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.


6: INLAND ONLY A vessel displaying a flashing blue light is __________.


31: INLAND ONLY At night, a light signal consisting of two flashes by a vessel indicates __________.


68: INLAND ONLY Which is CORRECT regarding a "special flashing light"?


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

    N a. Such an agreement is prohibited by the Rules.
    N b. A vessel which has made such an agreement must also sound whistle signals.
    N c. Whistle signals must still be exchanged when passing within half a mile of each other.
    Y d. If agreement is reached by radiotelephone, whistle signals are optional.

105: INLAND ONLY You are overtaking another power-driven vessel in a narrow channel. The other vessel will have to move to allow you to pass. You wish to overtake the other vessel and leave her on your starboard side. Your FIRST whistle signal should be __________.

    N a. one short blast
    Y b. two short blasts
    N c. two prolonged blasts followed by one short blast
    N d. two prolonged blasts followed by two short blasts

131: INLAND ONLY You are navigating in a narrow channel and must remain in the channel for safe operation. Another vessel is crossing the channel ahead of you from your starboard. You are doubtful of intention of the crossing vessel. You MUST __________.

    N a. stop your vessel, since the other vessel has the right of way
    Y b. sound the danger signal
    N c. contact him on the radiotelephone to make a passing agreement
    N d. stop your engines until you have slowed to bare steerageway

158: BOTH INTERNATIONAL & INLAND The lights shown are exhibited by a vessel __________. (DIAGRAM 49 )

    N a. dredging while underway
    Y b. not under command
    N c. engaged in trawling
    N d. engaged in mineclearance

175: BOTH INTERNATIONAL & INLAND You see the display of lights shown. They indicate a vessel __________. (DIAGRAM 71 )

    N a. trawling
    Y b. approaching head-on
    N c. fishing with nets extending more than 150 meters
    N d. dredging

205: INTERNATIONAL ONLY Which whistle signal may be sounded by one of two vessels in sight of each other?

    N a. Four short blasts
    N b. One prolonged blast
    Y c. One short blast
    N d. One short, one prolonged, and one short blast

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 __________.

    Y a. search and rescue
    N b. restricted in ability to maneuver
    N c. not under command
    N d. river bank protection

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

    Y a. tug and a barge being towed astern
    N b. sailing vessel
    N c. a vessel not under command
    N d. a submarine on the surface

318: BOTH INTERNATIONAL & INLAND Which dayshape(s) would be displayed by the vessel engaged in the operation indicated by the lights shown. (DIAGRAM 82 )

    Y a. two cones with apexes together
    N b. a ball, a diamond and another ball
    N c. a cylinder
    N d. a diamond

4020: BOTH INTERNATIONAL & INLAND A vessel must proceed at a safe speed __________.

    N a. in restricted visibility
    N b. in congested waters
    N c. during darkness
    Y d. at all times

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

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

4057: BOTH INTERNATIONAL & INLAND You see a vessel displaying the code flag "LIMA" below which is a red ball. The vessel is __________.

    N a. trolling
    N b. getting ready to receive aircraft
    N c. aground
    Y d. in distress

4097: BOTH INTERNATIONAL & INLAND When navigating in restricted visibility, a power-driven vessel shall __________.

    N a. stop her engines when hearing a fog signal forward of her beam, even if risk of collision does not exist
    Y b. have her engines ready for immediate maneuver
    N c. when making way, sound one prolonged blast at intervals of not more than one minute
    N d. operate at a speed to be able to stop in the distance of her visibility

4239: BOTH INTERNATIONAL & INLAND You are on a vessel nearing a bend in the channel where, because of the height of the bank, you cannot see a vessel approaching from the opposite direction. You should sound __________.

    N a. one short blast
    Y b. one prolonged blast
    N c. one long blast
    N d. five or more short blasts

4328: BOTH INTERNATIONAL & INLAND A vessel displaying the day-shape shown __________. (DIAGRAM 10 )

    N a. is at anchor
    N b. is not under command
    Y c. has a tow that exceeds 200 meters in length
    N d. has a tow that is carrying dangerous cargo

4377: BOTH INTERNATIONAL & INLAND The term "prolonged blast" means a blast of __________.

    N a. two to four seconds duration
    Y b. four to six seconds duration
    N c. six to eight seconds duration
    N d. eight to ten seconds duration

4385: BOTH INTERNATIONAL & INLAND To be considered "engaged in fishing" according to the Rules of the Road, a vessel must be __________.

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

4444: BOTH INTERNATIONAL & INLAND Which vessel must exhibit a conical shape, apex downwards?

    N a. A 10-meter vessel engaged in fishing
    Y b. A 15-meter vessel proceeding under sail when also being propelled by machinery
    N c. A 20-meter vessel restricted in her ability to maneuver
    N d. All of the above

4452: BOTH INTERNATIONAL & INLAND You are underway in fog and you hear three distinct bell strokes followed by five seconds of rapid bell ringing followed by three distinct bell strokes. This signal indicates a vessel __________.

    Y a. aground
    N b. engaged in underwater construction
    N c. at anchor
    N d. in distress

4454: BOTH INTERNATIONAL & INLAND In a crossing situation, a stand-on vessel which is forced to take action in order to avoid collision with a vessel on her own port side shall, if possible, avoid __________.

    Y a. turning to port
    N b. turning to starboard
    N c. decreasing speed
    N d. increasing speed

4465: BOTH INTERNATIONAL & INLAND Traffic separation schemes __________.

    N a. provide routing and scheduling procedures to reduce shipping delays
    N b. provide traffic patterns in congested areas, so that vessels can operate without having a separate lookout
    Y c. provide inbound and outbound lanes to promote the safe flow of vessel traffic
    N d. prohibit vessels carrying hazardous cargoes from entering waters that are environmentally sensitive

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

4678: BOTH INTERNATIONAL & INLAND Which is a light signal authorized by the Secretary of the Navy as an additional navigational light for a ship of war?

    Y a. Intermittent flashing amber (yellow) beacon for submarines
    N b. Green masthead and yardarm lights indicating mine clearance operations
    N c. Red-white-red lights in a vertical line for a carrier, launching aircraft
    N d. Yellow flares indicating torpedo firing exercises

4681: BOTH INTERNATIONAL & INLAND A vessel may exhibit lights other than those prescribed by the Rules as long as the additional lights __________.

    N a. are not the same color as either side light
    N b. have a lesser range of visibility than the prescribed lights
    Y c. do not impair the visibility or distinctive character of the prescribed lights
    N d. All of the above

4703: BOTH INTERNATIONAL & INLAND A towing light is a yellow light having the same characteristics as a(n) __________.

    N a. special flashing light
    N b. anchor light
    Y c. stern light
    N d. masthead light

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