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.


21: INLAND ONLY The stand-on vessel in a crossing situation sounds one short blast of the whistle. This means that the vessel __________.


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


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


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

85: INLAND ONLY A power-driven vessel crossing a river on the Great Lakes or Western Rivers, must keep out of the way of a power-driven vessel __________.

    N a. descending the river with a tow
    N b. ascending the river with a tow
    N c. ascending the river without a tow
    Y d. All of the above

89: 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 __________.

    N a. may sound the danger signal
    Y b. must sound the danger signal
    N c. should sound one short blast to indicate that you are holding course and speed
    N d. are required to back down

133: 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?

    Y a. The downbound vessel has the right of way.
    N b. The upbound vessel must initiate the required maneuvering signals.
    N c. The upbound vessel must propose the manner of passing.
    N d. All of the above

137: INLAND ONLY A vessel displaying an alternating red and yellow light is __________.

    N a. in distress
    N b. enforcing the law
    Y c. engaged in public safety activities
    N d. restricted in its ability to maneuver

156: BOTH INTERNATIONAL & INLAND You are underway at night and you sight the lights shown. You know these lights indicate a(n) _________________________ (DIAGRAM 47 )

    N a. vessel towing astern
    Y b. sailing vessel
    N c. submarine operating on the surface
    N d. vessel pushing a barge ahead

284: INLAND ONLY While underway you sight the lights shown with the yellow lights flashing. The lights displayed are from a __________. (DIAGRAM 81 )

    N a. vessel aground
    N b. mine clearance vessel
    N c. vessel not under command
    Y d. dredge pipeline

383: INLAND ONLY You are meeting "head on" a tug towing a barge alongside about a mile away. In addition to the white masthead lights which other lights do you see on the tug and tow combined?

    N a. One green and one red sidelight on the outside of the unit
    N b. One green and one red sidelight and a special flashing light
    N c. Only the green and red sidelights marking each vessel
    Y d. The green and red sidelights marking each vessel and a special flashing light

401: INLAND ONLY Two power-driven vessels are meeting in the situation as shown in a narrow channel on the Great Lakes. Vessel "A" is downbound with a following current. Vessel "B" should __________. (DIAGRAM 37 )

    Y a. take action to permit safe passage
    N b. have the right of way
    N c. initiate the maneuvering signals
    N d. None of the above

4008: BOTH INTERNATIONAL & INLAND If you are the stand-on vessel in a crossing situation, you may take action to avoid collision by your maneuver alone. When may this action be taken?

    N a. At any time you feel it is appropriate
    N b. Only when you have reached extremis
    N c. When you determine that your present course will cross ahead of the other vessel
    Y d. When it becomes apparent to you that the give-way vessel is not taking appropriate action

4119: BOTH INTERNATIONAL & INLAND A lantern combining a vessel's navigation lights may be shown on a __________.

    Y a. 15-meter sailing vessel
    N b. 20-meter vessel engaged in fishing and making way
    N c. 25-meter power-driven vessel trolling
    N d. 25-meter pilot vessel

4257: BOTH INTERNATIONAL & INLAND Which vessel is required to sound a fog signal of one prolonged followed by two short blasts?

    N a. A vessel not under command
    N b. A sailing vessel, underway
    N c. A vessel restricted in its ability to maneuver, at anchor
    Y d. All of the above

4353: BOTH INTERNATIONAL & INLAND Every vessel that is to keep out of the way of another vessel must take positive early action to comply with this obligation and must __________.

    Y a. avoid crossing ahead of the other vessel
    N b. avoid passing astern of the other vessel
    N c. sound one prolonged blast to indicate compliance
    N d. alter course to port for a vessel on her port side

4455: BOTH INTERNATIONAL & INLAND Which vessel is "underway" within the meaning of the Rules?

    N a. A vessel at anchor with the engine turning
    N b. A vessel tied to an offshore mooring buoy
    N c. A vessel aground with the engine turning
    Y d. A vessel drifting with the engine stopped

4461: BOTH INTERNATIONAL & INLAND During the day, a vessel with a tow over 200 meters in length will show __________.

    N a. a black ball
    Y b. a diamond shape
    N c. two cones, apexes together
    N d. one cone, apex upward

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.

4506: BOTH INTERNATIONAL & INLAND A lantern combining the sidelights and stern light MAY be shown on a __________.

    N a. sailing vessel of 25 meters in length
    N b. 20-meter vessel engaged in fishing and making way
    N c. 25-meter power-driven vessel engaged in trolling
    Y d. 6-meter vessel under oars

4530: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning a partly submerged vessel being towed?

    N a. It must show a yellow light at each end.
    N b. It will show red lights along its length.
    Y c. A diamond shape will be carried at the aftermost extremity of the tow.
    N d. All of the above

4590: BOTH INTERNATIONAL & INLAND A vessel being towed, if manned, shall sound a fog signal of __________.

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

4626: BOTH INTERNATIONAL & INLAND A vessel being towed astern, where the length of the tow exceeds 200 meters, will exhibit __________.

    N a. two balls in a vertical line
    Y b. a diamond shape where it can best be seen
    N c. a ball on each end of the tow
    N d. no day-shape

4709: BOTH INTERNATIONAL & INLAND At night, a vessel displaying the lights shown is __________. (DIAGRAM 52 )

    N a. aground
    Y b. underway
    N c. at anchor
    N d. transferring dangerous cargo

4839: BOTH INTERNATIONAL & INLAND A vessel is considered to be "restricted in her ability to maneuver" under the Rules if she is __________.

    N a. at anchor
    Y b. mineclearing
    N c. engaged in fishing
    N d. engaged in towing

4873: BOTH INTERNATIONAL & INLAND In a crossing situation on open waters, a sailing vessel shall keep out of the way of all the following vessels EXCEPT a vessel __________.

    N a. not under command
    N b. restricted in her ability to maneuver
    Y c. engaged in towing
    N d. fishing

8000: INTERNATIONAL ONLY To indicate that a vessel is constrained by her draft, a vessel may display, in a vertical line, __________.

    Y a. three 360 red lights
    N b. two 225 red lights
    N c. three 360 blue lights
    N d. two 225 blue lights

8013: INTERNATIONAL ONLY When two vessels are in sight of one another, all of the following signals may be given EXCEPT __________.

    N a. a light signal of at least five short and rapid flashes
    Y b. four short whistle blasts
    N c. one prolonged, one short, one prolonged and one short whistle blasts
    N d. two short whistle blasts

8026: INTERNATIONAL ONLY You are in sight of another vessel in a crossing situation, and the other vessel sounds one short blast. You are going to hold course and speed. You should __________.

    N a. answer with one short blast
    N b. answer with two short blasts
    N c. sound the danger signal
    Y d. sound no whistle signal

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