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.


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


74: INLAND ONLY Which term is NOT used in the Inland Navigation Rules?


112: INLAND ONLY While underway, you sight the lights shown, with the yellow lights flashing. You should __________. (DIAGRAM 81 )


209: INLAND ONLY A single vessel being towed alongside shall show __________.

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

338: 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 )

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

345: 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. This signal means __________. (DIAGRAM 42 )

    N a. "I intend to overtake you on my starboard side"
    N b. "I am operating astern propulsion"
    Y c. "I intend to leave you on my port side"
    N d. None of the above

4049: BOTH INTERNATIONAL & INLAND Your vessel is NOT making way, but is not in any way disabled. Another vessel is approaching you on your starboard beam. Which statement is TRUE?

    N a. The other vessel must give way since your vessel is stopped.
    Y b. Your vessel is the give-way vessel in a crossing situation.
    N c. You should be showing the lights or shapes for a vessel not under command.
    N d. You should be showing the lights or shapes for a vessel restricted in her ability to maneuver.

4052: BOTH INTERNATIONAL & INLAND The lights displayed would be shown by a vessel which is __________. (DIAGRAM 44 )

    Y a. aground
    N b. not under command and is dead in the water
    N c. not under command and is making way
    N d. laying or picking up navigation marks

4062: BOTH INTERNATIONAL & INLAND You are in charge of a power-driven vessel navigating at night. You sight the red sidelight of another vessel on your port bow. The other vessel's after masthead light is to the right of her forward masthead light. You should __________.

    Y a. hold course and speed
    N b. alter course to port
    N c. stop engines
    N d. sound the danger signal

4148: BOTH INTERNATIONAL & INLAND You are in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must __________.

    N a. stop your engines
    N b. sound two prolonged blasts of the whistle
    N c. sound the danger signal
    Y d. slow to bare steerageway

4187: BOTH INTERNATIONAL & INLAND In a crossing situation on open waters, a sailing vessel shall keep out of the way of all the following vessels EXCEPT a __________.

    N a. vessel not under command
    N b. vessel restricted in her ability to maneuver
    Y c. power-driven vessel approaching on her starboard side
    N d. vessel fishing

4350: BOTH INTERNATIONAL & INLAND While underway in fog you hear the rapid ringing of a bell. What does this signal indicate?

    N a. A vessel backing down
    N b. A sailboat underway
    Y c. A vessel at anchor
    N d. A vessel drifting

4382: BOTH INTERNATIONAL & INLAND While underway in fog, you hear a vessel sound four short blasts in succession. What does this signal indicate?

    Y a. A pilot vessel
    N b. A vessel being towed
    N c. A vessel fishing
    N d. A sailboat

4427: BOTH INTERNATIONAL & INLAND A towing light, according to the Rules, is a __________.

    N a. white light
    N b. red light
    Y c. yellow light
    N d. blue light

4429: BOTH INTERNATIONAL & INLAND Two vessels are meeting head-on. How must the vessels pass?

    N a. One vessel must alter course while the other must continue on its course.
    N b. The vessels should determine which will alter course by sounding 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.

4462: BOTH INTERNATIONAL & INLAND A fog signal of one prolonged blast followed by four short blasts would mean the presence of a __________.

    N a. vessel being towed
    N b. fishing vessel trawling
    N c. vessel at anchor warning of her location
    Y d. power-driven pilot vessel on station underway

4483: BOTH INTERNATIONAL & INLAND A vessel restricted in her ability to maneuver shall __________.

    Y a. turn off her sidelights when not making way
    N b. when operating in restricted visibility, sound a whistle signal of two prolonged and one short blast
    N c. show a day-shape of two diamonds in a vertical line
    N d. keep out of the way of a vessel engaged in fishing

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

4502: INLAND ONLY Vessels engaged in fishing may show the additional signals described in Annex II to the Rules when they are __________.

    N a. trolling
    N b. fishing in a traffic separation zone
    N c. in a narrow channel
    Y d. in close proximity to other vessels engaged in fishing

4598: BOTH INTERNATIONAL & INLAND A vessel engaged in fishing while at anchor shall sound a fog signal of __________.

    Y a. one prolonged and two short blasts at two-minute intervals
    N b. one prolonged and three short blasts at two-minute intervals
    N c. a rapid ringing of the bell for five seconds at one-minute intervals
    N d. a sounding of the bell and gong at one-minute intervals

4652: BOTH INTERNATIONAL & INLAND A vessel displaying the day-shapes shown is __________. (DIAGRAM 18 )

    N a. towing astern with a tow greater than 200 meters in length
    N b. not under command
    Y c. dredging
    N d. carrying dangerous cargo

4674: BOTH INTERNATIONAL & INLAND You are on watch in fog. Which vessel is "in sight"?

    Y a. A vessel that you can see from the bridge
    N b. A radar target of which you have determined the course and speed
    N c. A vessel from which you can hear the fog signal
    N d. All of the above

4700: BOTH INTERNATIONAL & INLAND What does the word "length" refer to?

    N a. Length between the perpendiculars
    Y b. Length overall
    N c. Waterline length
    N d. Registered length

4713: BOTH INTERNATIONAL & INLAND What equipment for fog signals is required for a vessel 20 meters in length?

    Y a. Whistle and bell only
    N b. Whistle only
    N c. Bell only
    N d. Whistle, bell, and gong

4819: BOTH INTERNATIONAL & INLAND Which breadth shown represents the breadth as defined in the Rules? (DIAGRAM 87 )

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

4834: BOTH INTERNATIONAL & INLAND To be considered "engaged in fishing" under the Rules, a vessel must be __________.

    N a. power-driven
    N b. showing lights or shapes for a vessel restricted in its ability to maneuver
    N c. using nets
    Y d. using fishing apparatus which restricts maneuverability

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.

8018: INTERNATIONAL ONLY On open water, a power-driven vessel coming up dead astern of another vessel and altering her course to starboard so as to pass on the starboard side of the vessel ahead would sound __________.

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

8070: INTERNATIONAL ONLY In addition to her running lights, an underway vessel constrained by her draft may carry in a vertical line __________.

    N a. a red light, a white light, and a red light
    N b. two red lights
    N c. two white lights
    Y d. three red lights

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