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.


7: INLAND ONLY When power-driven vessels are crossing, a signal of one short blast by either vessel means __________.


63: INLAND ONLY A vessel of less than 20 meters in length at anchor at night in a "special anchorage area designated by the Secretary" __________.


110: INLAND ONLY Which statement is TRUE concerning the fog signal of a sailing vessel 25 meters in length, anchored in a "special anchorage area" approved by the Secretary?


209: INLAND ONLY A single vessel being towed alongside shall show __________.

    N a. one all-round white light
    N b. sidelights and a stern light
    N c. only the outboard sidelight and a stern light
    Y d. a special flashing light, sidelights, and a stern light

265: INTERNATIONAL ONLY You are on a power-driven vessel "I" as shown. Vessel "II" is a vessel engaged in fishing. The vessels will pass within 1/2 mile of each other. Which action should you take? (DIAGRAM 36 )

    N a. Hold course and speed without giving a signal.
    N b. Sound the danger signal and slow to moderate speed.
    Y c. Sound one short blast, turn to starboard.
    N d. Sound one short blast and hold course and speed.

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

349: 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 sound __________. (DIAGRAM 42 )

    N a. one prolonged, one short, one prolonged and one short blasts
    N b. one short blast
    N c. two short blasts
    Y d. None of the above

364: BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown. Vessel "A" sounds one short blast on the whistle. Vessel "B" is the __________. (DIAGRAM 42 )

    N a. burdened vessel
    N b. give-way vessel
    Y c. stand-on vessel
    N d. overtaking vessel

376: BOTH INTERNATIONAL & INLAND Which vessel must show forward and after masthead lights when making way?

    Y a. A 75-meter vessel restricted in her ability to maneuver
    N b. A 100-meter sailing vessel
    N c. A 150-meter vessel engaged in fishing
    N d. A 45-meter vessel engaged in towing

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

4206: BOTH INTERNATIONAL & INLAND At night, a vessel shall indicate that she is restricted in her ability to maneuver by showing in a vertical line two __________.

    N a. red lights
    N b. red lights and two white lights
    Y c. red lights with a white light in between
    N d. white lights with a red light in between

4212: BOTH INTERNATIONAL & INLAND While underway your vessel approaches a bend in a river where, due to the bank, you cannot see around the bend. You should __________.

    N a. keep to the starboard side of the channel and sound one short blast
    N b. sound the danger signal
    Y c. sound one prolonged blast
    N d. slow your vessel to bare steerageway

4222: BOTH INTERNATIONAL & INLAND You are towing two barges astern. The length of the tow from the stern of the tug to the stern of the last barge is 150 meters. How many white towing identification lights should be displayed on the tugboat at night?

    N a. 1
    Y b. 2
    N c. 3
    N d. 4

4229: BOTH INTERNATIONAL & INLAND You are crossing a narrow channel in a 15-meter vessel when you sight a tankship off your port bow coming up the channel. Which statement is TRUE?

    N a. Yours is the give-way vessel because it is less than 30 meters long.
    Y b. You shall not impede the safe passage of the tankship.
    N c. The tankship is the stand-on vessel because it is to port of your vessel.
    N d. The tankship is the stand-on vessel because it is the larger of the two vessels.

4254: BOTH INTERNATIONAL & INLAND You are underway in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must __________.

    N a. stop your engines
    N b. sound two prolonged blasts of the whistle
    N c. sound the danger signal
    Y d. slow to bare steerageway

4386: BOTH INTERNATIONAL & INLAND While underway in fog you hear a rapid ringing of a bell ahead. This bell indicates a __________.

    Y a. vessel at anchor
    N b. vessel in distress
    N c. sailboat underway
    N d. vessel backing out of a berth

4481: BOTH INTERNATIONAL & INLAND While underway in fog, you hear the rapid ringing of a bell for about five seconds followed by the sounding of a gong for about five seconds. This signal came from a __________.

    N a. vessel engaged in fishing at anchor
    N b. sailing vessel at anchor
    Y c. vessel 150 meters in length at anchor
    N d. vessel aground

4485: BOTH INTERNATIONAL & INLAND You are underway in reduced visibility. You hear the fog signal of another vessel about 20° on your starboard bow. Risk of collision may exist. You should __________.

    N a. alter course to starboard to pass around the other vessel
    Y b. reduce your speed to bare steerageway
    N c. slow your engines and let the other vessel pass ahead of you
    N d. alter course to port to pass the other vessel on its portside

4491: BOTH INTERNATIONAL & INLAND Barges being towed at night __________.

    Y a. must be lighted at all times
    N b. must be lighted only if manned
    N c. must be lighted only if towed astern
    N d. need not be lighted

4526: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning risk of collision?

    N a. Risk of collision never exists if the compass bearing of the other vessel is changing.
    Y b. Proper use shall be made of radar equipment to determine risk of collision.
    N c. Risk of collision must be determined before any action can be taken by a vessel.
    N d. Risk of collision exists if the vessels will pass within half a mile of each other.

4539: BOTH INTERNATIONAL & INLAND All of the following are distress signals under the Rules EXCEPT __________.

    Y a. a green star signal
    N b. orange-colored smoke
    N c. red flares
    N d. the repeated raising and lowering of outstretched arms

4554: BOTH INTERNATIONAL & INLAND Which vessel must have a gong, or other equipment which will make the sound of a gong?

    N a. A sailing vessel
    N b. Any vessel over 50 meters
    Y c. Any vessel over 100 meters
    N d. A power-driven vessel over 75 meters

4563: BOTH INTERNATIONAL & INLAND You are on vessel "A" in DIAGRAM 32, and hear vessel "B" sound a signal indicating her intention to overtake you. You feel it is not safe for vessel "B" to overtake you at the present time. You should __________.

    Y a. sound five or more short rapid blasts
    N b. sound two short blasts
    N c. not answer the whistle signal from vessel "B"
    N d. sound three blasts of the whistle

4614: BOTH INTERNATIONAL & INLAND Which vessel may show identifying lights when not actually engaged in her occupation?

    N a. A fishing vessel
    N b. A pilot vessel
    N c. A mineclearance vessel
    Y d. None of the above

4716: BOTH INTERNATIONAL & INLAND Which day-shape should a vessel being towed exhibit if the tow EXCEEDS 200 meters?

    N a. A cone, apex downward
    N b. A cone, apex upward
    Y c. A diamond
    N d. A ball

4827: BOTH INTERNATIONAL & INLAND The Rules state that vessels may depart from the requirements of the Rules when __________.

    N a. operating in restricted visibility
    N b. operating in a narrow channel
    Y c. necessary to avoid immediate danger
    N d. the Master enters it in the ship's log

4876: BOTH INTERNATIONAL & INLAND You are approaching a narrow channel. Another vessel in the channel can only be navigated safely in that channel. You should __________.

    N a. sound two prolonged blasts followed by one short blast
    Y b. not cross the channel if you might impede the other vessel
    N c. sound three short blasts, and take all way off your vessel
    N d. hold your course and speed if he is on your port bow

5400: BOTH INTERNATIONAL & INLAND A vessel using a traffic separation scheme shall NOT __________.

    N a. cross a traffic lane
    N b. engage in fishing the separation zone
    Y c. proceed in an inappropriate traffic lane
    N d. enter the separation zone

8004: INTERNATIONAL ONLY When moving from a berth alongside a quay (wharf), a vessel must sound __________.

    N a. three short blasts
    N b. a long blast
    N c. a prolonged blast
    Y d. No signal is required.

8078: INTERNATIONAL ONLY Vessel "A" is overtaking vessel "B" on open waters as shown and will pass without changing course. Vessel "A" __________. (DIAGRAM 17 )

    Y a. need not sound any whistle signals
    N b. should sound two short blasts
    N c. should sound the danger signal
    N d. should sound one long blast