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 __________.


71: INLAND ONLY Which is TRUE of a power-driven vessel, bound downstream, when meeting an upbound vessel on the Western Rivers?


106: INLAND ONLY You are overtaking another power-driven vessel and sound a whistle signal indicating that you intend to pass the vessel along her starboard side. If the other vessel answers your signal with five short and rapid blasts, you should __________.


117: INLAND ONLY Which is a characteristic of a "special flashing light"?

    N a. It is required for all vessels being pushed ahead as part of a composite unit.
    Y b. It must show through an arc of not less than 180° nor more than 225°.
    N c. It must be of the same character and construction as the masthead light.
    N d. All of the above

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

    Y a. sailing vessel
    N b. air cushion vessel operating in the non-displacement mode
    N c. submarine operating on the surface
    N d. vessel pushing a barge ahead

236: INTERNATIONAL ONLY Vessel "A" is overtaking vessel "B" on open waters as shown and will pass without changing course. Vessel "A" should sound __________. (DIAGRAM 17 )

    N a. one short blast
    N b. two short blasts
    N c. one prolonged blast
    Y d. no whistle signal

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

259: BOTH INTERNATIONAL & INLAND Barges being towed at night must exhibit navigation lights __________.

    Y a. at all times
    N b. only if manned
    N c. only if towed astern
    N d. Need not be lighted

329: BOTH INTERNATIONAL & INLAND Diagram "C" shows the arc of visibility of a __________. (DIAGRAM 23 )

    N a. white masthead light
    N b. red sidelight
    N c. stern light
    Y d. None of the above

371: INTERNATIONAL ONLY If a towing vessel and her tow are severely restricted in their ability to deviate from their course, the towing vessel shall show lights in addition to her towing identification lights. These additional lights shall be shown if the tow is __________.

    N a. pushed ahead
    N b. towed alongside
    Y c. towed astern
    N d. All of the above

4118: BOTH INTERNATIONAL & INLAND When should the fog signal of a manned vessel under tow be sounded?

    Y a. After the towing vessel's fog signal
    N b. Before the towing vessel's fog signal
    N c. Approximately one minute after the towing vessel's fog signal
    N d. If the towing vessel is sounding a fog signal, the manned vessel being towed is not required to sound any fog signal.

4127: BOTH INTERNATIONAL & INLAND A vessel will NOT show sidelights when __________.

    N a. underway but not making way
    N b. making way, not under command
    Y c. not under command, not making way
    N d. trolling underway

4151: BOTH INTERNATIONAL & INLAND While underway in fog you hear a vessel sound one prolonged blast followed by two short blasts. What does this signal indicate?

    Y a. A vessel towing
    N b. A vessel being towed
    N c. A pilot vessel engaged on pilotage duty
    N d. A vessel aground

4155: BOTH INTERNATIONAL & INLAND A vessel towing is showing three forward white masthead lights in a vertical line. This means that the length of the __________.

    N a. towing vessel is less than 50 meters
    N b. towing vessel is greater than 50 meters
    N c. tow is less than 200 meters
    Y d. tow is greater than 200 meters

4167: BOTH INTERNATIONAL & INLAND A vessel which is "restricted in her ability to maneuver" under the Rules, is a vessel which is __________.

    Y a. mineclearing
    N b. engaged in fishing
    N c. at anchor
    N d. not under command

4182: BOTH INTERNATIONAL & INLAND Distress signals may be __________.

    N a. red flares
    N b. smoke signals
    N c. sound signals
    Y d. Any of the above

4213: BOTH INTERNATIONAL & INLAND Which statement concerning whistle signals is FALSE?

    N a. When a pushing vessel and a vessel pushed are connected in a composite unit, the unit sounds the fog signal of a power-driven vessel.
    N b. A vessel at anchor may sound one short, one prolonged, and one short blast.
    N c. A pilot vessel may sound an identity signal on the whistle.
    Y d. A vessel engaged in towing in fog shall sound a fog signal at intervals of one minute.

4243: BOTH INTERNATIONAL & INLAND In reduced visibility, you hear two prolonged blasts of a whistle. This signal is sounded by a __________.

    Y a. power-driven vessel dead in the water
    N b. sailing vessel on the port tack
    N c. vessel not under command
    N d. vessel fishing with nets

4298: INTERNATIONAL ONLY A single vessel being towed alongside shall exhibit __________.

    N a. one all-round white light
    Y b. sidelights and a stern light
    N c. only the outboard sidelight and a stern light
    N d. a masthead light, sidelights, and a stern light

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.

4375: BOTH INTERNATIONAL & INLAND You are underway in fog when you hear a signal of three strokes of a bell, a rapid ringing of the bell, and three more strokes of the bell. This signal indicates a vessel __________.

    N a. at anchor, giving warning
    Y b. aground
    N c. at anchor, greater than 100 meters
    N d. not under command at anchor

4401: BOTH INTERNATIONAL & INLAND You are underway in heavy fog. You hear the fog signal of a vessel which is somewhere ahead of your vessel. You must __________.

    N a. slow to moderate speed and navigate with caution
    N b. maintain speed and sound the danger signal
    N c. stop engines and navigate with caution
    Y d. slow to bare steerageway and navigate with caution

4454: BOTH INTERNATIONAL & INLAND In a crossing situation, a stand-on vessel which is forced to take action in order to avoid collision with a vessel on her own port side shall, if possible, avoid __________.

    Y a. turning to port
    N b. turning to starboard
    N c. decreasing speed
    N d. increasing speed

4532: BOTH INTERNATIONAL & INLAND The term "power-driven vessel" refers to any vessel __________.

    N a. with propelling machinery onboard whether in use or not
    N b. making way against the current
    Y c. with propelling machinery in use
    N d. traveling at a speed greater than that of the current

4655: BOTH INTERNATIONAL & INLAND Which vessels shall turn off their sidelights?

    N a. All vessels that are not under command
    Y b. All fishing vessels that are not making way
    N c. All sailing vessels which are becalmed
    N d. All vessels engaged in underwater operations

4730: INLAND ONLY Which of the following signals may be exhibited by a vessel trawling in close proximity to other fishing vessels?

    Y a. Two white lights in a vertical line
    N b. A red light over a white light in a vertical line
    N c. Two fixed yellow lights in a vertical line
    N d. All of the above

4827: BOTH INTERNATIONAL & INLAND The Rules state that vessels may depart from the requirements of the Rules when __________.

    N a. operating in restricted visibility
    N b. operating in a narrow channel
    Y c. necessary to avoid immediate danger
    N d. the Master enters it in the ship's log

8022: INTERNATIONAL ONLY You are approaching another vessel and will pass starboard to starboard without danger if no course changes are made. You should __________.

    N a. hold course and sound a two blast whistle signal
    Y b. hold course and sound no whistle signal
    N c. change course to the right and sound one blast
    N d. hold course and sound two prolonged and two short blasts

8074: INTERNATIONAL ONLY Two prolonged blasts followed by one short blast on the whistle is a signal which would be sounded by a vessel __________.

    Y a. overtaking another in a narrow channel
    N b. anchored
    N c. engaged in mineclearance
    N d. engaged in fishing

8088: INTERNATIONAL ONLY A 20-meter power-driven vessel pushing ahead or towing alongside will display __________.

    N a. two towing lights in a vertical line
    N b. a towing light above the stern light
    N c. two all-round red lights at the masthead
    Y d. two masthead lights in a vertical line