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.


30: INLAND ONLY Which signal must a power-driven vessel give, in addition to one prolonged blast, when backing out of a berth with another vessel in sight?


54: 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"?


88: INLAND ONLY Two power-driven vessels are meeting in the situation as shown. One short blast by vessel "A" means __________. (DIAGRAM 37 )


109: BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown. Vessel "B" is an air-cushion vessel operating in the nondisplacement mode. In addition to a steady white light which other light will vessel "A" observe on vessel "B"? (DIAGRAM 17 )

    N a. Steady green light
    N b. Flashing red light
    Y c. Flashing yellow light
    N d. Flashing white light

123: INLAND ONLY What is not contained in the Inland Navigation Rules?

    N a. An inconspicuous, partly submerged object
    N b. Lights on pipelines
    Y c. A vessel constrained by her draft
    N d. An air-cushion vessel

130: INLAND ONLY Your vessel must stay within a narrow channel to be navigated safely. Another vessel is crossing your course from starboard to port. You do NOT think she will pass safely. You are required to __________.

    N a. slow to bare steerageway
    N b. back down
    N c. sound one short blast to indicate that you are holding course and speed
    Y d. sound the danger signal

191: INLAND ONLY At night, you see the lights shown. They are shown on a __________. (DIAGRAM 75 )

    N a. bow of a barge being pushed ahead
    N b. stern of a barge being towed astern
    N c. masthead of a tug towing astern
    Y d. stern of a tug pushing ahead

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

226: INLAND ONLY While underway and in sight of another vessel a mile ahead you put your engines on astern propulsion. Which statement concerning whistle signals is TRUE?

    N a. You must sound three short blasts on the whistle.
    N b. You must sound one blast if backing to starboard.
    N c. You must sound whistle signals only if the vessels are meeting.
    Y d. You need not sound any whistle signals.

264: INTERNATIONAL ONLY Two power-driven vessels are meeting in the situation as shown. One short blast from either vessel means __________. (DIAGRAM 37 )

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

313: INLAND ONLY You see the lights shown while proceeding in a channel. Where should you pass? (DIAGRAM 85 )

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

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

4058: BOTH INTERNATIONAL & INLAND Which factor is listed in the Rules as one which must be taken into account when determining safe speed?

    N a. The construction of the vessel
    Y b. The maneuverability of the vessel
    N c. The experience of vessel personnel
    N d. All of the above must be taken into account.

4091: BOTH INTERNATIONAL & INLAND An authorized light to assist in the identification of submarines operating on the surface is a(n) __________.

    N a. blue rotating light
    Y b. intermittent flashing amber/yellow light
    N c. flashing white light
    N d. flashing sidelight

4218: BOTH INTERNATIONAL & INLAND A vessel displaying the day signal shown is __________. (DIAGRAM 7 )

    Y a. not under command
    N b. a dredge underway and dredging
    N c. fishing
    N d. a hydrographic survey vessel underway

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.

4306: BOTH INTERNATIONAL & INLAND Which vessel is directed not to impede the passage of a vessel which can only navigate inside a narrow channel?

    Y a. A vessel of less than 20 meters in length
    N b. A vessel not under command
    N c. A vessel engaged in surveying
    N d. All of the above

4327: BOTH INTERNATIONAL & INLAND Two vessels are approaching each other near head on. What action should be taken to avoid collision?

    N a. The first vessel to sight the other should give way.
    N b. The vessel making the slower speed should give way.
    Y c. Both vessels should alter course to starboard.
    N d. Both vessels should alter course to port.

4329: BOTH INTERNATIONAL & INLAND Your vessel is 25 meters long and anchored in restricted visibility. You are required to sound the proper fog signal at intervals of not more than __________.

    N a. 30 seconds
    Y b. one minute
    N c. two minutes
    N d. three minutes

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

4465: BOTH INTERNATIONAL & INLAND Traffic separation schemes __________.

    N a. provide routing and scheduling procedures to reduce shipping delays
    N b. provide traffic patterns in congested areas, so that vessels can operate without having a separate lookout
    Y c. provide inbound and outbound lanes to promote the safe flow of vessel traffic
    N d. prohibit vessels carrying hazardous cargoes from entering waters that are environmentally sensitive

4479: BOTH INTERNATIONAL & INLAND What signal indicates doubt that sufficient action is being taken by another vessel to avoid collision?

    Y a. Five short and rapid blasts of the whistle
    N b. Three long blasts of the whistle
    N c. Three short and rapid blasts of the whistle
    N d. One prolonged blast followed by three short blasts of the whistle

4525: BOTH INTERNATIONAL & INLAND Sailing vessels are stand-on over power-driven vessels except __________.

    N a. in a crossing situation
    N b. in a meeting situation
    Y c. when they are the overtaking vessel
    N d. on the inland waters of the U.S.

4536: BOTH INTERNATIONAL & INLAND If a sailing vessel with the wind on the port side sees a sailing vessel to windward and cannot tell whether the other vessel has the wind on the port or starboard side, she shall __________.

    N a. hold course and speed
    N b. sound the danger signal
    Y c. keep out of the way of the other vessel
    N d. turn to port and come into the wind

4536: BOTH INTERNATIONAL & INLAND If a sailing vessel with the wind on the port side sees a sailing vessel to windward and cannot tell whether the other vessel has the wind on the port or starboard side, she shall __________.

    N a. hold course and speed
    N b. sound the danger signal
    Y c. keep out of the way of the other vessel
    N d. turn to port and come into the wind

4588: BOTH INTERNATIONAL & INLAND While underway in fog, you hear a vessel ahead sound two prolonged blasts on the whistle. You should __________.

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

4659: BOTH INTERNATIONAL & INLAND A vessel servicing a pipeline during the day shall display __________.

    Y a. three black shapes in a vertical line; the highest and lowest are balls, and the middle one is a diamond
    N b. three shapes in a vertical line; the highest and lowest are red balls, and the middle one is a white diamond
    N c. three black balls in a vertical line
    N d. two black balls in a vertical line

4664: BOTH INTERNATIONAL & INLAND You are approaching a narrow channel. You see a vessel that can only be navigated safely within the channel. You MUST __________.

    N a. hold your course and speed
    N b. sound the danger signal
    Y c. not cross the channel if you might impede the other vessel
    N d. initiate an exchange of passing signals

6540: BOTH INTERNATIONAL & INLAND A vessel may enter a traffic separation zone __________.

    N a. in an emergency
    N b. to engage in fishing within the zone
    N c. to cross the traffic separation scheme
    Y d. All of the above

8104: INTERNATIONAL ONLY Your vessel is constrained by her draft and operating in a narrow channel. Another vessel is crossing your course from starboard to port. You are in doubt as to her intentions. According to Rule 9, you __________.

    N a. should sound one short blast to indicate that you are holding course and speed
    N b. must sound one prolonged blast
    Y c. may sound the danger signal
    N d. are required to back down