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.


3: INLAND ONLY In a narrow channel, you are underway on vessel "A" and desire to overtake vessel "B". After you sound two short blasts on your whistle, vessel "B" sounds five short and rapid blasts on the whistle. You should __________.


51: INLAND ONLY Which statement is TRUE concerning the Inland Navigation Rules?


130: INLAND ONLY Your vessel must stay within a narrow channel to be navigated safely. Another vessel is crossing your course from starboard to port. You do NOT think she will pass safely. You are required to __________.


135: BOTH INTERNATIONAL & INLAND You are on a 30-meter trawler. Which day signal must you show while trawling? (DIAGRAM 16 )

    N a. A
    N b. B
    Y c. C
    N d. None of these day signals are correct.

159: BOTH INTERNATIONAL & INLAND The lights shown are exhibited by a vessel __________. (DIAGRAM 49 )

    N a. submarine on the surface
    N b. air-cushion vessel in the non-displacement mode
    N c. vessel engaged in trawling
    Y d. vessel not under command

179: BOTH INTERNATIONAL & INLAND Which display of lights shown indicates a dredge underway and not dredging? (DIAGRAM 72 )

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

216: INLAND ONLY Signals shall be sounded by a power-driven vessel intending to overtake __________.

    N a. any vessel when within half a mile of that vessel
    Y b. another power-driven vessel when both power-driven vessels are in sight of one another
    N c. any vessel when both are in sight of one another
    N d. another power-driven vessel only when within half a mile of that power-driven vessel

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

311: INLAND ONLY Identify the operation indicated by the lights exhibited as shown. (DIAGRAM 85 )

    N a. Aircraft carrier engaged in the launching and recovery of aircraft
    N b. A submarine engaged in underway replenishment
    N c. A vessel aground assisted by tugs
    Y d. None of the above

339: 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. two short blasts
    Y c. one short blast
    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

402: BOTH INTERNATIONAL & INLAND While underway in fog, you hear a prolonged blast from another vessel. This signal indicates a __________.

    N a. sailboat making way
    N b. power-driven vessel making way, towing
    Y c. power-driven vessel making way
    N d. vessel being towed

4134: BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown. Which vessel is the stand-on vessel? (DIAGRAM 9 )

    N a. Vessel "A"
    Y b. Vessel "B"
    N c. Neither vessel
    N d. Both vessels must keep clear of the other.

4186: BOTH INTERNATIONAL & INLAND A vessel fishing should display which of the day signals shown. (DIAGRAM 1 )

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

4205: BOTH INTERNATIONAL & INLAND A towing vessel is towing two barges astern. The length of the tow from the stern of the tug to the stern of the last barge is 250 meters. The towing vessel is 45 meters in length. How many white masthead lights should be displayed on the tugboat at night?

    N a. 1
    N b. 2
    Y c. 3
    N d. 4

4227: BOTH INTERNATIONAL & INLAND An orange flag showing a black circle and square is a __________.

    N a. signal indicating a course change
    Y b. distress signal
    N c. signal of asking to communicate with another vessel
    N d. signal indicating danger

4230: BOTH INTERNATIONAL & INLAND In restricted visibility, a vessel restricted in her ability to maneuver, at anchor, would sound a fog signal of __________.

    N a. the rapid ringing of a bell for five seconds every minute
    N b. two prolonged and two short blasts every two minutes
    Y c. one prolonged and two short blasts every two minutes
    N d. two prolonged and one short blast every two minutes

4253: BOTH INTERNATIONAL & INLAND A pilot vessel on pilotage duty shall show identity lights __________.

    N a. at any time while underway
    N b. while at anchor
    N c. while alongside a vessel
    Y d. All of the above

4344: BOTH INTERNATIONAL & INLAND "safe speed" is defined as that speed where __________.

    N a. you can stop within your visibility range
    Y b. you can take proper and effective action to avoid collision
    N c. you are traveling slower than surrounding vessels
    N d. no wake comes from your vessel

4402: BOTH INTERNATIONAL & INLAND A vessel at anchor will show a __________.

    Y a. ball
    N b. cone
    N c. cylinder
    N d. double cone, apexes together

4537: BOTH INTERNATIONAL & INLAND Vessel "A" is on course 000°T. Vessel "B" is on a course such that she is involved in a head-on situation and is bearing 355°T, 2 miles away from vessel "A". To ensure a safe passing, vessel "A" should __________.

    N a. maintain course
    N b. alter course to port
    N c. alter course to ensure a starboard to starboard passing
    Y d. maneuver to ensure a port to port passing

4651: BOTH INTERNATIONAL & INLAND Which vessel is the stand-on vessel when two vessels crossing in fog are NOT in sight of one another?

    N a. The vessel which has the other on her own starboard side
    N b. The vessel which has the other on her own port side
    N c. The one which hears the other's fog signal first
    Y d. Neither vessel is the stand-on vessel.

4715: BOTH INTERNATIONAL & INLAND What is a "vessel restricted in her ability to maneuver"?

    N a. A deep-draft vessel that can only navigate in a dredged channel
    N b. A vessel fishing with a bottom trawl that must remain on course
    N c. A large tanker that is being towed as a dead ship to dry dock
    Y d. A vessel laying revetment mats to provide bank protection along a channel

4876: BOTH INTERNATIONAL & INLAND You are approaching a narrow channel. Another vessel in the channel can only be navigated safely in that channel. You should __________.

    N a. sound two prolonged blasts followed by one short blast
    Y b. not cross the channel if you might impede the other vessel
    N c. sound three short blasts, and take all way off your vessel
    N d. hold your course and speed if he is on your port bow

8009: INTERNATIONAL ONLY You are underway on the high seas in restricted visibility. You hear a fog signal of one prolonged and two short blasts. It could be any of the following EXCEPT a vessel __________.

    N a. minesweeping
    N b. engaged in fishing
    N c. constrained by her draft
    Y d. being towed

8010: INTERNATIONAL ONLY A vessel displaying three red lights in a vertical line is __________.

    N a. not under command
    N b. aground
    N c. dredging
    Y d. constrained by her draft

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

8081: INTERNATIONAL ONLY The light which may be used with a vessel's whistle must be __________.

    N a. used when the whistle is broken
    Y b. a white light
    N c. used only at night
    N d. used prior to sounding the whistle

8102: INTERNATIONAL ONLY Which statement is TRUE concerning a vessel "constrained by her draft"?

    N a. She is hampered because of her work.
    N b. She is unable to maneuver due to some exceptional circumstance.
    N c. She may be a vessel being towed.
    Y d. She must be a power-driven vessel.

8113: INTERNATIONAL ONLY You are approaching another vessel and will pass safely starboard to starboard without changing course. You should __________.

    Y a. hold course and sound no whistle signal
    N b. hold course and sound a two blast whistle signal
    N c. change course to starboard and sound one blast
    N d. hold course and sound one blast