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.


151: BOTH INTERNATIONAL & INLAND Which vessel is indicated by the day signal shown? (DIAGRAM 22 )


243: INTERNATIONAL ONLY You are on vessel "A" as shown. Vessel "B" sounds two short blasts. You should __________. (DIAGRAM 32 )


260: INLAND ONLY A vessel engaged in public safety activities may display an alternately flashing red and yellow light. This special light may be used by a vessel engaged in __________.


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

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

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

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

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

    N a. vessel aground
    N b. submarine on the surface
    N c. vessel engaged in trawling
    Y d. vessel under oars

4017: BOTH INTERNATIONAL & INLAND A 200-meter vessel is aground in fog. Which signal is optional?

    N a. A bell signal
    N b. A gong signal
    Y c. A whistle signal
    N d. All of the above

4063: BOTH INTERNATIONAL & INLAND There are two classes of vessels which, to the extent necessary to carry out their work, do not have to comply with the rule regarding traffic separation schemes. One of these is a vessel __________.

    N a. engaged in fishing in a traffic lane
    Y b. servicing a submarine cable
    N c. towing another
    N d. engaged on pilotage duty

4070: BOTH INTERNATIONAL & INLAND You are underway and hear a vessel continuously sounding her fog whistle. This indicates the other vessel __________.

    N a. desires to communicate by radio
    N b. desires a pilot
    Y c. is in distress
    N d. is aground

4127: BOTH INTERNATIONAL & INLAND A vessel will NOT show sidelights when __________.

    N a. underway but not making way
    N b. making way, not under command
    Y c. not under command, not making way
    N d. trolling underway

4155: BOTH INTERNATIONAL & INLAND A vessel towing is showing three forward white masthead lights in a vertical line. This means that the length of the __________.

    N a. towing vessel is less than 50 meters
    N b. towing vessel is greater than 50 meters
    N c. tow is less than 200 meters
    Y d. tow is greater than 200 meters

4171: BOTH INTERNATIONAL & INLAND A vessel engaged in fishing, and at anchor, shall show __________.

    N a. an anchor light
    N b. sidelights and a stern light
    N c. three lights in a vertical line, the highest and lowest being red, and the middle being white
    Y d. None of the above

4186: BOTH INTERNATIONAL & INLAND A vessel fishing should display which of the day signals shown. (DIAGRAM 1 )

    N a. A
    Y b. B
    N c. C
    N d. D

4203: BOTH INTERNATIONAL & INLAND If you hear the firing of a gun at one minute intervals from another vessel, this indicates that __________.

    N a. the gun is being used to sound passing signals
    Y b. the vessel is in distress
    N c. all vessels are to clear the area
    N d. all is clear and it is safe to pass

4205: BOTH INTERNATIONAL & INLAND A towing vessel is towing two barges astern. The length of the tow from the stern of the tug to the stern of the last barge is 250 meters. The towing vessel is 45 meters in length. How many white masthead lights should be displayed on the tugboat at night?

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

4212: BOTH INTERNATIONAL & INLAND While underway your vessel approaches a bend in a river where, due to the bank, you cannot see around the bend. You should __________.

    N a. keep to the starboard side of the channel and sound one short blast
    N b. sound the danger signal
    Y c. sound one prolonged blast
    N d. slow your vessel to bare steerageway

4310: BOTH INTERNATIONAL & INLAND Which vessel is to be regarded as a vessel "restricted in her ability to maneuver"?

    N a. A vessel fishing with trawls
    N b. A vessel which has lost the use of her steering gear
    N c. A vessel with a draft of such depth that she cannot change her course
    Y d. A vessel engaged in mineclearing

4331: BOTH INTERNATIONAL & INLAND You see the lights shown. What would it be? (DIAGRAM 77 )

    N a. A vessel pushing barges ahead
    Y b. A vessel towing barges astern
    N c. A pipeline
    N d. A stationary dredge

4342: BOTH INTERNATIONAL & INLAND The lights prescribed by the Rules shall be exhibited __________.

    Y a. from sunrise to sunset in restricted visibility
    N b. at all times
    N c. from sunset to sunrise, and at no other time
    N d. whenever a look-out is posted

4382: BOTH INTERNATIONAL & INLAND While underway in fog, you hear a vessel sound four short blasts in succession. What does this signal indicate?

    Y a. A pilot vessel
    N b. A vessel being towed
    N c. A vessel fishing
    N d. A sailboat

4467: BOTH INTERNATIONAL & INLAND Under the Rules, the term "vessel" includes __________.

    N a. non-self-propelled raft
    N b. seaplanes
    N c. hovercrafts
    Y d. All of the above

4473: BOTH INTERNATIONAL & INLAND A head-on situation at night is one in which you see dead ahead a vessel showing __________.

    N a. one sidelight
    N b. one sidelight and a masthead light
    N c. one sidelight and two masthead lights
    Y d. both sidelights of a vessel and her masthead light(s)

4527: BOTH INTERNATIONAL & INLAND You are fishing at night, and you sight a vessel showing three lights in a vertical line. The upper and lower lights are red and the middle light is white. Which statement is TRUE?

    Y a. You must keep out of the way of the other vessel.
    N b. The other vessel is responsible to keep out of your way.
    N c. The other vessel is at anchor.
    N d. The rule of special circumstances applies.

4548: BOTH INTERNATIONAL & INLAND Which statement is TRUE regarding equipment for sound signals?

    N a. A vessel of less than 12 meters in length need not have any sound signaling equipment.
    N b. Any vessel over 12 meters in length must be provided with a gong.
    Y c. Manual sounding of the bell and gong must always be possible.
    N d. Automatic sounding of the signals is not permitted.

4565: BOTH INTERNATIONAL & INLAND You are approaching a bend in a river where, due to the bank, you cannot see around the other side. A vessel on the other side of the bend sounds one prolonged blast. You should __________.

    N a. sound passing signals
    N b. not sound any signal until you sight the other vessel
    Y c. sound a prolonged blast
    N d. sound the danger signal

4628: BOTH INTERNATIONAL & INLAND A sailing vessel displaying the day-shape shown is indicating that she is __________. (DIAGRAM 35 )

    Y a. being propelled by power as well as sail
    N b. on a starboard tack
    N c. close-hauled and has difficulty maneuvering
    N d. fishing as well as sailing

4632: BOTH INTERNATIONAL & INLAND The Rules state that a seaplane shall __________.

    N a. not be regarded as a vessel
    Y b. in general, keep well clear of all vessels
    N c. proceed at a slower speed than surrounding vessels
    N d. when making way, show the lights for a vessel not under command

4736: BOTH INTERNATIONAL & INLAND In restricted visibility a towed vessel must sound a fog signal when it is _____________ .

    N a. the last vessel in the tow
    Y b. the last vessel in the tow and it is carrying a crew
    N c. manned, regardless of its position in the tow
    N d. None of the above are correct

4856: BOTH INTERNATIONAL & INLAND When in sight of another vessel and there is sufficient sea room, any action taken to avoid collision must __________.

    N a. be accompanied by sound signals
    Y b. not result in another close quarters situation
    N c. include a speed change
    N d. All of the above

8105: INTERNATIONAL ONLY Your vessel is crossing a narrow channel. A vessel to port is within the channel and crossing your course. She is showing a black cylinder. You should __________.

    N a. hold your course and speed
    Y b. not impede the other vessel
    N c. exchange passing signals
    N d. sound the danger signal