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?


26: INLAND ONLY A law enforcement boat may display a __________.


61: INLAND ONLY Your power-driven vessel is overtaking another power-driven vessel in a narrow channel. You wish to overtake her on her starboard side. You should sound a whistle signal of __________.


81: INLAND ONLY When two power-driven vessels are meeting on the Great Lakes, Western Rivers, or waters specified by the Secretary, where there is a current, which vessel shall sound the first passing signal?

    N a. The vessel going upstream stemming the current
    Y b. The vessel downbound with a following current
    N c. The vessel that is towing regardless of the current
    N d. Either vessel

84: INLAND ONLY You are in charge of a power-driven vessel crossing a river on the Western Rivers. You must keep out of the way of a __________.

    N a. sail vessel descending the river
    N b. power-driven vessel ascending the river
    N c. sail vessel ascending the river
    Y d. All of the above

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?

    Y a. Both vessels must exchange passing signals when in sight and passing within one-half mile of each other.
    N b. No further whistle signals are necessary.
    N c. The vessel downriver must stop her engines and navigate with caution.
    N d. Both vessels must immediately sound passing signals whether or not they are in sight of each other.

185: BOTH INTERNATIONAL & INLAND You see the display of lights shown. It could be a __________. (DIAGRAM 54 )

    N a. pilot vessel with a motor launch alongside
    N b. fishing vessel adrift and fishing with handlines
    N c. fishing vessel at anchor
    Y d. fishing vessel with outlying gear more than 150 meters

189: BOTH INTERNATIONAL & INLAND You are on vessel "A" towing a barge alongside and meeting vessel "B" as shown. Which action should you take? (DIAGRAM 39 )

    N a. Alter course to port
    Y b. Alter course to starboard
    N c. Back down to reduce the strain on the lines
    N d. Maintain course and speed

277: INLAND ONLY While underway you sight the lights shown with the yellow lights flashing. The lights displayed should be __________. (DIAGRAM 81 )

    Y a. visible at night and during periods of restricted visibility
    N b. visible for at least one mile
    N c. more than 50 meters apart
    N d. flashing at intervals of 120 flashes per minute

299: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown is a(n) __________. (DIAGRAM 79 )

    Y a. vessel towing astern
    N b. vessel restricted in her ability to maneuver
    N c. vessel not under command
    N d. vessel aground

313: INLAND ONLY You see the lights shown while proceeding in a channel. Where should you pass? (DIAGRAM 85 )

    Y a. A
    N b. B
    N c. C
    N d. D

320: BOTH INTERNATIONAL & INLAND Which dayshape(s) would be displayed by the vessel engaged in the operation indicated by the lights shown. (DIAGRAM 82 )

    N a. a cylinder
    N b. a ball, a diamond and another ball
    Y c. two cones with apexes together
    N d. a diamond

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

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

    Y a. sailing vessel
    N b. vessel on pilotage duty
    N c. vessel engaged in fishing
    N d. power-driven vessel

4078: BOTH INTERNATIONAL & INLAND You are making headway in fog and hear a fog signal of two prolonged blasts on your starboard quarter. You should __________.

    N a. stop your vessel
    N b. change course to the left
    N c. change course to the right
    Y d. hold your course and speed

4091: BOTH INTERNATIONAL & INLAND An authorized light to assist in the identification of submarines operating on the surface is a(n) __________.

    N a. blue rotating light
    Y b. intermittent flashing amber/yellow light
    N c. flashing white light
    N d. flashing sidelight

4095: BOTH INTERNATIONAL & INLAND When underway in a channel, you should keep to the __________.

    N a. middle of the channel
    Y b. starboard side of the channel
    N c. port side of the channel
    N d. side of the channel that has the widest turns

4096: BOTH INTERNATIONAL & INLAND While underway, in fog, you hear a whistle signal of one prolonged blast followed by two short blasts. This signal is sounded by a vessel __________.

    Y a. not under command
    N b. being towed
    N c. on pilotage duty
    N d. aground

4211: BOTH INTERNATIONAL & INLAND In order for a stand-on vessel to take action in a situation, she must determine that the other vessel __________.

    N a. is restricted in her ability to maneuver
    N b. has sounded the danger signal
    Y c. is not taking appropriate action
    N d. has not changed course since risk of collision was determined

4265: BOTH INTERNATIONAL & INLAND While underway and pushing a barge ahead, your vessel enters a heavy rain storm. You should sound __________.

    N a. a prolonged blast every two minutes
    N b. two prolonged blasts every two minutes
    Y c. one prolonged and two short blasts every two minutes
    N d. one prolonged and three short blasts every two minutes

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

4363: BOTH INTERNATIONAL & INLAND A vessel displaying the day shape shown is __________. (DIAGRAM 10 )

    N a. broken down
    N b. anchored
    Y c. towing
    N d. fishing

4406: BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown. Vessel "A" sounds three short blasts on the whistle. This signal means that vessel "A" __________. (DIAGRAM 42 )

    N a. intends to hold course and speed
    N b. is sounding the danger signal
    Y c. is backing engines
    N d. proposes to cross ahead of the other vessel

4493: BOTH INTERNATIONAL & INLAND You are underway in fog and hear one short, one prolonged, and one short blast in succession. What is the meaning of this signal?

    N a. A vessel is in distress and needs assistance.
    N b. A vessel is fishing, hauling nets.
    Y c. A vessel is at anchor, warning of her position.
    N d. A vessel is towing.

4578: BOTH INTERNATIONAL & INLAND A "short blast" on the whistle has a duration of __________.

    Y a. 1 second
    N b. 4 to 6 seconds
    N c. 8 to 12 seconds
    N d. 12 to 15 seconds

4579: BOTH INTERNATIONAL & INLAND As defined in the Rules, the term "vessel" includes __________.

    N a. seaplanes
    N b. nondisplacement craft
    N c. barges
    Y d. All of the above

4820: BOTH INTERNATIONAL & INLAND You are about to cross a narrow channel when you see an approaching vessel that can only be navigated safely within the channel. You should __________.

    N a. cross the channel as you are the stand-on vessel
    N b. cross only if the vessel in the channel is approaching on your port side
    Y c. not cross the channel if you might impede the other vessel
    N d. sound the danger signal

5500: BOTH INTERNATIONAL & INLAND A vessel using a traffic separation scheme shall __________.

    N a. only anchor in the separation zone
    N b. avoid crossing traffic lanes, but if obliged to do so, shall cross on a heading at as small an angle as is practical
    Y c. avoid anchoring in areas near the termination of the scheme
    N d. use the separation zone for navigation through the scheme if she is hindering other traffic due to her slower speed

8062: INTERNATIONAL ONLY If you sighted three red lights in a vertical line on another vessel at night, it would be a vessel __________.

    N a. aground
    Y b. constrained by her draft
    N c. dredging
    N d. moored over a wreck

8114: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning a situation involving a fishing vessel and a vessel not under command?

    N a. They are required to communicate by radiotelephone.
    N b. If the vessel not under command is a power-driven vessel, she must keep clear of the fishing vessel.
    Y c. The fishing vessel must keep out of the way of the vessel not under command.
    N d. Both vessels are required to take action to stay clear of each other.