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.


8: INLAND ONLY If you were coming up on another power-driven vessel from dead astern and desired to overtake on the other vessel's starboard side, which whistle signal would you sound?


80: INLAND ONLY While underway at night, you see two yellow lights displayed in a vertical line. This should indicate to you a(n) __________.


101: INLAND ONLY You are overtaking another power-driven vessel in a narrow channel. The other vessel will have to move to allow you to pass. You wish to overtake the other vessel on her starboard side. Your first whistle signal should be __________.


109: BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown. Vessel "B" is an air-cushion vessel operating in the nondisplacement mode. In addition to a steady white light which other light will vessel "A" observe on vessel "B"? (DIAGRAM 17 )

    N a. Steady green light
    N b. Flashing red light
    Y c. Flashing yellow light
    N d. Flashing white light

123: INLAND ONLY What is not contained in the Inland Navigation Rules?

    N a. An inconspicuous, partly submerged object
    N b. Lights on pipelines
    Y c. A vessel constrained by her draft
    N d. An air-cushion vessel

169: BOTH INTERNATIONAL & INLAND You are on a vessel heading due north and see the lights shown one point on your port bow. This vessel could be heading __________. (DIAGRAM 51 )

    N a. NW
    N b. SW
    Y c. SE
    N d. NE

194: BOTH INTERNATIONAL & INLAND You are on vessel "A" and proceeding down a narrow channel as shown. You can only navigate within the channel and vessel "B" is crossing so as to involve risk of collision. Which action would be most prudent? (DIAGRAM 40 )

    N a. Back down and allow vessel "B" to cross ahead.
    N b. Alter course to starboard to give him more room.
    N c. Maintain course and speed.
    Y d. Sound the danger signal and take evasive action.

254: INLAND ONLY Vessels "A" and "B" are meeting on a river as shown and will pass 1/4 mile apart. Which is one of the lights on vessel "B" that you will see if you are on vessel "A"? (DIAGRAM 41 )

    N a. red sidelight
    N b. yellow towing light
    Y c. special flashing light
    N d. All of the above

255: INTERNATIONAL ONLY Vessels "A" and "B" are meeting on a river as shown and will pass 1/4 mile apart. Which light on vessel "B" will you see if you are on vessel "A"? (DIAGRAM 41 )

    N a. special flashing yellow light
    N b. flashing blue light
    N c. two yellow towing lights
    Y d. None of the above

292: BOTH INTERNATIONAL & INLAND The tug shown is greater than 50 meters and severely restricted in her ability to deviate from her course. Which lights would be displayed from the towing vessel? (DIAGRAM 24 )

    N a. Two white masthead lights, red-white-red all round lights, sidelights, stern light and a towing light
    N b. Three white masthead lights, red-white-red all round lights, sidelights and two towing lights
    N c. Three white masthead lights, two all round red lights, sidelights, stern light and a towing light
    Y d. None of the above

340: 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
    N b. one prolonged blast
    N c. two short blasts
    Y d. None of the above

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

    N a. stand-on vessel
    N b. overtaking vessel
    Y c. give-way vessel
    N d. None of the above

4043: BOTH INTERNATIONAL & INLAND You are the watch officer on a power-driven vessel and notice a large sailing vessel approaching from astern. You should __________.

    N a. slow down
    N b. sound one short blast and change course to starboard
    N c. sound two short blasts and change course to port
    Y d. hold your course and speed

4166: BOTH INTERNATIONAL & INLAND A power-driven vessel towing another vessel astern (tow less than 200 meters) shall show __________.

    N a. three masthead lights in a vertical line instead of either the forward or after masthead light
    Y b. two masthead lights in a vertical line instead of either the forward or after masthead lights
    N c. two towing lights in a vertical line at the stern
    N d. a small white light aft of the funnel

4198: BOTH INTERNATIONAL & INLAND You are underway and approaching a bend in the channel where vessels approaching from the opposite direction cannot be seen. You should sound __________.

    Y a. one blast, 4 to 6 seconds in duration
    N b. three blasts, 4 to 6 seconds in duration
    N c. one continuous blast until you are able to see around the bend
    N d. one blast, 8 to 10 seconds in duration

4262: BOTH INTERNATIONAL & INLAND A vessel not under command making way at night would show __________.

    N a. two all-round red lights in a vertical line
    N b. anchor lights and sidelights
    N c. two all-round white lights in a vertical line, sidelights and a stern light
    Y d. two all-round red lights in a vertical line, sidelights, and a stern light

4306: BOTH INTERNATIONAL & INLAND Which vessel is directed not to impede the passage of a vessel which can only navigate inside a narrow channel?

    Y a. A vessel of less than 20 meters in length
    N b. A vessel not under command
    N c. A vessel engaged in surveying
    N d. All of the above

4310: BOTH INTERNATIONAL & INLAND Which vessel is to be regarded as a vessel "restricted in her ability to maneuver"?

    N a. A vessel fishing with trawls
    N b. A vessel which has lost the use of her steering gear
    N c. A vessel with a draft of such depth that she cannot change her course
    Y d. A vessel engaged in mineclearing

4385: BOTH INTERNATIONAL & INLAND To be considered "engaged in fishing" according to the Rules of the Road, a vessel must be __________.

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

4448: BOTH INTERNATIONAL & INLAND Vessel "A" is underway and pushing ahead when vessel "B" is sighted off the starboard bow as shown. Which statement is TRUE? (DIAGRAM 5 )

    N a. Vessel "A" is the stand-on vessel because it is to the port side of vessel "B".
    N b. Vessel "A" is the stand-on vessel because it is pushing ahead.
    Y c. Vessel "B" is the stand-on vessel because it is to starboard of vessel "A".
    N d. Neither vessel is the stand-on vessel.

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

4485: BOTH INTERNATIONAL & INLAND You are underway in reduced visibility. You hear the fog signal of another vessel about 20 on your starboard bow. Risk of collision may exist. You should __________.

    N a. alter course to starboard to pass around the other vessel
    Y b. reduce your speed to bare steerageway
    N c. slow your engines and let the other vessel pass ahead of you
    N d. alter course to port to pass the other vessel on its portside

4498: BOTH INTERNATIONAL & INLAND In the daytime, you see a large sailing vessel on the beam. You know that she is also propelled by machinery if she shows __________.

    N a. a basket
    N b. a black ball
    Y c. a black cone
    N d. two black cones

4527: BOTH INTERNATIONAL & INLAND You are fishing at night, and you sight a vessel showing three lights in a vertical line. The upper and lower lights are red and the middle light is white. Which statement is TRUE?

    Y a. You must keep out of the way of the other vessel.
    N b. The other vessel is responsible to keep out of your way.
    N c. The other vessel is at anchor.
    N d. The rule of special circumstances applies.

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

4664: BOTH INTERNATIONAL & INLAND You are approaching a narrow channel. You see a vessel that can only be navigated safely within the channel. You MUST __________.

    N a. hold your course and speed
    N b. sound the danger signal
    Y c. not cross the channel if you might impede the other vessel
    N d. initiate an exchange of passing signals

4681: BOTH INTERNATIONAL & INLAND A vessel may exhibit lights other than those prescribed by the Rules as long as the additional lights __________.

    N a. are not the same color as either side light
    N b. have a lesser range of visibility than the prescribed lights
    Y c. do not impair the visibility or distinctive character of the prescribed lights
    N d. All of the above

4695: BOTH INTERNATIONAL & INLAND While underway in fog, you hear a vessel ahead sound two short blasts on the whistle. You should __________.

    N a. not sound any whistle signals until the other vessel is sighted
    Y b. sound only fog signals until the other vessel is sighted
    N c. sound whistle signals only if you change course
    N d. sound two short blasts and change course to the left

4710: BOTH INTERNATIONAL & INLAND Which vessel would exhibit sidelights when underway and not making way?

    N a. A vessel engaged in fishing
    N b. A vessel not under command
    N c. A vessel engaged in dredging
    Y d. A power-driven vessel

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