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.


9: INLAND ONLY Which statement is TRUE concerning narrow channels?


38: INLAND ONLY Your vessel is meeting another vessel head-on. To comply with the rules, you should exchange __________.


77: INLAND ONLY Vessels "A" and "B" are meeting on a river as shown and will pass about 1/4 mile apart. What action should the vessels take? (DIAGRAM 41 )


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

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

178: BOTH INTERNATIONAL & INLAND Which display of lights shown indicates a 65-meter tug towing a barge astern, length of tow 120 meters? (DIAGRAM 72 )

    N a. A
    N b. B
    Y c. C
    N d. D

210: INLAND ONLY A single vessel being towed alongside shall exhibit __________.

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

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

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

375: BOTH INTERNATIONAL & INLAND The tow shown is made up of inconspicuous, partly submerged vessels and is 150 meters in length. The towed vessels are less than 25 meters in breadth and less than 100 meters in length. Which lights would be displayed from the towed vessels? (DIAGRAM 24 )

    N a. Sidelights and stern light on each vessel towed
    N b. One all round white light at the after end of each vessel towed
    Y c. One all round white light at or near each end of each vessel towed
    N d. One all round white light at each end and one all round white light at the extremities of its breadth of each vessel towed

4042: BOTH INTERNATIONAL & INLAND A towing vessel pushing a barge ahead and rigidly connected in a composite unit shall show the lights of __________.

    N a. a vessel pushing ahead
    Y b. a power-driven vessel, not towing
    N c. a barge being pushed ahead
    N d. either answer A or answer B

4083: BOTH INTERNATIONAL & INLAND All of the following are distress signals EXCEPT __________.

    N a. the continuous sounding of any fog signal apparatus
    Y b. giving five or more short and rapid blasts of the whistle
    N c. firing a gun at intervals of about a minute
    N d. a barrel with burning oil in it, on deck

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

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

4133: BOTH INTERNATIONAL & INLAND Which statement is TRUE when you are towing more than one barge astern at night?

    N a. Only the last barge in the tow must be lighted.
    N b. Only the first and last barges in the tow must be lighted.
    Y c. All barges in the tow must be lighted.
    N d. All barges, except unmanned barges, must be lighted.

4178: BOTH INTERNATIONAL & INLAND You are underway in fog and you hear one prolonged blast followed by two short blasts. This is a vessel __________.

    Y a. towing
    N b. engaged on pilotage duty
    N c. aground in a fairway
    N d. stopped and making no way through the water

4213: BOTH INTERNATIONAL & INLAND Which statement concerning whistle signals is FALSE?

    N a. When a pushing vessel and a vessel pushed are connected in a composite unit, the unit sounds the fog signal of a power-driven vessel.
    N b. A vessel at anchor may sound one short, one prolonged, and one short blast.
    N c. A pilot vessel may sound an identity signal on the whistle.
    Y d. A vessel engaged in towing in fog shall sound a fog signal at intervals of one minute.

4330: BOTH INTERNATIONAL & INLAND While underway in fog, you hear a short blast, a prolonged blast, and a short blast of a whistle. This signal indicates a __________.

    N a. vessel towing in fog
    N b. sailboat underway in fog
    N c. vessel being towed in fog
    Y d. vessel anchored in fog

4339: BOTH INTERNATIONAL & INLAND Two vessels are in an overtaking situation. Which of the lights on the overtaken vessel will the overtaking vessel see?

    N a. Two masthead lights
    N b. One masthead light and a sidelight
    N c. Both sidelights
    Y d. Stern light only

4397: BOTH INTERNATIONAL & INLAND In a crossing situation, a vessel fishing must keep out of the way of a vessel which is __________.

    N a. under sail
    N b. towing
    Y c. restricted in her ability to maneuver
    N d. engaged in pilotage duty

4403: BOTH INTERNATIONAL & INLAND What day-shape must be shown by a vessel over 20 meters fishing which has gear extending more than 150 meters horizontally outward from it?

    N a. One black ball
    N b. One diamond shape
    Y c. One cone with its apex upwards
    N d. One basket

4417: BOTH INTERNATIONAL & INLAND What describes a head-on situation?

    N a. Seeing a vessel displaying both sidelights ONLY dead ahead
    N b. Seeing two forward white towing identification lights in a vertical line on a towing vessel directly ahead
    N c. Seeing both sidelights of a vessel directly off your starboard beam
    Y d. Seeing both sidelights and masthead light(s) of a vessel dead ahead

4534: BOTH INTERNATIONAL & INLAND A vessel towing where the tow prevents her from changing course shall carry __________.

    N a. only the lights for a vessel towing
    N b. only the lights for a vessel restricted in her ability to maneuver
    Y c. the lights for a towing vessel and the lights for a vessel restricted in her ability to maneuver
    N d. the lights for a towing vessel and the lights for a vessel not under command

4546: BOTH INTERNATIONAL & INLAND Which vessel may use the danger signal?

    N a. The vessel to starboard when two power-driven vessels are crossing
    N b. A vessel engaged in fishing, crossing the course of a sailing vessel
    N c. Either of two power-driven vessels meeting head-on
    Y d. All of the above

4572: BOTH INTERNATIONAL & INLAND You are underway in low visibility and sounding fog signals. What changes would you make in the fog signal immediately upon losing propulsion?

    N a. Begin sounding two prolonged blasts at two-minute intervals.
    N b. Begin sounding one prolonged blast followed by three short blasts at two-minute intervals.
    Y c. Begin sounding one prolonged blast followed by two short blasts at two-minute intervals.
    N d. No change should be made in the fog signal.

4583: BOTH INTERNATIONAL & INLAND An anchor ball need NOT be exhibited by an anchored vessel if she is __________.

    N a. under 50 meters in length, and anchored in an anchorage
    N b. over 150 meters in length
    N c. rigged for sail
    Y d. less than 7 meters in length, and not in or near an area where other vessels normally navigate

4684: BOTH INTERNATIONAL & INLAND You see a red sidelight bearing NW (315°). That vessel may be heading __________.

    N a. northwest (315°)
    N b. east (090°)
    Y c. southwest (225°)
    N d. west (270°)

4687: BOTH INTERNATIONAL & INLAND A vessel engaged in fishing while at anchor shall sound a fog signal of __________.

    N a. one prolonged and three short blasts at one minute intervals
    N b. a rapid ringing of the bell for five seconds at one minute intervals
    Y c. one prolonged and two short blasts at two minute intervals
    N d. a sounding of the bell and gong at one minute intervals

4868: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning two sailing vessels approaching each other?

    N a. The vessel making the most speed is the give-way vessel.
    Y b. A sailing vessel overtaking another is the give-way vessel.
    N c. A sailing vessel seeing another to leeward on an undetermined tack shall hold her course.
    N d. All of the above

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.

8040: INTERNATIONAL ONLY Which vessel may NOT exhibit two red lights in a vertical line?

    Y a. A vessel constrained by her draft
    N b. A trawler fishing in close proximity to other trawlers
    N c. A vessel aground
    N d. A dredge

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.