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.


5: INLAND ONLY You are overtaking a power-driven vessel in a narrow channel and wish to leave her on your starboard side. You may __________.


31: INLAND ONLY At night, a light signal consisting of two flashes by a vessel indicates __________.


32: INLAND ONLY You are overtaking a power-driven vessel in a narrow channel and wish to leave her on your starboard side. You may __________.


35: INLAND ONLY You are on vessel "B" and vessel "A" desires to overtake you on your starboard side as shown. After the vessels have exchanged one blast signals, you should __________. (DIAGRAM 9 )

    N a. alter course to the left
    N b. slow your vessel until vessel "A" has passed
    Y c. hold course and speed
    N d. alter course to the left or right to give vessel "A" more sea room

89: 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 __________.

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

115: INLAND ONLY What is true of a "special flashing light"?

    Y a. It may show through an arc of 180.
    N b. It flashes at the rate of 120 flashes per minute.
    N c. It is optional below the Baton Rouge Highway Bridge.
    N d. All of the above

280: INLAND ONLY While underway you sight the lights shown with the yellow lights flashing. The lights displayed should be __________. (DIAGRAM 81 )

    N a. visible for at least one mile
    N b. flashing at intervals of 120 flashes per minute
    N c. more than 50 meters apart
    Y d. visible at night and during periods of restricted visibility

4001: BOTH INTERNATIONAL & INLAND The maximum length of a power-driven vessel which may show an all-round white light and sidelights instead of a masthead light, sidelights and a stern light is __________.

    N a. 6.9 meters
    N b. 9.9 meters
    Y c. 11.9 meters
    N d. 19.9 meters

4010: BOTH INTERNATIONAL & INLAND If your vessel is underway in fog and you hear one prolonged and three short blasts, this is a __________.

    N a. vessel not under command
    N b. sailing vessel
    Y c. vessel being towed (manned)
    N d. vessel being towed (unmanned)

4046: BOTH INTERNATIONAL & INLAND You are underway on vessel "A" and sight vessel "B" which is a vessel underway and fishing as shown. Which statement is true? (DIAGRAM 14 )

    N a. Vessel "A" must keep out of the way of vessel "B" because "B" is to port.
    Y b. Vessel "A" must keep out of the way of vessel "B" because "B" is fishing.
    N c. Vessel "B" must keep out of the way of vessel "A" because "A" is to starboard.
    N d. In this case, both vessels are required by the Rules to keep clear of each other.

4100: BOTH INTERNATIONAL & INLAND A 45-meter vessel is pulling a 210-meter tow. She may exhibit __________.

    N a. a masthead light forward, and two masthead lights in a vertical line aft
    Y b. three masthead lights forward and one aft
    N c. two masthead lights forward and no after masthead light
    N d. three masthead lights aft and none forward

4130: BOTH INTERNATIONAL & INLAND The duration of each blast of the whistle signals used in meeting and crossing situations is __________.

    Y a. about 1 second
    N b. 2 or 4 seconds
    N c. 4 to 6 seconds
    N d. 8 to 10 seconds

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

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

4241: BOTH INTERNATIONAL & INLAND A tug is towing three manned barges in line in fog. The first vessel of the tow should sound __________.

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

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

4302: BOTH INTERNATIONAL & INLAND A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound __________.

    N a. one long blast
    Y b. one prolonged blast
    N c. the danger signal
    N d. two short blasts

4357: BOTH INTERNATIONAL & INLAND A vessel 15 meters in length which is proceeding under sail as well as being propelled by machinery shall exhibit during the daytime __________.

    N a. one black ball
    N b. a basket
    Y c. a cone with its apex downward
    N d. two cones with their apexes together

4496: BOTH INTERNATIONAL & INLAND A vessel which is fishing is required to show sidelights and a stern light only when __________.

    N a. anchored
    N b. underway
    N c. dead in the water
    Y d. underway and making way

4505: BOTH INTERNATIONAL & INLAND Vessels of less than what length may not impede the passage of other vessels which can safely navigate only within a narrow channel or fairway?

    N a. 10 meters
    Y b. 20 meters
    N c. 30 meters
    N d. 40 meters

4508: BOTH INTERNATIONAL & INLAND Which vessel may carry her sidelights and stern light in a combined lantern on the mast?

    Y a. An 18-meter sailing vessel
    N b. A 10-meter sailing vessel also being propelled by machinery
    N c. A 25-meter sailing vessel
    N d. All of the above

4557: BOTH INTERNATIONAL & INLAND Rule 14 describes the action to be taken by vessels meeting head-on. Which of the following conditions must exist in order for this rule to apply?

    N a. Both vessels must be power-driven.
    N b. They must be meeting on reciprocal or nearly reciprocal courses.
    N c. The situation must involve risk of collision.
    Y d. All of the above

4596: BOTH INTERNATIONAL & INLAND A vessel displaying the day-shape is __________. (DIAGRAM 13 )

    N a. fishing
    N b. towing
    N c. being towed
    Y d. anchored

4603: BOTH INTERNATIONAL & INLAND In addition to sidelights what light should a vessel being towed astern show?

    Y a. A stern light
    N b. A masthead light
    N c. Not under command lights
    N d. Range lights

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.

4856: BOTH INTERNATIONAL & INLAND When in sight of another vessel and there is sufficient sea room, any action taken to avoid collision must __________.

    N a. be accompanied by sound signals
    Y b. not result in another close quarters situation
    N c. include a speed change
    N d. All of the above

4858: BOTH INTERNATIONAL & INLAND When underway in a channel, you should if safe and practicable __________.

    N a. stay near the middle of the channel
    N b. keep to the starboard side of any vessels you meet
    N c. exchange whistle signals with any other vessels in the channel
    Y d. keep to the side of the channel which lies to your starboard

4859: 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 in the narrow channel. Which statement is TRUE?

    N a. Each vessel should move to the edge of the channel on her port side.
    N b. The vessels are required to exchange signals.
    Y c. The fishing vessel is directed not to impede the passage of the sailing vessel.
    N d. Each vessel should be displaying signals for a vessel constrained by her draft.

8060: INTERNATIONAL ONLY You are operating a vessel in a narrow channel. 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 his intentions. According to Rule 9, you __________.

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

8077: INTERNATIONAL ONLY Vessel "A" is overtaking vessel "B" on open waters and will pass without changing course. Vessel "A" should __________.

    N a. sound two prolonged blasts followed by two short blasts
    N b. sound the danger signal
    Y c. not sound any whistle signals
    N d. sound one long blast