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.


29: INLAND ONLY A fleet of moored barges extends into a navigable channel. What is the color of the lights on the barges?


32: INLAND ONLY You are overtaking a power-driven vessel in a narrow channel and wish to leave her on your starboard side. You may __________.


82: INLAND ONLY A vessel leaving a dock or berth must sound a prolonged blast of the whistle only if __________.


134: INLAND ONLY Which is TRUE of a vessel downbound with a following current when meeting an upbound vessel on the Western Rivers?

    N a. Neither vessel has the right-of-way.
    Y b. She has the right-of-way only if she is power-driven.
    N c. She does not have the right-of-way, since the other vessel is not crossing the river.
    N d. She must wait for a whistle signal from the upbound vessel.

136: INLAND ONLY Yellow lights are NOT used to identify __________.

    N a. a dredge pipeline on a trestle
    N b. the heads of tows being pushed ahead by tugboats
    N c. purse seiners
    Y d. a seaplane on the water

190: INLAND ONLY At night, you see the lights shown. They are shown on a __________. (DIAGRAM 75 )

    N a. barge being pushed ahead
    N b. barge being towed astern
    Y c. tug pushing a barge ahead
    N d. tug towing a barge astern

221: INLAND ONLY A barge more than 50 meters long would be required to show how many white anchor lights when anchored in a Secretary approved "special anchorage area"?

    N a. None
    N b. 3
    Y c. 2
    N d. 1

233: BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown. and will pass without changing course. Vessel "B" is an air-cushion vessel operating in the nondisplacement mode. Which light will vessel "A" observe from vessel "B"? (DIAGRAM 17 )

    N a. Green light
    N b. flashing red light
    Y c. flashing yellow light
    N d. flashing white light

4009: BOTH INTERNATIONAL & INLAND Your 15-meter tug is underway and crossing a deep and narrow channel. A large container vessel is off your port bow on a steady bearing. Which statement is TRUE concerning this situation?

    N a. You should maintain course and speed.
    N b. The container vessel is the stand-on as it is the larger vessel.
    Y c. You are not to impede the safe passage of the container vessel in the channel.
    N d. None of the above

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

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

4224: BOTH INTERNATIONAL & INLAND A power-driven vessel has on her port side a sailing vessel which is on a collision course. The power-driven vessel is required to __________.

    N a. maintain course and speed
    Y b. keep clear
    N c. sound one blast and turn to starboard
    N d. stop her engines

4273: BOTH INTERNATIONAL & INLAND Which vessel is NOT classified as "restricted in her ability to maneuver"?

    N a. A vessel picking up a navigation mark
    N b. A vessel transferring cargo while underway
    Y c. A vessel whose anchor is fouled
    N d. A vessel in a towing operation that restricts the ability of the vessel and her tow to change their course

4297: BOTH INTERNATIONAL & INLAND Which requirement must be met in order for a stand-on vessel to take action to avoid collision?

    Y a. Risk of collision must exist.
    N b. The give-way vessel must have taken action first.
    N c. The vessels must be within half a mile of each other.
    N d. There are no requirements to be met. The stand-on vessel may take action anytime.

4373: BOTH INTERNATIONAL & INLAND A lantern combining the two sidelights and stern light may be shown on a __________.

    Y a. 10-meter sailing vessel
    N b. 20-meter vessel engaged in fishing and making way
    N c. 25-meter power-driven vessel engaged in trolling
    N d. 25-meter pilot vessel

4375: BOTH INTERNATIONAL & INLAND You are underway in fog when you hear a signal of three strokes of a bell, a rapid ringing of the bell, and three more strokes of the bell. This signal indicates a vessel __________.

    N a. at anchor, giving warning
    Y b. aground
    N c. at anchor, greater than 100 meters
    N d. not under command at anchor

4447: BOTH INTERNATIONAL & INLAND A rigid replica of the International Code flag "A" may be shown by a vessel __________.

    N a. pulling a submarine cable
    Y b. engaged in diving operations
    N c. engaged in underway replenishment
    N d. transferring explosives

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

4492: BOTH INTERNATIONAL & INLAND You sight another power-driven vessel dead-ahead showing both the red and green sidelights. The required action to take would be to __________.

    N a. carefully watch his compass bearing
    N b. start a radar plot in order to ascertain his course
    N c. alter your course to port
    Y d. alter your course to starboard

4590: BOTH INTERNATIONAL & INLAND A vessel being towed, if manned, shall sound a fog signal of __________.

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

4596: BOTH INTERNATIONAL & INLAND A vessel displaying the day-shape is __________. (DIAGRAM 13 )

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

4699: BOTH INTERNATIONAL & INLAND What is the identity signal which may be sounded by a vessel engaged on pilotage duty in fog?

    N a. 2 short blasts
    N b. 3 short blasts
    Y c. 4 short blasts
    N d. 5 short blasts

4706: BOTH INTERNATIONAL & INLAND A "flashing light" is a light that __________.

    Y a. flashes at regular intervals at a frequency of 120 flashes or more per minute
    N b. is yellow in color
    N c. is visible over an arc of the horizon of not less than 180° nor more than 225°
    N d. All of the above

4826: BOTH INTERNATIONAL & INLAND According to the Navigation Rules, you may depart from the Rules when __________.

    Y a. you do so to avoid immediate danger
    N b. no vessels are visible on radar
    N c. you are in a close quarters situation
    N d. out of sight of land

4829: BOTH INTERNATIONAL & INLAND The term "restricted visibility", when used in the Rules, refers to __________.

    N a. situations when you can see vessels on radar that you cannot see visually
    N b. visibility of less than half a mile
    Y c. any condition where visibility is restricted
    N d. visibility where you cannot see shore

4850: BOTH INTERNATIONAL & INLAND The Rules state that risk of collision shall be deemed to exist __________.

    N a. whenever two vessels are on opposite courses
    N b. whenever a vessel crosses ahead of the intended track of another vessel
    Y c. if the bearing of an approaching vessel does not appreciably change
    N d. if one vessel approaches another so as to be overtaking

4871: BOTH INTERNATIONAL & INLAND Your vessel is NOT making way, but is not in any way disabled. Another vessel is approaching you on your starboard beam. Which statement is TRUE?

    Y a. Your vessel is obligated to stay out of the way.
    N b. The other vessel must give way, since your vessel is stopped.
    N c. You should be showing the lights or shapes for a vessel not under command.
    N d. You should be showing the lights or shapes for a vessel restricted in her ability to maneuver.

8054: INTERNATIONAL ONLY Which statement applies to a vessel "constrained by her draft"?

    Y a. She is severely restricted in her ability to change her course because of her draft in relation to the available depth of water.
    N b. The term applies only to vessels in marked channels.
    N c. She is designated as a "vessel restricted in her ability to maneuver".
    N d. The vessel must be over 100 meters in length.

8069: INTERNATIONAL ONLY Which signal is sounded ONLY by a vessel in sight of another and NOT in or near an area of restricted visibility?

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

8070: INTERNATIONAL ONLY In addition to her running lights, an underway vessel constrained by her draft may carry in a vertical line __________.

    N a. a red light, a white light, and a red light
    N b. two red lights
    N c. two white lights
    Y d. three red lights