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.


9: INLAND ONLY Which statement is TRUE concerning narrow channels?


40: INLAND ONLY The light used to signal passing intentions is a(n) __________.


44: INLAND ONLY What lights are required for a barge being pushed ahead, not being part of a composite unit?


55: INLAND ONLY The lights shown are those of a __________. (DIAGRAM 75 )

    N a. pipeline
    Y b. vessel pushing ahead
    N c. vessel being towed astern
    N d. vessel underway and dredging

75: INLAND ONLY You are on vessel "A", and vessel "B" desires to overtake you on your starboard side as shown. After the vessels have exchanged one blast signals, you should __________. (DIAGRAM 31 )

    N a. alter course to the left
    N b. slow your vessel until vessel "B" has passed
    Y c. hold course and speed
    N d. alter course to the left to give vessel "B" more sea room

97: INLAND ONLY Which statement is TRUE concerning a passing agreement made by radiotelephone?

    N a. Such an agreement is prohibited by the Rules.
    N b. A vessel which has made such an agreement must also sound whistle signals.
    N c. Whistle signals must still be exchanged when passing within half a mile of each other.
    Y d. If agreement is reached by radiotelephone, whistle signals are optional.

287: BOTH INTERNATIONAL & INLAND The lead vessel shown is a __________. (DIAGRAM 24 )

    N a. dredge
    N b. sailing vessel
    N c. power-driven vessel pushing ahead
    Y d. None of the above

295: BOTH INTERNATIONAL & INLAND The display of lights shown could represent a __________. (DIAGRAM 48 )

    N a. submarine on the surface
    Y b. tug and a barge being towed astern
    N c. vessel restricted in her ability to maneuver
    N d. vessel not under command

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

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

350: INTERNATIONAL ONLY Two power-driven vessels are crossing within one half mile of each other as shown. Vessel "A" sounds one short blast of 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

354: INTERNATIONAL ONLY Two power-driven vessels are crossing within one half mile of each other as shown. Vessel "A" sounds one short blast of the whistle. This signal means __________. (DIAGRAM 42 )

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

4094: BOTH INTERNATIONAL & INLAND You are aboard vessel "A" which is towing on open waters when vessel "B", a sailing vessel, is sighted off your port bow as shown. Which vessel is the stand-on? (DIAGRAM 20 )

    N a. Vessel "A" is the stand-on vessel because it is towing.
    N b. Vessel "A" is the stand-on vessel because it is to starboard of vessel "B".
    Y c. Vessel "B" is the stand-on vessel because it is sailing.
    N d. Vessel "B" is the stand-on vessel because it is to port of vessel "A".

4106: BOTH INTERNATIONAL & INLAND What type of vessel or operation is indicated by a vessel showing two cones with the apexes together?

    N a. Sailing vessel
    Y b. Vessel trawling
    N c. Mineclearing
    N d. Dredge

4110: BOTH INTERNATIONAL & INLAND Continuous sounding of a fog whistle by a vessel is a signal __________.

    N a. that the vessel is anchored
    N b. to request the draw span of a bridge to be opened
    Y c. of distress
    N d. that the vessel is broken down and drifting

4112: BOTH INTERNATIONAL & INLAND A vessel, which is unable to maneuver due to some exceptional circumstance, shall exhibit __________.

    N a. during the day, three balls in a vertical line
    N b. during the day, three shapes, the highest and lowest being balls and the middle being a diamond
    Y c. when making way at night, two all-round red lights, sidelights, and a stern light
    N d. when making way at night, masthead lights, sidelights, and a stern light

4145: BOTH INTERNATIONAL & INLAND You are in charge of a 120-meter power-driven vessel at anchor in fog, sounding the required anchor signals. You hear the fog signal of a vessel underway off your port bow. You may sound __________.

    N a. at least five short and rapid blasts
    N b. two short blasts
    Y c. one short, one prolonged, and one short blast
    N d. three short blasts

4157: BOTH INTERNATIONAL & INLAND Which vessel may exhibit identifying lights when not actually engaged in her occupation?

    N a. A trawler
    N b. A fishing vessel
    N c. A tug
    Y d. None of the above

4216: BOTH INTERNATIONAL & INLAND You are approaching a narrow channel. You see a vessel that can only be navigated safely within the channel. You should __________.

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

4228: BOTH INTERNATIONAL & INLAND When is a stand-on vessel FIRST allowed by the Rules to take action in order to avoid collision?

    N a. When the two vessels are less than half a mile from each other.
    Y b. When the give-way vessel is not taking appropriate action to avoid collision.
    N c. When collision is imminent.
    N d. The stand-on vessel is never allowed to take action.

4277: BOTH INTERNATIONAL & INLAND You are underway in a fog when you hear a whistle signal of one prolonged blast followed by two short blasts. This signal could indicate all of the following EXCEPT a vessel __________.

    Y a. being towed
    N b. not under command
    N c. fishing with trawls
    N d. towing astern

4330: BOTH INTERNATIONAL & INLAND While underway in fog, you hear a short blast, a prolonged blast, and a short blast of a whistle. This signal indicates a __________.

    N a. vessel towing in fog
    N b. sailboat underway in fog
    N c. vessel being towed in fog
    Y d. vessel anchored in fog

4343: BOTH INTERNATIONAL & INLAND Risk of collision may exist __________.

    N a. if the compass bearing of an approaching vessel does NOT appreciably change
    N b. even when an appreciable bearing change is evident, particularly when approaching a vessel at close range
    N c. if you observe both sidelights of a vessel ahead for an extended period of time
    Y d. All of the above

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.

4580: BOTH INTERNATIONAL & INLAND You see a vessel displaying ONLY the lights shown. This could be a __________. (DIAGRAM 45 )

    Y a. pilot vessel less than 50 meters, underway and NOT engaged on pilotage duty
    N b. vessel engaged in fishing
    N c. vessel aground less than 50 meters
    N d. vessel engaged in dredging at anchor with an obstruction on one side

4610: BOTH INTERNATIONAL & INLAND You are aboard the give-way vessel in a crossing situation. What should you NOT do in obeying the Rules?

    Y a. Cross ahead of the stand-on vessel
    N b. Make a large course change to starboard
    N c. Slow your vessel
    N d. Back your vessel

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

4716: BOTH INTERNATIONAL & INLAND Which day-shape should a vessel being towed exhibit if the tow EXCEEDS 200 meters?

    N a. A cone, apex downward
    N b. A cone, apex upward
    Y c. A diamond
    N d. A ball

4725: BOTH INTERNATIONAL & INLAND What is the minimum sound signaling equipment required aboard a vessel 24 meters in length?

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

4770: BOTH INTERNATIONAL & INLAND While underway in fog, you hear a vessel ahead sound two prolonged blasts on the whistle. You should __________.

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

8048: 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. one short blast
    N b. two prolonged blasts
    N c. two prolonged followed by two short blasts
    Y d. one prolonged, one short, one prolonged, and one short blast in that order