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.


3: 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 __________.


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


75: INLAND ONLY You are on vessel "A", and vessel "B" desires to overtake you on your starboard side as shown. After the vessels have exchanged one blast signals, you should __________. (DIAGRAM 31 )


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

    N a. other vessels can be seen approaching
    Y b. she is a power-driven vessel
    N c. visibility is restricted
    N d. her engines are going astern

99: INLAND ONLY A power-driven vessel when pushing ahead or towing alongside on the Western Rivers (above the Huey P. Long Bridge on the Mississippi River) shall exhibit __________.

    N a. two masthead lights, sidelights, and stern light
    N b. two masthead lights, sidelights, and two towing lights
    Y c. sidelights and two towing lights
    N d. one masthead light, sidelights, and stern light

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

    N a. under sail and power
    N b. dredging while underway
    N c. fishing with nets extending more than 150 meters
    Y d. power-driven and approaching head-on

198: INTERNATIONAL ONLY You are on a vessel that cannot comply with the spacing requirement for masthead lights. What is required in this situation?

    N a. The vessel must carry only the lights that comply with the rules; the others may be omitted.
    Y b. The vessel's lights must comply as closely as possible, as determined by her government.
    N c. The vessel must be altered to permit full compliance with the rules.
    N d. An all-round light should be substituted for the after masthead light and the stern light.

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

    N a. yellow flashing light
    N b. red sidelight
    N c. green sidelight
    Y d. None of the above

355: 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 intend to leave you on my port side"
    N c. "I am altering my course to port"
    N d. None of the above

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

    N a. law enforcement vessel
    N b. vessel on pilotage duty
    Y c. sailing vessel
    N d. power-driven vessel

4004: BOTH INTERNATIONAL & INLAND At night, a barge being towed astern must display __________.

    N a. red and green sidelights only
    N b. a white stern light only
    Y c. sidelights and a stern light
    N d. one all-round white light

4189: BOTH INTERNATIONAL & INLAND You see a vessel displaying the day signal shown. The vessel may be __________. (DIAGRAM 6 )

    N a. not under command
    N b. fishing with trawls
    Y c. laying cable
    N d. aground

4227: BOTH INTERNATIONAL & INLAND An orange flag showing a black circle and square is a __________.

    N a. signal indicating a course change
    Y b. distress signal
    N c. signal of asking to communicate with another vessel
    N d. signal indicating danger

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

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

4288: BOTH INTERNATIONAL & INLAND A vessel is carrying three lights in a vertical line. The highest and lowest of these are red and the middle light is white. Which statement is always TRUE?

    N a. During the day, she would display three balls in a vertical line.
    Y b. If making way, she would show masthead lights at night.
    N c. If at anchor, she need not show anchor lights while displaying identifying lights.
    N d. Her fog signal would consist of a rapid ringing of a bell for five seconds every minute.

4314: BOTH INTERNATIONAL & INLAND In order for a vessel to be "engaged in fishing" she must be __________.

    N a. underway
    N b. using gear which extends more than 50 meters outboard
    N c. using a seine of some type
    Y d. using gear which restricts her maneuverability

4329: BOTH INTERNATIONAL & INLAND Your vessel is 25 meters long and anchored in restricted visibility. You are required to sound the proper fog signal at intervals of not more than __________.

    N a. 30 seconds
    Y b. one minute
    N c. two minutes
    N d. three minutes

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

4406: BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown. Vessel "A" sounds three short blasts on the whistle. This signal means that vessel "A" __________. (DIAGRAM 42 )

    N a. intends to hold course and speed
    N b. is sounding the danger signal
    Y c. is backing engines
    N d. proposes to cross ahead of the other vessel

4462: BOTH INTERNATIONAL & INLAND A fog signal of one prolonged blast followed by four short blasts would mean the presence of a __________.

    N a. vessel being towed
    N b. fishing vessel trawling
    N c. vessel at anchor warning of her location
    Y d. power-driven pilot vessel on station underway

4525: BOTH INTERNATIONAL & INLAND Sailing vessels are stand-on over power-driven vessels except __________.

    N a. in a crossing situation
    N b. in a meeting situation
    Y c. when they are the overtaking vessel
    N d. on the inland waters of the U.S.

4629: BOTH INTERNATIONAL & INLAND For a stand-on vessel to take action to avoid collision she shall, if possible, NOT __________.

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

4645: BOTH INTERNATIONAL & INLAND What is required of a vessel navigating near an area of restricted visibility?

    N a. A power-driven vessel shall have her engines ready for immediate maneuver.
    N b. She must sound appropriate sound signals.
    N c. If she detects another vessel by radar, she shall determine if risk of collision exists.
    Y d. All of the above

4656: BOTH INTERNATIONAL & INLAND A vessel fishing at night, with gear extending more than 150 meters horizontally outwards, will show in the direction of the gear __________.

    Y a. one white light
    N b. two vertical white lights
    N c. one yellow light
    N d. two vertical yellow lights

4694: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning fog signals?

    N a. All fog signals for sailing vessels are to be given at intervals of not more than one minute.
    Y b. A vessel aground may sound a whistle signal.
    N c. A vessel not under command sounds the same fog signal as a vessel towed.
    N d. The identity signal of a pilot vessel is the only fog signal sounded by such a vessel.

4770: BOTH INTERNATIONAL & INLAND While underway in fog, you hear a vessel ahead sound two prolonged blasts on the whistle. You should __________.

    N a. sound two blasts and change course to the left
    N b. sound whistle signals only if you change course
    N c. not sound any whistle signals until the other vessel is sighted
    Y d. sound only fog signals until the other vessel is sighted

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

8063: INTERNATIONAL ONLY On open water two vessels are in an overtaking situation. The overtaking vessel has just sounded one short blast on the whistle. What is the meaning of this whistle signal?

    N a. "I request permission to pass you on my port side."
    N b. "I will maintain course and speed and pass you on your starboard side."
    N c. "On which side should I pass?"
    Y d. "I am changing course to starboard."

8126: INTERNATIONAL ONLY A light used to signal passing intentions must be an __________.

    N a. all-round white or yellow light
    N b. all-round yellow light only
    Y c. all-round white light only
    N d. Any colored light is acceptable.