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.


23: INLAND ONLY Passing signals shall be sounded on inland waters by __________.


65: INLAND ONLY A power-driven vessel intends to overtake another power-driven vessel on the overtaken vessel's port side. Which whistle signal should be sounded in order to state this intention?


71: INLAND ONLY Which is TRUE of a power-driven vessel, bound downstream, when meeting an upbound vessel on the Western Rivers?


78: INLAND ONLY Under the Inland Navigation Rules, what is the meaning of a one short blast signal used when meeting another vessel?

    N a. "I am turning to starboard."
    N b. "I am turning to port."
    N c. "I intend to leave you on my starboard side."
    Y d. "I intend to leave you on my port side."

83: INLAND ONLY If your tug is pushing a barge ahead at night and it is not a composite unit, which light(s) should show aft on your vessel?

    N a. A white stern light
    N b. Two red lights
    Y c. Two towing lights
    N d. A towing light over the stern light

226: INLAND ONLY While underway and in sight of another vessel a mile ahead you put your engines on astern propulsion. Which statement concerning whistle signals is TRUE?

    N a. You must sound three short blasts on the whistle.
    N b. You must sound one blast if backing to starboard.
    N c. You must sound whistle signals only if the vessels are meeting.
    Y d. You need not sound any whistle signals.

228: INLAND ONLY A vessel engaged in public safety activities may display an alternately flashing red and yellow light. This special light may be used by a vessel engaged in __________.

    N a. law enforcement
    Y b. patrolling a regatta
    N c. hauling in pairs
    N d. river bank protection

243: INTERNATIONAL ONLY You are on vessel "A" as shown. Vessel "B" sounds two short blasts. You should __________. (DIAGRAM 32 )

    N a. sound two prolonged blasts followed by two short blasts
    Y b. not answer the whistle signal from vessel "B"
    N c. sound two short blasts and maintain course and speed
    N d. sound one prolonged, one short, one prolonged and one short blasts

252: INTERNATIONAL ONLY Vessels "A" and "B" are meeting on a river as shown and will pass 1/4 mile apart. Which action should the vessels take? (DIAGRAM 41 )

    Y a. The vessels should continue on course and pass without sounding any whistle signals.
    N b. The vessels should exchange two blast whistle signals and pass starboard to starboard.
    N c. The vessels should exchange one blast whistle signals and pass starboard to starboard.
    N d. The vessel with the tow should initiate the whistle signals.

260: INLAND ONLY A vessel engaged in public safety activities may display an alternately flashing red and yellow light. This special light may be used by a vessel engaged in __________.

    Y a. search and rescue
    N b. restricted in ability to maneuver
    N c. not under command
    N d. river bank protection

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

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

372: INLAND ONLY You are on vessel "A" as shown and hear vessel "B" sound a signal indicating his intentions to overtake you. You feel it is not safe for vessel "B" to overtake you at the present time. You should __________. (DIAGRAM 32 )

    N a. sound two short blasts
    N b. sound one prolonged followed by three short blasts
    N c. not answer the whistle signal from vessel "B"
    Y d. None of the above

4089: BOTH INTERNATIONAL & INLAND A vessel engaged in mineclearing shows special identity lights __________.

    N a. in addition to the lights required for a power-driven vessel
    N b. which mean that other vessels should not approach within 1000 meters of the mineclearing vessel
    N c. which are green and show all-round
    Y d. All of the above

4197: BOTH INTERNATIONAL & INLAND A vessel which is unable to maneuver due to some exceptional circumstance, shall show two red lights in a vertical line and __________.

    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, sidelights and a stern light
    N d. when making way at night, masthead lights, sidelights, and a stern light

4212: BOTH INTERNATIONAL & INLAND While underway your vessel approaches a bend in a river where, due to the bank, you cannot see around the bend. You should __________.

    N a. keep to the starboard side of the channel and sound one short blast
    N b. sound the danger signal
    Y c. sound one prolonged blast
    N d. slow your vessel to bare steerageway

4258: BOTH INTERNATIONAL & INLAND At night, a broken down vessel being towed would show the same lights as __________.

    N a. a power-driven vessel underway
    N b. the towing vessel
    Y c. a barge
    N d. a vessel at anchor

4290: BOTH INTERNATIONAL & INLAND While underway in a fog you hear a signal of three strokes of a bell, a rapid ringing of the bell, and three more strokes of the bell. This signal is made by a vessel __________.

    N a. at anchor and giving warning
    Y b. aground
    N c. at anchor and greater than 100 meters in length
    N d. not under command and at anchor

4310: BOTH INTERNATIONAL & INLAND Which vessel is to be regarded as a vessel "restricted in her ability to maneuver"?

    N a. A vessel fishing with trawls
    N b. A vessel which has lost the use of her steering gear
    N c. A vessel with a draft of such depth that she cannot change her course
    Y d. A vessel engaged in mineclearing

4316: BOTH INTERNATIONAL & INLAND When shall the stand-on vessel in a crossing situation take action to avoid the other vessel?

    N a. When a risk of collision exists
    Y b. When action by the give-way vessel alone will not prevent a collision
    N c. When the bearing to give-way vessel becomes steady
    N d. When the vessels become less than 1/2 mile apart

4399: BOTH INTERNATIONAL & INLAND Which vessel would display a cone, apex downward?

    N a. A fishing vessel with outlying gear
    Y b. A vessel proceeding under sail and machinery
    N c. A vessel engaged in diving operations
    N d. A vessel being towed

4439: BOTH INTERNATIONAL & INLAND Signals required for vessels aground include __________.

    N a. by night, the anchor lights for a vessel of her length, and three red lights in a vertical line
    N b. a short, a prolonged, and a short blast
    Y c. by day, three black balls in a vertical line
    N d. All of the above

4545: BOTH INTERNATIONAL & INLAND You are approaching another vessel and are not sure whether danger of collision exists. You must assume __________.

    Y a. there is risk of collision
    N b. you are the give way vessel
    N c. the other vessel is also in doubt
    N d. All of the above are correct.

4586: BOTH INTERNATIONAL & INLAND What describes a head-on situation?

    N a. Seeing one red light of a vessel directly ahead
    N b. Seeing two forward white towing lights in a vertical line on a towing vessel directly ahead
    N c. Seeing both sidelights of a vessel directly off your starboard beam
    Y d. Seeing both sidelights of a vessel directly ahead

4594: BOTH INTERNATIONAL & INLAND The Rules state that certain factors are to be taken into account when determining safe speed. Those factors include __________.

    Y a. state of wind, sea, and current, and the proximity of navigational hazards
    N b. maximum attainable speed of your vessel
    N c. temperature
    N d. aids to navigation that are available

4595: BOTH INTERNATIONAL & INLAND Which vessel, when anchored at night, would NOT be required to show anchor lights?

    N a. A power-driven vessel
    N b. A vessel on pilotage duty
    Y c. A vessel dredging
    N d. A vessel restricted in her ability to maneuver

4600: BOTH INTERNATIONAL & INLAND Which vessel would sound a fog signal consisting of the ringing of a bell for 5 seconds?

    N a. A vessel engaged in fishing, at anchor
    N b. A vessel restricted in its ability to maneuver, at anchor
    Y c. A sailing vessel, at anchor
    N d. A sailing vessel becalmed

8002: INTERNATIONAL ONLY Which statement is true concerning a vessel "constrained by her draft"?

    Y a. She must be a power-driven vessel.
    N b. She is not under command.
    N c. She may be a vessel being towed.
    N d. She is hampered because of her work.

8008: 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
    N c. two short blasts
    Y d. two prolonged followed by two short blasts

8070: INTERNATIONAL ONLY In addition to her running lights, an underway vessel constrained by her draft may carry in a vertical line __________.

    N a. a red light, a white light, and a red light
    N b. two red lights
    N c. two white lights
    Y d. three red lights