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.


9: INLAND ONLY Which statement is TRUE concerning narrow channels?


25: INLAND ONLY In a narrow channel, a power-driven vessel desiring to overtake another power-driven vessel on the other vessel's starboard side will sound a whistle signal of __________.


25: INLAND ONLY In a narrow channel, a power-driven vessel desiring to overtake another power-driven vessel on the other vessel's starboard side will sound a whistle signal of __________.


118: BOTH INTERNATIONAL & INLAND You are on a vessel engaged in fishing, other than trawling, and have gear extending more than 150 meters horizontally from the vessel. Which day-shape must you show in the direction of the outlying gear? (DIAGRAM 16 )

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

143: INLAND ONLY A light used to signal passing intentions must be an __________.

    N a. alternating red and yellow light
    N b. alternating white and yellow light
    Y c. all-round white or yellow light
    N d. all-round white light only

170: BOTH INTERNATIONAL & INLAND You are on a vessel and see ahead the lights shown. They indicate a __________. (DIAGRAM 59 )

    N a. vessel crossing from your starboard
    Y b. vessel crossing from your port
    N c. vessel being overtaken
    N d. vessel meeting head-on

183: BOTH INTERNATIONAL & INLAND Which vessel must show an after masthead light, if over 50 meters in length?

    N a. A vessel engaged in fishing
    N b. A vessel at anchor
    N c. A vessel not under command
    Y d. A vessel trawling

295: BOTH INTERNATIONAL & INLAND The display of lights shown could represent a __________. (DIAGRAM 48 )

    N a. submarine on the surface
    Y b. tug and a barge being towed astern
    N c. vessel restricted in her ability to maneuver
    N d. vessel not under command

351: INTERNATIONAL ONLY Two power-driven vessels are crossing within one half mile of each other as shown. Vessel "A" sounds one short blast of the whistle. This signal means __________. (DIAGRAM 42 )

    Y a. "I am altering my course to starboard"
    N b. "I am operating astern propulsion"
    N c. "I am altering my course to port"
    N d. None of the above

4013: BOTH INTERNATIONAL & INLAND A vessel displaying the day-shapes shown is __________. (DIAGRAM 11 )

    N a. towing
    N b. conducting underwater operations
    N c. drifting
    Y d. aground

4022: BOTH INTERNATIONAL & INLAND A sailing vessel underway may exhibit __________.

    Y a. a red light over a green light at the masthead
    N b. a green light over a red light at the masthead
    N c. two white lights in a vertical line at the stern
    N d. an all-round white light at the bow

4053: BOTH INTERNATIONAL & INLAND Two vessels meeting in a "head-on" situation are directed by the Rules to __________.

    Y a. alter course to starboard and pass port to port
    N b. alter course to port and pass starboard to starboard
    N c. decide on which side the passage will occur by matching whistle signals
    N d. slow to bare steerageway

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.

4118: BOTH INTERNATIONAL & INLAND When should the fog signal of a manned vessel under tow be sounded?

    Y a. After the towing vessel's fog signal
    N b. Before the towing vessel's fog signal
    N c. Approximately one minute after the towing vessel's fog signal
    N d. If the towing vessel is sounding a fog signal, the manned vessel being towed is not required to sound any fog signal.

4159: BOTH INTERNATIONAL & INLAND A power-driven vessel underway shall keep out of the way of a __________.

    N a. vessel not under command
    N b. vessel engaged in fishing
    N c. sailing vessel
    Y d. All of the above

4182: BOTH INTERNATIONAL & INLAND Distress signals may be __________.

    N a. red flares
    N b. smoke signals
    N c. sound signals
    Y d. Any of the above

4256: BOTH INTERNATIONAL & INLAND Traffic separation schemes established by the International Maritime Organization __________.

    Y a. provide inbound and outbound lanes to promote the safe flow of vessel traffic
    N b. provide vessel reporting systems to assist in search and rescue in the event of a vessel casualty
    N c. provide routing and vessel scheduling procedures to reduce shipping delays
    N d. prohibit vessels carrying hazardous cargos from entering waters that are environmentally sensitive

4260: BOTH INTERNATIONAL & INLAND The minimum length of a power-driven vessel that must show forward and after masthead lights is __________.

    N a. 30 meters
    Y b. 50 meters
    N c. 75 meters
    N d. 100 meters

4286: BOTH INTERNATIONAL & INLAND A vessel which is underway at night and displaying the lights shown is __________. (DIAGRAM 69 )

    Y a. engaged in trawling
    N b. minesweeping
    N c. under sail
    N d. a pilot boat

4347: BOTH INTERNATIONAL & INLAND To determine if risk of collision exists, a vessel which is fitted with radar must use __________.

    N a. radar scanning
    N b. radar plotting
    N c. compass bearings
    Y d. All of the above

4386: BOTH INTERNATIONAL & INLAND While underway in fog you hear a rapid ringing of a bell ahead. This bell indicates a __________.

    Y a. vessel at anchor
    N b. vessel in distress
    N c. sailboat underway
    N d. vessel backing out of a berth

4423: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning a "vessel engaged in fishing"?

    Y a. The vessel may be using nets, lines, or trawls.
    N b. The vessel may be trolling.
    N c. The vessel shows 2 lights in a vertical line, white over red.
    N d. The vessel sounds the same fog signal as a vessel underway, making no way.

4453: BOTH INTERNATIONAL & INLAND Vessels "A" and "B" are crossing as shown. Which statement is TRUE? (DIAGRAM 30 )

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

4455: BOTH INTERNATIONAL & INLAND Which vessel is "underway" within the meaning of the Rules?

    N a. A vessel at anchor with the engine turning
    N b. A vessel tied to an offshore mooring buoy
    N c. A vessel aground with the engine turning
    Y d. A vessel drifting with the engine stopped

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.

4615: BOTH INTERNATIONAL & INLAND A pilot vessel may continue to sound an identity signal if she is __________.

    Y a. underway, but not making way
    N b. aground
    N c. being towed
    N d. not engaged in pilotage duty

4638: BOTH INTERNATIONAL & INLAND A power-driven vessel is underway and fishing with trolling lines. This vessel __________.

    Y a. must keep out of the way of sailing vessels
    N b. must sound a one prolonged, two short blasts signal in restricted visibility
    N c. is the stand-on vessel when overtaking power-driven vessels
    N d. All of the above

4642: BOTH INTERNATIONAL & INLAND By radar alone, you detect a vessel ahead on a collision course, about 3 miles distant. Your radar plot shows this to be a meeting situation. You should __________.

    N a. turn to port
    Y b. turn to starboard
    N c. maintain course and speed and sound the danger signal
    N d. maintain course and speed and sound no signal

4670: BOTH INTERNATIONAL & INLAND What determines if a vessel is "restricted in her ability to maneuver"?

    N a. Whether or not all of the vessel's control equipment is in working order
    N b. The vessel's draft in relation to the available depth of water
    Y c. Whether the nature of the vessel's work limits maneuverability required by the Rules
    N d. Whether or not the vessel is the give-way vessel in a meeting situation

8118: INTERNATIONAL ONLY A signal of intent must be sounded in international waters by __________.

    N a. a vessel meeting another head-on
    Y b. a vessel overtaking another in a narrow channel
    N c. a vessel crossing the course of another
    N d. the give-way vessel in a crossing situation