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.


44: INLAND ONLY What lights are required for a barge being pushed ahead, not being part of a composite unit?


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" __________.


96: INLAND ONLY You are approaching a sharp bend in a river. You have sounded a prolonged blast and it has been answered by a vessel on the other side of the bend. Which statement is TRUE?


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

160: BOTH INTERNATIONAL & INLAND The lights shown are exhibited by a vessel __________. (DIAGRAM 49 )

    Y a. vessel not under command
    N b. air-cushion vessel in the non-displacement mode
    N c. vessel engaged in fishing
    N d. vessel engaged in underwater operations

215: INTERNATIONAL ONLY At night you sight the lights shown. What do the lights indicate? (DIAGRAM 66 )

    N a. Two vessels pair trawling
    Y b. A tug with a tow alongside
    N c. A ship being assisted by a tug
    N d. A vessel engaged in fishing

243: INTERNATIONAL ONLY You are on vessel "A" as shown. Vessel "B" sounds two short blasts. You should __________. (DIAGRAM 32 )

    N a. sound two prolonged blasts followed by two short blasts
    Y b. not answer the whistle signal from vessel "B"
    N c. sound two short blasts and maintain course and speed
    N d. sound one prolonged, one short, one prolonged and one short blasts

311: INLAND ONLY Identify the operation indicated by the lights exhibited as shown. (DIAGRAM 85 )

    N a. Aircraft carrier engaged in the launching and recovery of aircraft
    N b. A submarine engaged in underway replenishment
    N c. A vessel aground assisted by tugs
    Y d. None of the above

362: BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown. Vessel "A" sounds two short blasts on the whistle. You are on vessel "B" and are in doubt that sufficient action is being taken by vessel "A" to avoid collision. You should __________. (DIAGRAM 42 )

    N a. maintain course and speed
    N b. alter course to the right or slow down
    N c. sound one short blast and maintain course and speed
    Y d. sound five or more short and rapid blasts

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

    N a. not under command
    Y b. under oars
    N c. engaged in fishing
    N d. towing

4034: BOTH INTERNATIONAL & INLAND A vessel "restricted in her ability to maneuver" is one which __________.

    Y a. from the nature of her work is unable to maneuver as required by the rules
    N b. through some exceptional circumstance is unable to maneuver as required by the rules
    N c. due to adverse weather conditions is unable to maneuver as required by the rules
    N d. has lost steering and is unable to maneuver

4088: BOTH INTERNATIONAL & INLAND The term "restricted visibility" as used in the Rules refers __________.

    N a. only to fog
    N b. only to visibility of less than one-half of a mile
    N c. to visibility where you cannot see shore
    Y d. to any condition where visibility is restricted

4197: BOTH INTERNATIONAL & INLAND A vessel which is unable to maneuver due to some exceptional circumstance, shall show two red lights in a vertical line and __________.

    N a. during the day, three balls in a vertical line
    N b. during the day, three shapes, the highest and lowest being balls and the middle being a diamond
    Y c. when making way at night, sidelights and a stern light
    N d. when making way at night, masthead lights, sidelights, and a stern light

4266: BOTH INTERNATIONAL & INLAND On open waters, a power-driven vessel shall keep out of the way of a __________.

    N a. vessel on her port side that is crossing her course
    N b. vessel that is overtaking her
    N c. seaplane on the water
    Y d. sailing vessel

4279: BOTH INTERNATIONAL & INLAND You are watching another vessel approach and her compass bearing is not changing. This means that __________.

    N a. you are the stand-on vessel
    Y b. a risk of collision exists
    N c. a special circumstances situation exists
    N d. the other vessel is dead in the water

4359: BOTH INTERNATIONAL & INLAND Your vessel is underway but stopped and making no way through the water when fog sets in. Which fog signal should you sound?

    N a. One prolonged blast on the whistle
    N b. One prolonged blast and two short blasts on the whistle
    Y c. Two prolonged blasts on the whistle
    N d. One short, one prolonged, and one short blast on the whistle

4362: BOTH INTERNATIONAL & INLAND A vessel underway and fishing shall keep out of the way of a __________.

    N a. power-driven vessel underway
    Y b. vessel not under command
    N c. vessel sailing
    N d. vessel engaged on pilotage duty

4383: BOTH INTERNATIONAL & INLAND You are in charge of a stand-on vessel in a crossing situation. The other vessel is 1.5 miles to port. You believe that risk of collision exists. You should __________.

    N a. take avoiding action immediately upon determining that risk of collision exists
    N b. immediately sound the danger signal
    Y c. take avoiding action only after providing the give-way vessel time to take action, and determining that her action is not appropriate
    N d. hold course and speed until the point of extremis, and then sound the danger signal, taking whatever action will best avert collision

4392: BOTH INTERNATIONAL & INLAND Which vessel does NOT sound a fog signal of one prolonged followed by two short blasts?

    N a. A vessel dredging
    Y b. A vessel being towed
    N c. A vessel engaged in fishing
    N d. A sailing vessel

4430: BOTH INTERNATIONAL & INLAND Which vessel does NOT sound a fog signal of one prolonged followed by two short blasts?

    N a. A vessel engaged in dredging
    N b. A sailing vessel
    Y c. A vessel being towed
    N d. A vessel engaged in fishing

4443: BOTH INTERNATIONAL & INLAND Which statement is TRUE in an overtaking situation?

    N a. An overtaking situation exists when one vessel is approaching another vessel from anywhere abaft the beam.
    N b. It is the duty of the vessel being overtaken to get out of the way.
    Y c. Any later change of bearing between the two vessels shall not make the overtaking vessel a crossing vessel.
    N d. All of the above

4457: BOTH INTERNATIONAL & INLAND If you anchor your 25-meter vessel in a harbor, what light(s) must you show?

    Y a. One all-round white light
    N b. Two all-round white lights
    N c. One all-round red light
    N d. All the deck house lights

4561: BOTH INTERNATIONAL & INLAND Your vessel is aground in fog. In addition to the regular anchor signals, you will be sounding __________.

    N a. three strokes of the gong before and after the rapid ringing of the gong
    N b. a blast on the whistle
    Y c. three strokes of the bell before and after the rapid ringing of the bell
    N d. no additional signals

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

4605: BOTH INTERNATIONAL & INLAND When two power-driven vessels are meeting head-on and there is a risk of collision, each shall __________.

    N a. stop her engines
    Y b. alter course to starboard
    N c. sound the danger signal
    N d. back down

4607: BOTH INTERNATIONAL & INLAND What is the minimum length of vessels required to show two anchor lights?

    N a. 40 meters
    Y b. 50 meters
    N c. 60 meters
    N d. 70 meters

4631: BOTH INTERNATIONAL & INLAND Two barges are being pushed ahead by a tugboat. Which statement is TRUE concerning lights on the barges?

    N a. Each vessel should show sidelights.
    N b. Each vessel should show at least one white light.
    N c. The barges should be lighted as separate units.
    Y d. The barges should be lighted as one vessel.

4671: BOTH INTERNATIONAL & INLAND Which statement is true concerning the light used to accompany whistle signals?

    Y a. It is only used to supplement short blasts of the whistle.
    N b. It is mandatory to use such a light.
    N c. The light shall have the same characteristics as a masthead light.
    N d. All of the above

4869: BOTH INTERNATIONAL & INLAND Power-driven vessels must keep out of the way of sailing vessels except __________.

    N a. in a crossing situation
    N b. when they are making more speed than the power-driven vessel
    Y c. when the sailing vessel is overtaking
    N d. on the Inland Waters of the United States

8101: INTERNATIONAL ONLY Which statement applies to a vessel "constrained by her draft"?

    N a. The term only applies to vessels in narrow channels.
    Y b. She is severely restricted in her ability to change her course because of her draft in relation to the available depth and width of navigable water.
    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.