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.


47: INLAND ONLY A flashing blue light is used to identify __________.


57: INLAND ONLY While underway during the day you sight a small motorboat showing a flashing blue light. The blue light indicates a __________.


129: INLAND ONLY You are proceeding in a channel in inland waters and are meeting an outbound vessel. Your responsibilities include __________.


138: INLAND ONLY A law enforcement vessel patrolling a marine regatta may show either a flashing blue light or __________.

    N a. two amber lights in a horizontal line
    Y b. an alternately flashing red and yellow light
    N c. a high intensity flashing white light (strobe)
    N d. a fixed green light over a red flashing light

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

    Y a. vessel not under command
    N b. air-cushion vessel in the non-displacement mode
    N c. vessel engaged in fishing
    N d. vessel engaged in underwater operations

258: INLAND ONLY Vessels "A" and "B" are meeting on a river as shown and will pass 1/4 mile apart. Which statement is TRUE? (DIAGRAM 41 )

    N a. Whistle signals must be exchanged in all situations when passing within one half mile.
    Y b. If a passing agreement is reached by radiotelephone, whistle signals are optional.
    N c. If a passing agreement is reached by radiotelephone whistle signals are still required.
    N d. None of the above

274: INLAND ONLY While underway you sight the lights shown with the yellow lights flashing, you should __________. (DIAGRAM 81 )

    N a. wait until the vessel ahead crosses your bow
    N b. stop until the red lights turn green
    Y c. pass between the two sets of vertical red lights
    N d. proceed leaving all the lights on your starboard side

336: INLAND ONLY Two power-driven vessels are crossing within a half a mile of each other as shown. Vessel "A" sounds one short blast on the whistle. Vessel "B" should __________. (DIAGRAM 42 )

    N a. maintain course and speed without sounding any signals
    N b. alter course to the right or slowdown
    Y c. sound one short blast and maintain course and speed
    N d. sound the danger signal and slow to moderate speed

401: INLAND ONLY Two power-driven vessels are meeting in the situation as shown in a narrow channel on the Great Lakes. Vessel "A" is downbound with a following current. Vessel "B" should __________. (DIAGRAM 37 )

    Y a. take action to permit safe passage
    N b. have the right of way
    N c. initiate the maneuvering signals
    N d. None of the above

401: INLAND ONLY Two power-driven vessels are meeting in the situation as shown in a narrow channel on the Great Lakes. Vessel "A" is downbound with a following current. Vessel "B" should __________. (DIAGRAM 37 )

    Y a. take action to permit safe passage
    N b. have the right of way
    N c. initiate the maneuvering signals
    N d. None of the above

4107: 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 to __________.

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

4123: BOTH INTERNATIONAL & INLAND While underway in fog, you hear a vessel sound one prolonged blast followed by two short blasts on the whistle. What does this signal indicate?

    Y a. A vessel towing
    N b. A vessel engaged in pilotage duty
    N c. A vessel being towed
    N d. A vessel aground

4194: BOTH INTERNATIONAL & INLAND At night, you are towing a partly submerged vessel, 20 meters in length and 4 meters in breadth. What lights must you display on the towed vessel?

    N a. A white light at the stern
    N b. Two white lights side by side at the stern
    Y c. A white light at the forward end and a white light at the after end
    N d. Two red lights in a vertical line at the after end

4223: BOTH INTERNATIONAL & INLAND Which vessel may show three lights in a vertical line, the top and bottom being red and the middle being white?

    Y a. A vessel engaged in diving operations
    N b. A pilot vessel
    N c. A vessel trawling
    N d. All of the above

4241: BOTH INTERNATIONAL & INLAND A tug is towing three manned barges in line in fog. The first vessel of the tow should sound __________.

    Y a. no fog signal
    N b. one short blast
    N c. one prolonged and three short blasts
    N d. one prolonged, one short, and one prolonged blast

4249: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning a vessel equipped with operational radar?

    Y a. She must use this equipment to obtain early warning of risk of collision.
    N b. The use of a radar excuses a vessel from the need of a look-out.
    N c. The radar equipment is only required to be used in restricted visibility.
    N d. The safe speed of such a vessel will likely be greater than that of vessels without radar.

4267: BOTH INTERNATIONAL & INLAND You are overtaking a vessel at night and you see a yellow light showing above the stern light of the overtaken vessel. The overtaken vessel is __________.

    N a. underway and dredging
    N b. pushing ahead or towing alongside
    Y c. towing astern
    N d. a pilot vessel

4320: BOTH INTERNATIONAL & INLAND Which vessel shall NOT impede the passage of a vessel which can safely navigate only within a narrow channel or fairway?

    N a. A vessel of less than 20 meters in length
    N b. A vessel sailing
    N c. A vessel fishing
    Y d. All of the above

4343: BOTH INTERNATIONAL & INLAND Risk of collision may exist __________.

    N a. if the compass bearing of an approaching vessel does NOT appreciably change
    N b. even when an appreciable bearing change is evident, particularly when approaching a vessel at close range
    N c. if you observe both sidelights of a vessel ahead for an extended period of time
    Y d. All of the above

4349: BOTH INTERNATIONAL & INLAND If a vessel is engaged in fishing according to the definitions in the Rules, it will have __________.

    N a. gear extending from the side or stern
    Y b. gear that restricts maneuverability
    N c. less than 50 percent trolling lines
    N d. None of the above

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

4567: BOTH INTERNATIONAL & INLAND As shown, vessel "A", which is pushing ahead, and vessel "B" are crossing. Which is the stand-on vessel? (DIAGRAM 5 )

    N a. Vessel "A" is the stand-on vessel because she is to port of vessel "B".
    N b. Vessel "A" is the stand-on vessel because she is pushing ahead.
    Y c. Vessel "B" is the stand-on vessel because she is to starboard of vessel "A".
    N d. Neither vessel is the stand-on vessel in this situation.

4585: BOTH INTERNATIONAL & INLAND While underway at night you are coming up on a vessel from astern. What lights would you expect to see?

    N a. Red and green sidelights
    N b. Two white lights
    N c. One white light and red and green sidelights
    Y d. One white light

4591: BOTH INTERNATIONAL & INLAND A vessel using a traffic separation scheme shall __________.

    N a. only anchor in the separation zone
    N b. cross a traffic lane at as small an angle as possible
    Y c. avoid anchoring in areas near the termination of the scheme
    N d. utilize the separation zone for navigating through the scheme if she is impeding other traffic due to her slower speed

4594: BOTH INTERNATIONAL & INLAND The Rules state that certain factors are to be taken into account when determining safe speed. Those factors include __________.

    Y a. state of wind, sea, and current, and the proximity of navigational hazards
    N b. maximum attainable speed of your vessel
    N c. temperature
    N d. aids to navigation that are available

4672: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning the danger signal?

    N a. Only the stand-on vessel can sound the danger signal.
    N b. Radio transmissions may be used in place of the danger signal.
    Y c. A vessel in doubt as to the other vessel's intentions must sound the danger signal.
    N d. The danger signal consists of 5 or more prolonged blasts of the whistle.

6520: BOTH INTERNATIONAL & INLAND A fog signal of one short, one prolonged, and one short blast may be sounded by a __________.

    N a. vessel not under command
    Y b. vessel at anchor
    N c. vessel towing
    N d. All of the above

8027: INTERNATIONAL ONLY Two prolonged blasts followed by one short blast on the whistle is a signal which could be sounded by a __________.

    N a. fishing vessel
    N b. vessel anchored
    N c. mineclearing vessel
    Y d. vessel overtaking another in a narrow channel

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