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.


60: INLAND ONLY Two vessels are meeting on a clear day and will pass less than half a mile apart. In this situation whistle signals __________.


78: INLAND ONLY Under the Inland Navigation Rules, what is the meaning of a one short blast signal used when meeting another vessel?


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


158: BOTH INTERNATIONAL & INLAND The lights shown are exhibited by a vessel __________. (DIAGRAM 49 )

    N a. dredging while underway
    Y b. not under command
    N c. engaged in trawling
    N d. engaged in mineclearance

187: BOTH INTERNATIONAL & INLAND You are in charge of a power-driven vessel making way in dense fog. You observe what appears to be another vessel on radar half a mile distant on your port bow and closing. You must __________.

    N a. sound the danger signal
    N b. exchange passing signals
    Y c. sound one prolonged blast
    N d. sound one short, one prolonged, and one short blast

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

    N a. Green
    Y b. White
    N c. Flashing red
    N d. Yellow over yellow

266: INLAND ONLY Two power-driven vessels are meeting in a narrow channel on the Great Lakes as shown. Vessel "A" is downbound with a following current. Vessel "B" shall __________. (DIAGRAM 37 )

    N a. propose the manner of passage
    N b. have the right of way
    N c. initiate the maneuvering signals
    Y d. None of the above

341: 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 )

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

388: BOTH INTERNATIONAL & INLAND Lighting requirements in inland waters are different from those in international waters for __________.

    N a. barges being pushed ahead
    N b. vessels being towed alongside
    N c. vessels pushing ahead
    Y d. All of the above

4022: BOTH INTERNATIONAL & INLAND A sailing vessel underway may exhibit __________.

    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

4038: BOTH INTERNATIONAL & INLAND A bell is used to sound a fog signal for a __________.

    N a. power-driven vessel underway
    Y b. sailing vessel at anchor
    N c. vessel engaged in fishing
    N d. vessel not under command

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

4115: BOTH INTERNATIONAL & INLAND What is the minimum sound signaling equipment required aboard a vessel 24 meters in length?

    N a. A bell only
    N b. A whistle only
    Y c. A bell and a whistle
    N d. Any means of making an efficient sound signal

4164: BOTH INTERNATIONAL & INLAND While underway in fog you hear a whistle signal consisting of one prolonged blast followed immediately by two short blasts. This signal is sounded in fog by __________.

    N a. vessels at anchor, not engaged in fishing
    Y b. vessels underway and towing
    N c. vessels in danger
    N d. pilot vessels

4279: BOTH INTERNATIONAL & INLAND You are watching another vessel approach and her compass bearing is not changing. This means that __________.

    N a. you are the stand-on vessel
    Y b. a risk of collision exists
    N c. a special circumstances situation exists
    N d. the other vessel is dead in the water

4284: BOTH INTERNATIONAL & INLAND Which statement is true concerning a vessel equipped with operational radar?

    N a. The Master of the vessel must be on the bridge when the radar is in use.
    N b. The radar equipment is only required to be used in restricted visibility.
    N c. The use of a radar excuses a vessel from the need of a look-out.
    Y d. This equipment must be used to obtain early warning of risk of collision.

4335: BOTH INTERNATIONAL & INLAND At night a vessel displaying the lights shown is __________. (DIAGRAM 82 )

    N a. sailing
    Y b. fishing
    N c. a pilot boat
    N d. anchored

4410: BOTH INTERNATIONAL & INLAND The rules state that vessels may depart from the requirements of the Rules when __________.

    N a. there are no other vessels around
    N b. operating in a narrow channel
    N c. the Master enters it in the ship's log
    Y d. necessary to avoid immediate danger

4412: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown is __________. (DIAGRAM 44 )

    N a. towing
    N b. conducting underwater survey operations
    N c. drifting
    Y d. aground

4441: BOTH INTERNATIONAL & INLAND At night, power-driven vessels less than 12 meters in length may, instead of the underway lights for vessels under 50 meters, show which lights?

    N a. Sidelights and stern light
    Y b. One all-round white light and sidelights
    N c. Masthead light only
    N d. Stern light only

4489: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning a vessel of 150 meters in length, at anchor?

    N a. She may show an all-round white light where it can best be seen.
    Y b. She must show all-round white lights forward and aft.
    N c. The showing of working lights is optional.
    N d. None of the above

4526: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning risk of collision?

    N a. Risk of collision never exists if the compass bearing of the other vessel is changing.
    Y b. Proper use shall be made of radar equipment to determine risk of collision.
    N c. Risk of collision must be determined before any action can be taken by a vessel.
    N d. Risk of collision exists if the vessels will pass within half a mile of each other.

4536: BOTH INTERNATIONAL & INLAND If a sailing vessel with the wind on the port side sees a sailing vessel to windward and cannot tell whether the other vessel has the wind on the port or starboard side, she shall __________.

    N a. hold course and speed
    N b. sound the danger signal
    Y c. keep out of the way of the other vessel
    N d. turn to port and come into the wind

4575: BOTH INTERNATIONAL & INLAND A vessel is overtaking when she can see which light(s) of a vessel ahead?

    Y a. Only the stern light of the vessel
    N b. One sidelight and a masthead light of the vessel
    N c. Only a sidelight of the vessel
    N d. The masthead lights of the vessel

4595: BOTH INTERNATIONAL & INLAND Which vessel, when anchored at night, would NOT be required to show anchor lights?

    N a. A power-driven vessel
    N b. A vessel on pilotage duty
    Y c. A vessel dredging
    N d. A vessel restricted in her ability to maneuver

4597: BOTH INTERNATIONAL & INLAND A vessel not under command shall display __________.

    Y a. two red lights at night and two black balls during daylight
    N b. two red lights at night and three black balls during daylight
    N c. three red lights at night and two black balls during daylight
    N d. three red lights at night and three black balls during daylight

6570: BOTH INTERNATIONAL & INLAND A traffic separation zone is that part of a traffic separation scheme which __________.

    N a. is between the scheme and the nearest land
    N b. contains all the traffic moving in one direction
    N c. is designated as an anchorage area
    Y d. separates traffic proceeding in one direction from traffic proceeding in the opposite direction

8026: INTERNATIONAL ONLY You are in sight of another vessel in a crossing situation, and the other vessel sounds one short blast. You are going to hold course and speed. You should __________.

    N a. answer with one short blast
    N b. answer with two short blasts
    N c. sound the danger signal
    Y d. sound no whistle signal

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

8076: INTERNATIONAL ONLY You are underway in a narrow channel, and you are being overtaken by a vessel astern. After the overtaking vessel sounds the proper signal indicating his intention to pass your vessel on your starboard side, you signal your agreement by sounding __________.

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