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.


7: INLAND ONLY When power-driven vessels are crossing, a signal of one short blast by either vessel means __________.


35: INLAND ONLY You are on vessel "B" and vessel "A" desires to overtake you on your starboard side as shown. After the vessels have exchanged one blast signals, you should __________. (DIAGRAM 9 )


42: INLAND ONLY You are underway in a narrow channel, and are being overtaken by another power-driven vessel. The overtaking vessel sounds the signal indicating his intention to pass you on your starboard side. You signal your agreement by sounding __________.


63: INLAND ONLY A vessel of less than 20 meters in length at anchor at night in a "special anchorage area designated by the Secretary" __________.

    N a. must show one white light
    Y b. need not show any lights
    N c. must show two white lights
    N d. need show a light only on the approach of another vessel

92: INLAND ONLY A power-driven vessel pushing ahead or towing alongside on the Mississippi River, below the Huey P. Long Bridge, shall carry __________.

    N a. two masthead lights, sidelights and stern light
    Y b. two masthead lights, sidelights and two towing lights
    N c. sidelights and two towing lights
    N d. one masthead light, sidelights and stern light

116: BOTH INTERNATIONAL & INLAND You are on a 30-meter fishing vessel. Which day shape must you show while engaged in fishing? (DIAGRAM 16 )

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

125: INLAND ONLY Under the Inland Navigation Rules, the term "Inland Waters" includes __________.

    N a. any waters marked by U.S. aids to navigation
    N b. harbors and rivers to the outermost aids to navigation
    N c. waters along the coast of the United States to a distance of two miles offshore
    Y d. the Western Rivers, extending to the COLREGS demarcation line

161: BOTH INTERNATIONAL & INLAND You are on a vessel heading due south and see the lights shown one point on the port bow. This vessel could be heading __________. (DIAGRAM 51 )

    Y a. NW
    N b. SW
    N c. NE
    N d. SE

170: BOTH INTERNATIONAL & INLAND You are on a vessel and see ahead the lights shown. They indicate a __________. (DIAGRAM 59 )

    N a. vessel crossing from your starboard
    Y b. vessel crossing from your port
    N c. vessel being overtaken
    N d. vessel meeting head-on

187: BOTH INTERNATIONAL & INLAND You are in charge of a power-driven vessel making way in dense fog. You observe what appears to be another vessel on radar half a mile distant on your port bow and closing. You must __________.

    N a. sound the danger signal
    N b. exchange passing signals
    Y c. sound one prolonged blast
    N d. sound one short, one prolonged, and one short blast

222: INLAND ONLY A barge more than 50 meters long, at anchor in a "special anchorage area designated by the Secretary", is required to show how many white anchor lights?

    N a. 1
    N b. 3
    N c. None
    Y d. 2

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

    N a. should change course to the right
    N b. should slow down until vessel "A" has passed
    Y c. should hold her course and speed
    N d. may steer various courses and vessel "A" must keep clear

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

    N a. should change course to the right
    N b. should slow down until vessel "A" has passed
    Y c. should hold her course and speed
    N d. may steer various courses and vessel "A" must keep clear

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

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

4121: BOTH INTERNATIONAL & INLAND A sailing vessel is NOT required to keep out of the way of a __________.

    Y a. power-driven vessel
    N b. vessel not under command
    N c. vessel restricted in her ability to maneuver
    N d. vessel engaged in fishing

4223: BOTH INTERNATIONAL & INLAND Which vessel may show three lights in a vertical line, the top and bottom being red and the middle being white?

    Y a. A vessel engaged in diving operations
    N b. A pilot vessel
    N c. A vessel trawling
    N d. All of the above

4255: BOTH INTERNATIONAL & INLAND A stand-on vessel in a crossing situation is allowed to take action when __________.

    N a. on a collision course
    N b. the vessels will pass within one mile
    Y c. it becomes apparent to her that the give-way vessel is not taking appropriate action
    N d. the relative speed of the vessels indicates collision in less than six minutes

4393: BOTH INTERNATIONAL & INLAND Which light(s) is(are) AMONG those shown by a 200-meter vessel at anchor?

    N a. In the forepart of the vessel, a 225° white light
    N b. In the after part of the vessel, a 135° white light
    Y c. Any available working lights to illuminate the decks
    N d. In the fore part of the vessel, a 135° white light

4520: BOTH INTERNATIONAL & INLAND When anchoring a 20-meter vessel at night, you must show __________.

    Y a. one all-round white light
    N b. two all-round white lights
    N c. one all-round white light and the stern light
    N d. one all-round white light and a flare up light

4542: BOTH INTERNATIONAL & INLAND A vessel is towing and carrying the required lights on the masthead. What is the visibility arc of these lights?

    N a. 112.5°
    N b. 135.0°
    Y c. 225.0°
    N d. 360.0°

4577: BOTH INTERNATIONAL & INLAND Which statement about the Navigation Rules is TRUE?

    N a. The rules require vessels to comply with Traffic Separation Scheme regulations.
    N b. The rules use the term "safe speed."
    N c. The Rules permit a stand-on vessel to take action prior to being in extremis.
    Y d. All of the above are correct.

4589: BOTH INTERNATIONAL & INLAND You are operating in restricted visibility and hear a signal of a rapidly ringing bell followed by the rapid sounding of a gong. It could be a __________.

    N a. 30-meter sail vessel at anchor
    N b. 150-meter power-driven vessel aground
    N c. vessel in distress
    Y d. 300-meter power-driven vessel at anchor

4615: BOTH INTERNATIONAL & INLAND A pilot vessel may continue to sound an identity signal if she is __________.

    Y a. underway, but not making way
    N b. aground
    N c. being towed
    N d. not engaged in pilotage duty

4619: BOTH INTERNATIONAL & INLAND Which vessel is NOT to impede the passage of a vessel which can only navigate safely within a narrow channel?

    N a. Any vessel less than 20 meters in length
    N b. Any sailing vessel
    N c. A vessel engaged in fishing
    Y d. All of the above

4718: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown could be a vessel __________. (DIAGRAM 56 )

    N a. fishing at anchor
    Y b. dredging while underway
    N c. transferring dangerous cargo at a berth
    N d. restricted in her ability to maneuver, underway but not making way

4837: BOTH INTERNATIONAL & INLAND A vessel "restricted in her ability to maneuver" is one which __________.

    N a. through some exceptional circumstance is unable to maneuver as required by the Rules
    Y b. from the nature of her work is unable to maneuver as required by the Rules
    N c. due to adverse weather conditions is unable to maneuver as required by the Rules
    N d. has lost steering and is unable to maneuver

4868: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning two sailing vessels approaching each other?

    N a. The vessel making the most speed is the give-way vessel.
    Y b. A sailing vessel overtaking another is the give-way vessel.
    N c. A sailing vessel seeing another to leeward on an undetermined tack shall hold her course.
    N d. All of the above

8005: INTERNATIONAL ONLY You are in charge of a 250-meter freight vessel constrained by her draft proceeding down a narrow channel. There is a vessel engaged in fishing on your starboard bow half a mile away. According to Rule 9, which statement is TRUE?

    N a. You are not to impede the fishing vessel.
    Y b. If you are in doubt as to the fishing vessel's intentions you may sound at least five short and rapid blasts on the whistle.
    N c. You are to slow to bare steerageway until clear of the fishing vessel.
    N d. You must sound one prolonged blast to alert the fishing vessel.

8073: INTERNATIONAL ONLY In a narrow channel, an overtaking vessel which intends to PASS on the other vessel's port side would sound __________.

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