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.


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 )


234: BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown. Which color light will vessel "A" observe on vessel "B"? (DIAGRAM 17 )


300: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown is a(n) __________. (DIAGRAM 79 )


320: BOTH INTERNATIONAL & INLAND Which dayshape(s) would be displayed by the vessel engaged in the operation indicated by the lights shown. (DIAGRAM 82 )

    N a. a cylinder
    N b. a ball, a diamond and another ball
    Y c. two cones with apexes together
    N d. a diamond

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

    Y a. red sidelight
    N b. green sidelight
    N c. masthead light
    N d. stern light

4003: BOTH INTERNATIONAL & INLAND What is used to show the presence of a partly submerged object being towed?

    N a. A diamond shape on the towed object
    N b. An all-round light at each end of the towed object
    N c. A searchlight from the towing vessel in the direction of the tow
    Y d. All of the above

4158: BOTH INTERNATIONAL & INLAND A 25-meter vessel trawling will show the dayshape(s) consisting of __________.

    N a. a basket
    N b. two balls
    Y c. two cones, apexes together
    N d. a cone, apex downward

4207: BOTH INTERNATIONAL & INLAND Your power-driven vessel is underway when you sight a sailing vessel on your port bow. Which vessel is the "stand-on" vessel?

    N a. The sailboat, because it is to port of your vessel
    Y b. The sailboat, because it is under sail
    N c. Your vessel, because it is a power-driven vessel
    N d. Your vessel, because it is to starboard of the sailboat

4232: BOTH INTERNATIONAL & INLAND The use of the signal consisting of five or more short blasts on the ship's whistle __________.

    N a. replaces directional signals
    N b. makes the other vessel the give-way vessel
    Y c. indicates doubt as to the other vessel's action
    N d. makes it necessary to slow or stop

4232: BOTH INTERNATIONAL & INLAND The use of the signal consisting of five or more short blasts on the ship's whistle __________.

    N a. replaces directional signals
    N b. makes the other vessel the give-way vessel
    Y c. indicates doubt as to the other vessel's action
    N d. makes it necessary to slow or stop

4247: BOTH INTERNATIONAL & INLAND What day-shape is to be shown by a vessel aground?

    N a. A cylinder
    N b. Two cones with their apexes together
    N c. Two black balls in a vertical line
    Y d. Three black balls in a vertical line

4294: BOTH INTERNATIONAL & INLAND At night you observe a vessel ahead show three flashes of a white light. This signal indicates that the vessel ahead is __________.

    N a. in distress
    N b. approaching a bend in the channel
    Y c. operating astern propulsion
    N d. intending to overtake another vessel

4322: BOTH INTERNATIONAL & INLAND In which situation do you think a risk of collision exists?

    N a. A vessel is 22° on your port bow, range increasing, bearing changing slightly to the right.
    N b. A vessel is broad on your starboard beam, range decreasing, bearing changing rapidly to the right.
    N c. A vessel is 22° abaft your port beam, range increasing, bearing is constant.
    Y d. A vessel is on your starboard quarter, range decreasing, bearing is constant.

4352: BOTH INTERNATIONAL & INLAND What is the minimum vessel length which must show two white masthead lights, one forward and one aft, when underway at night?

    N a. 7 meters
    N b. 20 meters
    Y c. 50 meters
    N d. 100 meters

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.

4397: BOTH INTERNATIONAL & INLAND In a crossing situation, a vessel fishing must keep out of the way of a vessel which is __________.

    N a. under sail
    N b. towing
    Y c. restricted in her ability to maneuver
    N d. engaged in pilotage duty

4416: BOTH INTERNATIONAL & INLAND Navigation lights must be displayed in all weathers from sunset to sunrise. They also __________.

    N a. must be displayed when day signals are being used
    N b. must be displayed when moored to a pier
    N c. may be extinguished at night on open waters when no other vessels are in the area
    Y d. may be displayed during daylight

4422: BOTH INTERNATIONAL & INLAND Each prolonged blast on whistle signals used by a power-driven vessel in fog, whether making way or underway but not making way, is __________.

    N a. about one second
    N b. two to four seconds
    Y c. four to six seconds
    N d. eight to ten seconds

4444: BOTH INTERNATIONAL & INLAND Which vessel must exhibit a conical shape, apex downwards?

    N a. A 10-meter vessel engaged in fishing
    Y b. A 15-meter vessel proceeding under sail when also being propelled by machinery
    N c. A 20-meter vessel restricted in her ability to maneuver
    N d. All of the above

4619: BOTH INTERNATIONAL & INLAND Which vessel is NOT to impede the passage of a vessel which can only navigate safely within a narrow channel?

    N a. Any vessel less than 20 meters in length
    N b. Any sailing vessel
    N c. A vessel engaged in fishing
    Y d. All of the above

4620: BOTH INTERNATIONAL & INLAND A tug is towing three manned barges in line in fog. The second 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 and two short blasts

4690: BOTH INTERNATIONAL & INLAND Which vessel would sound a fog signal consisting of the ringing of a bell for 5 seconds?

    N a. A vessel engaged in fishing, at anchor
    N b. A vessel restricted in its ability to maneuver, at anchor
    Y c. A sailing vessel, at anchor
    N d. All of the above

4847: BOTH INTERNATIONAL & INLAND The rules require which factor to be taken into account when determining safe speed?

    N a. The construction of the vessel
    N b. The experience of the vessel's crew
    Y c. The location of vessels detected by radar
    N d. All of the above

8009: INTERNATIONAL ONLY You are underway on the high seas in restricted visibility. You hear a fog signal of one prolonged and two short blasts. It could be any of the following EXCEPT a vessel __________.

    N a. minesweeping
    N b. engaged in fishing
    N c. constrained by her draft
    Y d. being towed

8038: INTERNATIONAL ONLY In which case would an overtaking vessel sound a whistle signal of two prolonged followed by one short blast?

    N a. When overtaking in restricted visibility
    Y b. When overtaking in a narrow channel
    N c. When overtaking on open waters
    N d. When no other vessels are in the immediate area

8044: INTERNATIONAL ONLY In international waters, you are on Vessel "I" in the situation as shown. Vessel "II" sounds one short blast. Which action should you take? (DIAGRAM 36 )

    N a. Sound one short blast and hold course and speed.
    Y b. Hold course and speed
    N c. Sound one short blast and slow down or turn to starboard.
    N d. Sound two short blasts, slow down and turn to port

8057: INTERNATIONAL ONLY Your vessel is backing out of a slip in a harbor and you can see that other vessels are approaching. You should sound __________.

    Y a. three short blasts when leaving the slip
    N b. one prolonged blast followed by three short blasts when the last line is taken aboard
    N c. one prolonged blast only
    N d. the danger signal

8059: INTERNATIONAL ONLY You are in sight of a power-driven vessel that sounds two short blasts of the whistle. This signal means that the vessel __________.

    Y a. is altering course to port
    N b. is altering course to starboard
    N c. intends to leave you on her port side
    N d. intends to leave you on her starboard side

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

8116: INTERNATIONAL ONLY Which vessel shall avoid impeding the safe passage of a vessel constrained by her draft?

    N a. A vessel not under command
    Y b. A sailing vessel
    N c. A vessel restricted in her ability to maneuver
    N d. All of the above