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.


46: INLAND ONLY At night, a barge moored in a slip used primarily for mooring purposes shall __________.


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" __________.


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" __________.


113: INLAND ONLY At night, a barge moored in a slip used primarily for mooring purposes shall __________.

    N a. show a flashing yellow light at each corner
    N b. show a white light at each corner
    N c. show a red light at the bow and stern
    Y d. not be required to be lighted

156: BOTH INTERNATIONAL & INLAND You are underway at night and you sight the lights shown. You know these lights indicate a(n) _________________________ (DIAGRAM 47 )

    N a. vessel towing astern
    Y b. sailing vessel
    N c. submarine operating on the surface
    N d. vessel pushing a barge ahead

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

    N a. None
    N b. 3
    Y c. 2
    N d. 1

268: INLAND ONLY Two power-driven vessels are meeting in the situation as shown and will pass within 1/2 mile of each other. Two short blasts from either vessel means __________. (DIAGRAM 37 )

    Y a. "I intend to leave you on my starboard side."
    N b. "I intend to leave you on my port side."
    N c. "I am altering my course to port."
    N d. "I am altering my course to starboard."

290: BOTH INTERNATIONAL & INLAND The tow shown is greater than 200 meters in length and severely restricted in her ability to deviate from her course. Which dayshape(s) would be displayed by day from the vessel(s)? (DIAGRAM 24 )

    N a. ball-diamond-ball on the towing vessel
    N b. diamond on the towing vessel
    N c. diamond on the barges
    Y d. All of the above

316: BOTH INTERNATIONAL & INLAND At night a vessel displaying the lights as shown is __________. (DIAGRAM 82 )

    N a. a pilot boat
    N b. sailing
    Y c. fishing
    N d. anchored

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

380: INLAND ONLY While underway you sight the lights shown with the yellow lights flashing. The lights displayed are from a __________. (DIAGRAM 81 )

    Y a. dredge pipeline
    N b. mine clearance vessel
    N c. vessel aground
    N d. vessel not under command

4020: BOTH INTERNATIONAL & INLAND A vessel must proceed at a safe speed __________.

    N a. in restricted visibility
    N b. in congested waters
    N c. during darkness
    Y d. at all times

4044: BOTH INTERNATIONAL & INLAND You see a vessel's green sidelight bearing due east from you. The vessel might be heading __________.

    N a. east (090°)
    N b. northeast (045°)
    N c. northwest (315°)
    Y d. southwest (225°)

4050: BOTH INTERNATIONAL & INLAND A 22-meter sailing vessel when also being propelled by machinery shall show during daylight hours a __________.

    N a. black diamond
    Y b. black cone
    N c. black ball
    N d. basket

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

4144: BOTH INTERNATIONAL & INLAND At night, a vessel which is less than 7 meters in length and anchored in an area where other vessels do not normally navigate is __________.

    Y a. not required to show any anchor lights
    N b. required to show a flare-up light
    N c. required to show one white light
    N d. required to show sidelights and a stern light

4179: BOTH INTERNATIONAL & INLAND A sailing vessel is NOT allowed to show the all-round red over green lights on the mast if __________.

    N a. she is showing sidelights
    N b. her sidelights are combined and shown on the fore and aft centerline of the vessel
    N c. she is showing a stern light
    Y d. her sidelights and stern light are combined in one lantern and shown on the mast

4184: BOTH INTERNATIONAL & INLAND You are approaching another vessel at night. You can see both red and green sidelights and, above the level of the sidelights, three white lights in a vertical line. The vessel may be __________.

    N a. not under command
    Y b. towing a tow more than 200 meters astern
    N c. trawling
    N d. underway and dredging

4228: BOTH INTERNATIONAL & INLAND When is a stand-on vessel FIRST allowed by the Rules to take action in order to avoid collision?

    N a. When the two vessels are less than half a mile from each other.
    Y b. When the give-way vessel is not taking appropriate action to avoid collision.
    N c. When collision is imminent.
    N d. The stand-on vessel is never allowed to take action.

4269: BOTH INTERNATIONAL & INLAND All of the following are distress signals under the Rules EXCEPT __________.

    Y a. International Code Signal "AA"
    N b. orange-colored smoke
    N c. red flares
    N d. the repeated raising and lowering of outstretched arms

4394: BOTH INTERNATIONAL & INLAND A partly submerged vessel or object being towed, which is not readily noticeable, shall show __________.

    N a. yellow lights at each end
    N b. two red lights in a vertical line
    N c. a black ball
    Y d. a diamond shape

4466: BOTH INTERNATIONAL & INLAND Which lights shall a 200-meter vessel exhibit when at anchor?

    N a. In the forepart of the vessel, a 225-degree white light
    N b. In the after part of the vessel, a 112.5-degree white light
    Y c. Working lights to illuminate the decks
    N d. In the forepart of the vessel, a 112.5-degree white light

4477: BOTH INTERNATIONAL & INLAND There is a provision to depart from the Rules, if necessary, to avoid __________.

    N a. a close-quarters situation
    N b. an overtaking situation
    Y c. immediate danger
    N d. Any of the above

4560: BOTH INTERNATIONAL & INLAND When towing more than one barge astern at night __________.

    N a. only the last barge on the tow must be lighted
    N b. only the first and the last barges in the tow must be lighted
    Y c. each barge in the tow must be lighted
    N d. only manned barges must be lighted

4564: BOTH INTERNATIONAL & INLAND Which vessel sounds the same fog signal when underway or at anchor?

    N a. A sailing vessel
    Y b. A vessel restricted in her ability to maneuver
    N c. A vessel constrained by her draft
    N d. A vessel not under command

4600: BOTH INTERNATIONAL & INLAND Which vessel would sound a fog signal consisting of the ringing of a bell for 5 seconds?

    N a. A vessel engaged in fishing, at anchor
    N b. A vessel restricted in its ability to maneuver, at anchor
    Y c. A sailing vessel, at anchor
    N d. A sailing vessel becalmed

4700: BOTH INTERNATIONAL & INLAND What does the word "length" refer to?

    N a. Length between the perpendiculars
    Y b. Length overall
    N c. Waterline length
    N d. Registered length

5150: BOTH INTERNATIONAL & INLAND There are two classes of vessels which do not have to comply with the rule regarding traffic separation schemes, to the extent necessary to carry out their work. One of those is a vessel __________.

    N a. engaged in fishing
    N b. towing another
    Y c. servicing a navigational aid
    N d. on pilotage duty

8013: INTERNATIONAL ONLY When two vessels are in sight of one another, all of the following signals may be given EXCEPT __________.

    N a. a light signal of at least five short and rapid flashes
    Y b. four short whistle blasts
    N c. one prolonged, one short, one prolonged and one short whistle blasts
    N d. two short whistle blasts

8064: INTERNATIONAL ONLY You are underway in fog and hear a fog signal consisting of one prolonged and two short blasts. It could be any of the following EXCEPT a vessel __________.

    N a. engaged in mineclearance
    N b. engaged in fishing
    N c. constrained by her draft
    Y d. being towed