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.


36: INLAND ONLY Which type of vessel is NOT mentioned in the Inland Navigation Rules?


37: INLAND ONLY You are operating a vessel through a narrow channel and your vessel must stay within the channel to be navigated safely. Another vessel is crossing your course from starboard to port, and you are in doubt as to her intentions. You __________.


39: INLAND ONLY Which indicates the presence of a partly submerged object being towed?


43: INLAND ONLY You are meeting another vessel head-on and sound one short blast as a passing signal. The other vessel answers with two short blasts. What should be your next action?

    N a. Pass on the other vessel's starboard side.
    Y b. Sound the danger signal.
    N c. Pass astern of the other vessel.
    N d. Hold your course and speed.

118: BOTH INTERNATIONAL & INLAND You are on a vessel engaged in fishing, other than trawling, and have gear extending more than 150 meters horizontally from the vessel. Which day-shape must you show in the direction of the outlying gear? (DIAGRAM 16 )

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

142: INLAND ONLY The special light for a vessel engaged in public safety activities must __________.

    N a. be on top of the mast or highest structure of the vessel
    Y b. not interfere with the visibility of the navigation lights
    N c. be as far forward as possible
    N d. not be visible more than 22 1/2 degrees abaft the beam

149: INLAND ONLY A power-driven vessel pushing ahead or towing alongside on the Mississippi River, above the Huey P. Long Bridge, shall carry __________.

    N a. two masthead lights, sidelights, and stern light
    N b. two masthead lights, sidelights, and two towing lights
    Y c. sidelights and two towing lights
    N d. one masthead light, sidelights, and stern light

239: INLAND ONLY Vessels "A" and "B" are meeting on a river as shown and will pass 1/4 mile apart. Which statement is TRUE? (DIAGRAM 29 )

    N a. Both vessels should continue on course and pass without sounding any whistle signals.
    N b. The vessels must exchange two blast whistle signals and pass port to port.
    N c. The vessels must exchange one blast whistle signals and pass starboard to starboard
    Y d. The vessels may reach agreement by radiotelephone and sound no whistle signal.

247: INLAND ONLY You are on vessel "I" and in sight of vessel "II" as shown. Vessel "II" sounds one short blast. If you agree, you should __________. (DIAGRAM 36 )

    Y a. sound one short blast and hold course and speed
    N b. hold course and speed and sound no signal
    N c. sound one short blast and slow down or turn to starboard
    N d. sound the danger signal and slow to moderate speed

256: INTERNATIONAL ONLY Vessels "A" and "B" are meeting on a river as shown and will pass 1/4 mile apart. If you are on vessel "A", in addition to the sidelight, which other light(s) will you see on vessel "B"? (DIAGRAM 41 )

    N a. special flashing yellow light
    Y b. two white masthead lights in a vertical line
    N c. two yellow towing lights
    N d. None of the above

256: INTERNATIONAL ONLY Vessels "A" and "B" are meeting on a river as shown and will pass 1/4 mile apart. If you are on vessel "A", in addition to the sidelight, which other light(s) will you see on vessel "B"? (DIAGRAM 41 )

    N a. special flashing yellow light
    Y b. two white masthead lights in a vertical line
    N c. two yellow towing lights
    N d. None of the above

337: 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 sound __________. (DIAGRAM 42 )

    Y a. one short blast
    N b. two short blasts
    N c. two prolonged blasts followed by two short blasts
    N d. three short blasts

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

4040: BOTH INTERNATIONAL & INLAND Which of the day-shapes shown indicates a vessel with a tow exceeding 200 meters in length? (DIAGRAM 16 )

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

4142: BOTH INTERNATIONAL & INLAND A vessel engaged in fishing must display a light in the direction of any gear that extends outward more than 150 meters. The color of this light is __________.

    Y a. white
    N b. green
    N c. red
    N d. yellow

4271: BOTH INTERNATIONAL & INLAND A tug is towing three manned barges in line in fog. The third vessel of the tow should sound __________.

    N a. no fog signal
    N b. one prolonged and two short blasts
    Y c. one prolonged and three short blasts
    N d. one prolonged, one short and one prolonged blast

4303: BOTH INTERNATIONAL & INLAND In fog, you hear apparently forward of your beam a fog signal of 2 prolonged blasts in succession every two minutes. This signal indicates a __________.

    N a. power-driven vessel making way through the water
    N b. vessel being pushed ahead
    N c. vessel restricted in her ability to maneuver
    Y d. power-driven vessel underway but stopped and making no way through the water

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

4355: BOTH INTERNATIONAL & INLAND You are crossing a narrow channel in an 18-meter tug when you sight a loaded tankship off your port bow coming up the channel. Which statement is correct?

    N a. Neither vessel is the stand-on vessel because the tankship is crossing.
    Y b. You cannot impede the safe passage of the tankship.
    N c. The tankship is the stand-on vessel because it is in the channel.
    N d. The tankship is the stand-on vessel because it is the larger of the two vessels.

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

4384: BOTH INTERNATIONAL & INLAND In DIAGRAM 8, vessel "A" and vessel "B" (which is pushing ahead) are meeting head-on as shown. How must the vessels pass? (DIAGRAM 8 )

    N a. Vessel "A" must alter course while vessel "B" continues on its present course.
    N b. The vessels should determine which will alter course by exchanging whistle signals.
    N c. Both vessels should alter course to port and pass starboard to starboard.
    Y d. Both vessels should alter course to starboard and pass port to port.

4442: BOTH INTERNATIONAL & INLAND Which vessel shall not 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

4498: BOTH INTERNATIONAL & INLAND In the daytime, you see a large sailing vessel on the beam. You know that she is also propelled by machinery if she shows __________.

    N a. a basket
    N b. a black ball
    Y c. a black cone
    N d. two black cones

4527: BOTH INTERNATIONAL & INLAND You are fishing at night, and you sight a vessel showing three lights in a vertical line. The upper and lower lights are red and the middle light is white. Which statement is TRUE?

    Y a. You must keep out of the way of the other vessel.
    N b. The other vessel is responsible to keep out of your way.
    N c. The other vessel is at anchor.
    N d. The rule of special circumstances applies.

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

4626: BOTH INTERNATIONAL & INLAND A vessel being towed astern, where the length of the tow exceeds 200 meters, will exhibit __________.

    N a. two balls in a vertical line
    Y b. a diamond shape where it can best be seen
    N c. a ball on each end of the tow
    N d. no day-shape

4643: BOTH INTERNATIONAL & INLAND A sailing vessel underway at night may show __________.

    Y a. a red light over a green light at the masthead
    N b. a green light over a red light at the masthead
    N c. two white lights in a vertical line at the stern
    N d. an all-round white light at the bow

4843: BOTH INTERNATIONAL & INLAND According to the Rules, a vessels length is her __________.

    N a. length between the perpendiculars
    N b. length along the waterline
    Y c. length overall
    N d. registered length

4863: BOTH INTERNATIONAL & INLAND A sailing vessel is proceeding along a narrow channel and can safely navigate ONLY inside the channel. The sailing vessel approaches a vessel engaged in fishing. Which statement is TRUE?

    N a. The fishing vessel must sound the danger signal.
    Y b. The fishing vessel shall not impede the passage of the sailing vessel.
    N c. Each vessel should move to the edge of the channel on her port side.
    N d. Both vessels should be displaying the signal for a vessel restricted in her ability to maneuver.

8099: INTERNATIONAL ONLY A vessel displaying three red lights in a vertical line is __________.

    N a. restricted in her ability to maneuver
    N b. not under command
    N c. engaged in mineclearing operations
    Y d. constrained by her draft