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.


54: INLAND ONLY A barge more than 50 meters long would be required to show how many white anchor lights when anchored in a Secretary approved "special anchorage area"?


200: INLAND ONLY A partially submerged object towed by a vessel must show during the day one __________.


363: BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown. Vessel "A" sounds one short blast on the whistle. Vessel "B" is the __________. (DIAGRAM 42 )


4017: BOTH INTERNATIONAL & INLAND A 200-meter vessel is aground in fog. Which signal is optional?

    N a. A bell signal
    N b. A gong signal
    Y c. A whistle signal
    N d. All of the above

4147: BOTH INTERNATIONAL & INLAND Which vessel would have no white lights visible when meeting her head-on?

    N a. A vessel trawling
    N b. A vessel restricted in her ability to maneuver
    N c. A vessel mineclearing
    Y d. A vessel not under command

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

4181: BOTH INTERNATIONAL & INLAND According to the Rules, which vessel is NOT "restricted in her ability to maneuver"?

    N a. A vessel servicing a navigation marker
    Y b. A sailing vessel
    N c. A vessel mineclearing
    N d. A vessel dredging

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

4288: BOTH INTERNATIONAL & INLAND A vessel is carrying three lights in a vertical line. The highest and lowest of these are red and the middle light is white. Which statement is always TRUE?

    N a. During the day, she would display three balls in a vertical line.
    Y b. If making way, she would show masthead lights at night.
    N c. If at anchor, she need not show anchor lights while displaying identifying lights.
    N d. Her fog signal would consist of a rapid ringing of a bell for five seconds every minute.

4293: BOTH INTERNATIONAL & INLAND Which vessel is to sound a fog signal of one prolonged followed by two short blasts?

    N a. A vessel not under command
    N b. A sailing vessel underway
    N c. A vessel restricted in its ability to maneuver, at anchor
    Y d. All of the above

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.

4393: BOTH INTERNATIONAL & INLAND Which light(s) is(are) AMONG those shown by a 200-meter vessel at anchor?

    N a. In the forepart of the vessel, a 225° white light
    N b. In the after part of the vessel, a 135° white light
    Y c. Any available working lights to illuminate the decks
    N d. In the fore part of the vessel, a 135° white light

4404: BOTH INTERNATIONAL & INLAND A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to change course shall, when making way, exhibit __________.

    N a. the masthead lights for a towing vessel
    N b. the lights for a vessel restricted in its ability to maneuver
    N c. sidelights, stern light and towing light
    Y d. All of the above

4432: BOTH INTERNATIONAL & INLAND A vessel displaying ONLY the lights shown is __________. (DIAGRAM 61 )

    N a. fishing
    Y b. a pilot vessel at anchor
    N c. a fishing vessel aground
    N d. fishing and hauling her nets

4476: BOTH INTERNATIONAL & INLAND At night you sight a vessel displaying one green light. This light could indicate a __________.

    N a. vessel drifting
    N b. vessel at anchor
    N c. small motorboat underway
    Y d. sailboat underway

4500: BOTH INTERNATIONAL & INLAND Your power-driven vessel is stopped and making no 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.

4501: BOTH INTERNATIONAL & INLAND For identification purposes at night, U.S. Navy submarines on the surface may display an intermittent flashing light of which color?

    Y a. Amber (yellow)
    N b. White
    N c. Blue
    N d. Red

4517: BOTH INTERNATIONAL & INLAND Which vessel must exhibit forward and after masthead lights when underway?

    N a. A 200-meter sailing vessel
    Y b. A 50-meter power-driven vessel
    N c. A 100-meter vessel engaged in fishing
    N d. All of the above

4645: BOTH INTERNATIONAL & INLAND What is required of a vessel navigating near an area of restricted visibility?

    N a. A power-driven vessel shall have her engines ready for immediate maneuver.
    N b. She must sound appropriate sound signals.
    N c. If she detects another vessel by radar, she shall determine if risk of collision exists.
    Y d. All of the above

4665: BOTH INTERNATIONAL & INLAND What is the minimum sound signaling equipment required aboard a vessel 10 meters in length?

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

4680: BOTH INTERNATIONAL & INLAND Day-shapes must be displayed __________.

    N a. between sunset and sunrise
    N b. only between 8 AM and 4 PM
    Y c. during daylight hours in any visibility
    N d. during daylight hours in unrestricted visibility only

4693: BOTH INTERNATIONAL & INLAND A 200-meter vessel is aground in restricted visibility. Which signal is optional?

    Y a. A whistle signal
    N b. A gong signal
    N c. A bell signal
    N d. All of the above are optional.

4694: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning fog signals?

    N a. All fog signals for sailing vessels are to be given at intervals of not more than one minute.
    Y b. A vessel aground may sound a whistle signal.
    N c. A vessel not under command sounds the same fog signal as a vessel towed.
    N d. The identity signal of a pilot vessel is the only fog signal sounded by such a vessel.

4701: 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
    Y b. power-driven pilot vessel on station underway
    N c. fishing vessel trawling
    N d. vessel at anchor warning of her location

4849: BOTH INTERNATIONAL & INLAND "safe speed" is defined as that speed where __________.

    N a. you can stop within your visibility range
    N b. the vessel is not subject to vibrations
    N c. you are traveling slower than surrounding vessels
    Y d. you can take proper and effective action to avoid collision

4865: BOTH INTERNATIONAL & INLAND Your 15-meter vessel is crossing a narrow channel and a large cargo vessel to starboard is within the channel and crossing your course. You should __________.

    N a. hold your course and speed
    N b. sound the danger signal
    Y c. keep out of the way of the cargo vessel
    N d. do not cross the channel

4866: BOTH INTERNATIONAL & INLAND If two sailing vessels are running free with the wind on the same side, which one must keep clear of the other?

    N a. The one with the wind closest abeam
    Y b. The one to windward
    N c. The one to leeward
    N d. The one that sounds the first whistle signal

8027: INTERNATIONAL ONLY Two prolonged blasts followed by one short blast on the whistle is a signal which could be sounded by a __________.

    N a. fishing vessel
    N b. vessel anchored
    N c. mineclearing vessel
    Y d. vessel overtaking another in a narrow channel

8068: INTERNATIONAL ONLY A signal of one prolonged, one short, one prolonged, and one short blast, in that order is given by a vessel __________.

    N a. engaged on pilotage duty
    N b. in distress
    N c. at anchor
    Y d. being overtaken in a narrow channel

8131: INTERNATIONAL ONLY What characteristic must a light have if used to signal passing intentions?

    Y a. It must be an all-round white light.
    N b. It must be an alternating blue and white light.
    N c. It must be an all-round white or yellow light.
    N d. It must be an alternating red and yellow light.