a vertical line instead of either the forward or after masthead lights
    N c. two towing lights in a vertical line at the stern
    N d. a small white light aft of the funnel

4218: BOTH INTERNATIONAL & INLAND A vessel displaying the day signal shown is __________. (DIAGRAM 7 )

    Y a. not under command
    N b. a dredge underway and dredging
    N c. fishing
    N d. a hydrographic survey vessel underway

4295: BOTH INTERNATIONAL & INLAND The use of the danger signal __________.

    N a. replaces directional signals
    N b. makes the other vessel the stand-on vessel
    Y c. indicates doubt as to another vessels actions
    N d. is the same as a "MAYDAY" signal

4322: BOTH INTERNATIONAL & INLAND In which situation do you think a risk of collision exists?

    N a. A vessel is 22 on your port bow, range increasing, bearing changing slightly to the right.
    N b. A vessel is broad on your starboard beam, range decreasing, bearing changing rapidly to the right.
    N c. A vessel is 22 abaft your port beam, range increasing, bearing is constant.
    Y d. A vessel is on your starboard quarter, range decreasing, bearing is constant.

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

4485: BOTH INTERNATIONAL & INLAND You are underway in reduced visibility. You hear the fog signal of another vessel about 20 on your starboard bow. Risk of collision may exist. You should __________.

    N a. alter course to starboard to pass around the other vessel
    Y b. reduce your speed to bare steerageway
    N c. slow your engines and let the other vessel pass ahead of you
    N d. alter course to port to pass the other vessel on its portside

4501: BOTH INTERNATIONAL & INLAND For identification purposes at night, U.S. Navy submarines on the surface may display an intermittent flashing light of which color?

    Y a. Amber (yellow)
    N b. White
    N c. Blue
    N d. Red

4577: BOTH INTERNATIONAL & INLAND Which statement about the Navigation Rules is TRUE?

    N a. The rules require vessels to comply with Traffic Separation Scheme regulations.
    N b. The rules use the term "safe speed."
    N c. The Rules permit a stand-on vessel to take action prior to being in extremis.
    Y d. All of the above are correct.

4578: BOTH INTERNATIONAL & INLAND A "short blast" on the whistle has a duration of __________.

    Y a. 1 second
    N b. 4 to 6 seconds
    N c. 8 to 12 seconds
    N d. 12 to 15 seconds

4600: BOTH INTERNATIONAL & INLAND Which vessel would sound a fog signal consisting of the ringing of a bell for 5 seconds?

    N a. A vessel engaged in fishing, at anchor
    N b. A vessel restricted in its ability to maneuver, at anchor
    Y c. A sailing vessel, at anchor
    N d. A sailing vessel becalmed

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

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

4745: BOTH INTERNATIONAL & INLAND You are approaching a narrow channel. Another vessel in the channel can only be navigated safely in that channel. You should __________.

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

4866: BOTH INTERNATIONAL & INLAND If two sailing vessels are running free with the wind on the same side, which one must keep clear of the other?

    N a. The one with the wind closest abeam
    Y b. The one to windward
    N c. The one to leeward
    N d. The one that sounds the first whistle signal

8014: INTERNATIONAL ONLY A power-driven vessel leaving a quay or wharf must sound what signal?

    N a. Three short blasts
    N b. A long blast
    N c. A prolonged blast
    Y d. No signal is required.

8067: INTERNATIONAL ONLY Which vessel shall avoid impeding the safe passage of a vessel constrained by her draft?

    N a. A vessel not under command
    Y b. A fishing vessel
    N c. A vessel restricted in her ability to maneuver
    N d. All of the above