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.


19: INLAND ONLY A power-driven vessel operating in a narrow channel with a following current on the Great Lakes or Western Rivers is meeting an upbound vessel. Which statement is TRUE?


86: INLAND ONLY What is the whistle signal used to indicate a power-driven vessel leaving a dock?


96: INLAND ONLY You are approaching a sharp bend in a river. You have sounded a prolonged blast and it has been answered by a vessel on the other side of the bend. Which statement is TRUE?


105: 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 and leave her on your starboard side. Your FIRST whistle signal should be __________.

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

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

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

    Y a. diamond shape regardless of length of the tow
    N b. diamond shape only when the length of the tow exceeds 200 meters in length
    N c. black ball
    N d. black ball only when the length of the tow exceeds 200 meters in length

229: BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown. Vessel "A" is the __________. (DIAGRAM 17 )

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

233: BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown. and will pass without changing course. Vessel "B" is an air-cushion vessel operating in the nondisplacement mode. Which light will vessel "A" observe from vessel "B"? (DIAGRAM 17 )

    N a. Green light
    N b. flashing red light
    Y c. flashing yellow light
    N d. flashing white light

312: INLAND ONLY You see the lights shown while proceeding in a channel. What should you do? (DIAGRAM 85 )

    N a. Proceed at full see speed through the two sets of double red lights.
    N b. Stop the vessel and await the red lights to change to green.
    Y c. Slow down and pass between the two sets of double red lights.
    N d. None of the above

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

    N a. white masthead light
    N b. red sidelight
    N c. stern light
    Y d. None of the above

352: INLAND ONLY A commercial vessel engaged in public safety activities may display a(n) __________.

    N a. flashing blue light
    Y b. alternately flashing red and yellow light
    N c. flashing yellow light
    N d. alternately flashing blue and red light

364: 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 )

    N a. burdened vessel
    N b. give-way vessel
    Y c. stand-on vessel
    N d. overtaking vessel

394: BOTH INTERNATIONAL & INLAND You see ONLY the light shown. This could be a __________. (DIAGRAM 80 )

    N a. law enforcement vessel
    N b. vessel on pilotage duty
    Y c. sailing vessel
    N d. power-driven vessel

4006: BOTH INTERNATIONAL & INLAND Your vessel is approaching a bend. You hear a prolonged blast from around the bend. You should __________.

    N a. back your engines
    N b. stop your engines and drift
    Y c. answer with one prolonged blast
    N d. sound the danger signal

4007: BOTH INTERNATIONAL & INLAND If you do NOT understand the course or intention of an approaching vessel you should sound __________.

    N a. one short blast
    N b. one prolonged blast
    Y c. not less than five short blasts
    N d. not less than five prolonged blasts

4032: BOTH INTERNATIONAL & INLAND Which vessel may combine her sidelights and stern light in one lantern on the fore and aft centerline of the vessel?

    Y a. A 16-meter sailing vessel
    N b. A 25-meter power-driven vessel
    N c. A 28-meter sailing vessel
    N d. Any non-self-propelled vessel

4218: BOTH INTERNATIONAL & INLAND A vessel displaying the day signal shown is __________. (DIAGRAM 7 )

    Y a. not under command
    N b. a dredge underway and dredging
    N c. fishing
    N d. a hydrographic survey vessel underway

4266: BOTH INTERNATIONAL & INLAND On open waters, a power-driven vessel shall keep out of the way of a __________.

    N a. vessel on her port side that is crossing her course
    N b. vessel that is overtaking her
    N c. seaplane on the water
    Y d. sailing vessel

4268: BOTH INTERNATIONAL & INLAND Your vessel is at anchor in fog. The fog signal of another vessel, apparently underway, has been growing louder and the danger of collision appears to exist. In addition to your fog signal, what signal may be used to indicate your presence?

    N a. No signal other than your fog signal may be used.
    N b. One prolonged, one short, and one prolonged whistle blast
    N c. One prolonged followed by two short whistle blasts
    Y d. One short, one prolonged, and one short whistle blast

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

4381: BOTH INTERNATIONAL & INLAND A vessel that is defined as "restricted in her ability to maneuver" is unable to keep out of the way of another vessel due to __________.

    N a. her draft
    Y b. the nature of her work
    N c. some exceptional circumstances
    N d. a danger of navigation

4401: BOTH INTERNATIONAL & INLAND You are underway in heavy fog. You hear the fog signal of a vessel which is somewhere ahead of your vessel. You must __________.

    N a. slow to moderate speed and navigate with caution
    N b. maintain speed and sound the danger signal
    N c. stop engines and navigate with caution
    Y d. slow to bare steerageway and navigate with caution

4409: BOTH INTERNATIONAL & INLAND A vessel or object being towed astern shall display a(n) __________.

    N a. forward masthead light
    N b. after masthead light
    Y c. stern light
    N d. All of the above

4549: BOTH INTERNATIONAL & INLAND Two sailing vessels are approaching each other as shown. Which statement is correct? (DIAGRAM 3 )

    N a. Vessel "I" should stand on because she has the wind on her port side.
    Y b. Vessel "II" should stand on because she has the wind on her starboard side.
    N c. Neither vessel is the stand-on vessel because they are meeting head-on.
    N d. Vessel "I" should stand on because she is close-hauled.

4562: BOTH INTERNATIONAL & INLAND In a crossing situation, the vessel which has the other on her own starboard side shall __________.

    Y a. if the circumstances of the case admit, avoid crossing ahead of the other
    N b. change course to port to keep out of the way
    N c. reduce her speed
    N d. All of the above

4624: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown could be a vessel __________. (DIAGRAM 56 )

    N a. towing a barge alongside
    Y b. underway and laying cable
    N c. at anchor and dredging
    N d. underway and carrying dangerous cargo

4832: BOTH INTERNATIONAL & INLAND A vessel is "in sight" of another vessel when she __________.

    N a. can be observed by radar
    N b. has determined that risk of collision exists
    N c. is sounding a fog signal which can be heard on the other vessel
    Y d. can be observed visually from the other vessel

4861: BOTH INTERNATIONAL & INLAND When navigating in thick fog with the radar on, you should __________.

    N a. station the look-out in the wheelhouse to keep a continuous watch on the radar
    N b. secure the sounding of fog signals until a vessel closes within five miles
    Y c. station a look-out as low down and far forward as possible
    N d. keep the radar on the shortest available range for early detection of approaching vessels

4870: BOTH INTERNATIONAL & INLAND When do the Rules require both vessels to change course?

    N a. Any time the danger signal is sounded
    N b. When two power-driven vessels are crossing and it is apparent to the stand-on vessel that the give-way vessel is not taking appropriate action
    Y c. When two power-driven vessels are meeting head-on
    N d. All of the above

8043: INTERNATIONAL ONLY Which vessel would NOT sound a fog signal of one prolonged and two short blasts?

    N a. A vessel not under command
    N b. A vessel constrained by her draft
    Y c. A vessel being towed
    N d. A vessel sailing