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.


98: INLAND ONLY You are aboard the stand-on vessel in a crossing situation. You sound a one blast whistle signal. The give-way vessel answers with a two blast whistle signal. You should sound the danger signal and __________.


133: INLAND ONLY A power-driven vessel operating in a narrow channel with a following current on the Great Lakes or Western Rivers is meeting an upbound vessel. Which statement is TRUE?


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


225: INLAND ONLY A barge more than 50 meters long, at anchor in a "special anchorage area designated by the Secretary", is required to show how many white anchor lights?

    N a. One
    N b. None
    N c. One, on the near approach of another vessel
    Y d. Two

229: BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown. Vessel "A" is the __________. (DIAGRAM 17 )

    N a. overtaken vessel
    Y b. give-way vessel
    N c. stand-on vessel
    N d. None of the above

235: INLAND ONLY Vessel "A" is power-driven and overtaking power-driven vessel "B" as shown and will pass without changing course. Vessel "A" should sound __________. (DIAGRAM 17 )

    N a. one short blast
    Y b. two short blasts
    N c. one prolonged blast
    N d. no signal

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

302: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown is a vessel __________. (DIAGRAM 79 )

    N a. engaged in fishing
    N b. dredging
    N c. engaged in launching or recovery of aircraft
    Y d. towing astern

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

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

338: 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 sound __________. (DIAGRAM 42 )

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

347: 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. Vessel "B" should __________. (DIAGRAM 42 )

    N a. sound the danger signal and slow to moderate speed
    N b. alter course to the right or slowdown
    N c. sound one short blast and maintain course and speed
    Y d. None of the above

386: INLAND ONLY Which statement is TRUE concerning the fog signal of a barge 35 meters in length, anchored in a "special anchorage area" approved by the Secretary?

    N a. The vessel shall ring a bell for 5 seconds every minute.
    Y b. The vessel is not required to sound a fog signal.
    N c. The vessel shall sound one blast of the whistle every 2 minutes.
    N d. The vessel shall sound three blasts on the whistle every 2 minutes.

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

    Y a. sailing vessel
    N b. vessel on pilotage duty
    N c. vessel engaged in fishing
    N d. power-driven vessel

4086: BOTH INTERNATIONAL & INLAND You are on vessel "A" and approaching vessel "B" as shown. You are not sure whether your vessel is crossing or overtaking vessel "B". You should __________. (DIAGRAM 15 )

    N a. change course to make the situation definitely either crossing or overtaking
    N b. consider it to be a crossing situation
    Y c. consider it to be an overtaking situation
    N d. consider it a crossing situation if you can cross ahead safely

4151: BOTH INTERNATIONAL & INLAND While underway in fog you hear a vessel sound one prolonged blast followed by two short blasts. What does this signal indicate?

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

4165: BOTH INTERNATIONAL & INLAND Which statement is TRUE of a 30-meter sailing vessel underway?

    Y a. She must show sidelights and a stern light in restricted visibility.
    N b. She may show an all-round white light at the top of the mast.
    N c. She need not show a stern light if she is showing all-round lights on the mast.
    N d. If she is using propelling machinery, she shall show forward a shape consisting of two cones, apexes together.

4187: BOTH INTERNATIONAL & INLAND In a crossing situation on open waters, a sailing vessel shall keep out of the way of all the following vessels EXCEPT a __________.

    N a. vessel not under command
    N b. vessel restricted in her ability to maneuver
    Y c. power-driven vessel approaching on her starboard side
    N d. vessel fishing

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

4231: BOTH INTERNATIONAL & INLAND A 15-meter sailing vessel would be required to show __________.

    N a. sidelights, stern light, and a red light over a green light on the mast
    Y b. sidelights, and stern light, but they may be in a combined lantern on the mast
    N c. separate sidelights and stern light
    N d. sidelights only

4281: BOTH INTERNATIONAL & INLAND A vessel 30 meters in length and aground would display a day-shape consisting of __________.

    N a. a cylinder
    N b. one black ball
    N c. two black balls in a vertical line
    Y d. three black balls in a vertical line

4301: BOTH INTERNATIONAL & INLAND In which situation would risk of collision definitely exist?

    N a. A vessel is 22 degrees on your port bow, range increasing, bearing changing slightly to the right.
    N b. A vessel is broad on your starboard beam, range decreasing, bearing changing rapidly to the right.
    N c. A vessel is 22 degrees abaft your port beam, range increasing, bearing is constant.
    Y d. A vessel is on your starboard quarter, range decreasing, bearing is constant.

4411: BOTH INTERNATIONAL & INLAND For the purpose of the Rules, except where otherwise required, the term __________.

    Y a. "vessel" includes seaplanes
    N b. "seaplane" includes nondisplacement craft
    N c. "vessel engaged in fishing" includes a vessel fishing with trolling lines
    N d. "vessel restricted in her ability to maneuver" includes fishing vessels

4459: BOTH INTERNATIONAL & INLAND Three short blasts of the whistle means __________.

    N a. "danger"
    N b. "I am in distress"
    N c. the vessel is not under command (broken down)
    Y d. "I am operating astern propulsion"

4502: INLAND ONLY Vessels engaged in fishing may show the additional signals described in Annex II to the Rules when they are __________.

    N a. trolling
    N b. fishing in a traffic separation zone
    N c. in a narrow channel
    Y d. in close proximity to other vessels engaged in fishing

4836: BOTH INTERNATIONAL & INLAND Which vessel is, by definition, unable to keep out of the way of another vessel?

    N a. Vessel engaged in fishing
    N b. Vessel not making way
    N c. Vessel sailing
    Y d. Vessel restricted in her ability to maneuver

4862: BOTH INTERNATIONAL & INLAND You are underway in thick fog. You have not determined if risk of collision exists. Which statement is TRUE?

    Y a. Your speed must be reduced to bare steerageway.
    N b. A look-out is not required if the radar is on.
    N c. Fog signals are only required when a vessel is detected by radar.
    N d. The radar should always be kept on a short-range scale.

5000: BOTH INTERNATIONAL & INLAND While underway in fog, you hear a vessel ahead sound two prolonged blasts on the whistle. You should __________.

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

8029: INTERNATIONAL ONLY What day-shape is prescribed for a vessel constrained by her draft?

    N a. A black cone, apex upward
    N b. A black cone, apex downward
    N c. Two vertical black balls
    Y d. A cylinder

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

8084: INTERNATIONAL ONLY While underway at night, a power-driven vessel of less than 7 meters in length, whose maximum speed which does not exceed 7 knots, may show __________.

    N a. sidelights combined in a single lantern, only
    N b. an all-round flashing yellow light, only
    Y c. one all-round white light, only
    N d. a lantern showing a white light exhibited in sufficient time to prevent collision, only