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.


8: INLAND ONLY If you were coming up on another power-driven vessel from dead astern and desired to overtake on the other vessel's starboard side, which whistle signal would you sound?


148: INLAND ONLY In a narrow channel, you are underway on vessel "A" and desire to overtake vessel "B". After you sound two short blasts on your whistle, vessel "B" sounds five short and rapid blasts on the whistle. You should __________.


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


152: BOTH INTERNATIONAL & INLAND The vessel showing the day signal is __________. (DIAGRAM 22 )

    N a. A vessel engaged in mine clearance operations
    N b. A fishing vessel with gear extending more than 150 meters horizontally
    N c. A trawler shooting nets in the direction indicated
    Y d. A tug with a tow exceeding 200 meters unable to deviate from course

156: BOTH INTERNATIONAL & INLAND You are underway at night and you sight the lights shown. You know these lights indicate a(n) _________________________ (DIAGRAM 47 )

    N a. vessel towing astern
    Y b. sailing vessel
    N c. submarine operating on the surface
    N d. vessel pushing a barge ahead

177: BOTH INTERNATIONAL & INLAND You see the display of lights shown. This could indicate a __________. (DIAGRAM 64 )

    N a. dredge working at anchor
    N b. dredge restricted in its ability to maneuver
    N c. 55-meter tug towing astern, length of tow exceeds 200 meters
    Y d. 65-meter tug towing astern, length of tow 150 meters

250: INLAND ONLY You are on a power-driven vessel "I" as shown. Vessel "II" is a power-driven vessel engaged in fishing that will pass within 1/2 a mile of your vessel. You sound one short blast on the whistle. Vessel "II" does not sound any signal. Which action should you take? (DIAGRAM 36 )

    N a. Hold course and speed without giving a signal.
    Y b. Sound the danger signal and reduce speed.
    N c. Sound one short blast, reduce speed and turn to starboard.
    N d. Sound two short blasts and change course to port.

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

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

4048: BOTH INTERNATIONAL & INLAND If it becomes necessary for a stand-on vessel to take action to avoid collision, she shall NOT, if possible, __________.

    N a. decrease speed
    N b. increase speed
    Y c. turn to port for a vessel on her own port side
    N d. turn to starboard for a vessel on her own port side

4056: BOTH INTERNATIONAL & INLAND A sailing vessel with the wind abaft the beam is navigating in restricted visibility. She should sound __________.

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

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

4274: BOTH INTERNATIONAL & INLAND During the day, a vessel picking up a submarine cable shall carry __________.

    N a. three shapes, the highest and lowest shall be red balls, and the middle shall be a white diamond
    N b. two black balls
    N c. three shapes; the highest and lowest shall be black balls, and the middle shall be a red diamond
    Y d. three shapes; the highest and lowest shall be black balls and the middle shall be a black diamond

4296: BOTH INTERNATIONAL & INLAND Which power-driven vessel is NOT required to carry a light in the position of the after masthead light?

    N a. A pushing vessel and a vessel being pushed, in a composite unit and 100 meters in length
    N b. A vessel of 60 meters in length towing astern
    Y c. A vessel of 45 meters in length trolling
    N d. Any vessel constrained by her draft

4332: BOTH INTERNATIONAL & INLAND You are the stand-on vessel in a crossing situation. You may hold your course and speed until __________.

    N a. the other vessel takes necessary action
    N b. the other vessel gets to within half a mile of your vessel
    Y c. action by the give-way vessel alone will not prevent collision
    N d. the other vessel gets to within a quarter mile of your vessel

4336: BOTH INTERNATIONAL & INLAND While underway and in sight of another vessel crossing less than .5 mile away, you put your engines full speed astern. Which statement concerning whistle signals is TRUE?

    Y a. You must sound three short blasts on the whistle.
    N b. You must sound one blast if backing to starboard.
    N c. You must sound whistle signals only if the vessels are meeting.
    N d. You need not sound any whistle signals.

4403: BOTH INTERNATIONAL & INLAND What day-shape must be shown by a vessel over 20 meters fishing which has gear extending more than 150 meters horizontally outward from it?

    N a. One black ball
    N b. One diamond shape
    Y c. One cone with its apex upwards
    N d. One basket

4449: BOTH INTERNATIONAL & INLAND In a crossing situation, which vessel may sound the danger signal?

    N a. Give-way vessel
    N b. Stand-on vessel
    Y c. Either vessel
    N d. Neither vessel

4464: BOTH INTERNATIONAL & INLAND A vessel not under command, underway but not making way, would show __________.

    Y a. two all-round red lights in a vertical line
    N b. sidelights
    N c. a stern light
    N d. All of the above

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

4494: BOTH INTERNATIONAL & INLAND An anchored vessel on pilotage duty must show which light(s) at night?

    N a. A stern light only
    N b. Anchor lights only
    N c. A white light over a red light only
    Y d. A white light over a red light and anchor lights

4541: BOTH INTERNATIONAL & INLAND The Rules state that vessels may depart from the Rules when __________.

    N a. there are no other vessels around
    N b. operating in a narrow channel
    N c. the Master enters it in the ship's log
    Y d. necessary to avoid immediate danger

4601: BOTH INTERNATIONAL & INLAND A vessel towing a barge astern would show, at the stern __________.

    N a. only a stern light
    Y b. a towing light above the stern light
    N c. two towing lights in a vertical line
    N d. two white lights in a vertical line

4647: BOTH INTERNATIONAL & INLAND At night a vessel displaying the lights shown is __________. (DIAGRAM 65 )

    N a. fishing
    Y b. anchored
    N c. being towed
    N d. drifting

4669: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning the light used with whistle signals?

    N a. Use of such a light is required.
    Y b. Its purpose is to supplement short blasts of the whistle.
    N c. The light shall have the same characteristics as a masthead light.
    N d. All of the above

4730: INLAND ONLY Which of the following signals may be exhibited by a vessel trawling in close proximity to other fishing vessels?

    Y a. Two white lights in a vertical line
    N b. A red light over a white light in a vertical line
    N c. Two fixed yellow lights in a vertical line
    N d. All of the above

4834: BOTH INTERNATIONAL & INLAND To be considered "engaged in fishing" under the Rules, a vessel must be __________.

    N a. power-driven
    N b. showing lights or shapes for a vessel restricted in its ability to maneuver
    N c. using nets
    Y d. using fishing apparatus which restricts maneuverability

4844: BOTH INTERNATIONAL & INLAND What does the word "breadth" mean in the Rules?

    N a. Breadth on the uppermost continuous deck
    N b. Molded breadth
    Y c. Greatest breadth
    N d. Breadth at the load waterline

8027: INTERNATIONAL ONLY Two prolonged blasts followed by one short blast on the whistle is a signal which could be sounded by a __________.

    N a. fishing vessel
    N b. vessel anchored
    N c. mineclearing vessel
    Y d. vessel overtaking another in a narrow channel

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

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.