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.


120: INLAND ONLY What shall be used to indicate the presence of a partly submerged object being towed?


138: INLAND ONLY A law enforcement vessel patrolling a marine regatta may show either a flashing blue light or __________.


144: INLAND ONLY A light used to signal passing intentions must be an __________.


177: BOTH INTERNATIONAL & INLAND You see the display of lights shown. This could indicate a __________. (DIAGRAM 64 )

    N a. dredge working at anchor
    N b. dredge restricted in its ability to maneuver
    N c. 55-meter tug towing astern, length of tow exceeds 200 meters
    Y d. 65-meter tug towing astern, length of tow 150 meters

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

322: BOTH INTERNATIONAL & INLAND The vessel whose lights are shown is navigating in a narrow channel. Which statement about this vessel is TRUE? (DIAGRAM 82 )

    Y a. It shall not impede the passage of any other vessel navigating within the channel or fairway.
    N b. It is the stand-on vessel
    N c. It may anchor in the channel or fairway
    N d. It shows two balls

365: BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown. Vessel "A" sounds one short blast on the whistle. Vessel "B" is the __________. (DIAGRAM 42 )

    Y a. stand-on vessel
    N b. give-way vessel
    N c. overtaking vessel
    N d. None of the above

368: 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
    Y b. give-way vessel
    N c. overtaking vessel
    N d. None of the above

4006: BOTH INTERNATIONAL & INLAND Your vessel is approaching a bend. You hear a prolonged blast from around the bend. You should __________.

    N a. back your engines
    N b. stop your engines and drift
    Y c. answer with one prolonged blast
    N d. sound the danger signal

4054: BOTH INTERNATIONAL & INLAND A vessel is "engaged in fishing" when __________.

    N a. her gear extends more than 100 meters from the vessel
    N b. she is using any type of gear, other than lines
    Y c. she is using fishing apparatus which restricts her maneuverability
    N d. she has any fishing gear on board

4128: BOTH INTERNATIONAL & INLAND Which display indicates a vessel conducting mineclearance operations?

    N a. Three balls in a vertical line
    N b. Two balls in a vertical line
    Y c. One ball near the foremast and one ball at each yardarm
    N d. One diamond near the foremast and one ball at each yardarm

4140: BOTH INTERNATIONAL & INLAND The rule regarding look-outs applies __________.

    N a. in restricted visibility
    N b. between dusk and dawn
    N c. in heavy traffic
    Y d. All of the above

4199: BOTH INTERNATIONAL & INLAND A vessel which is fishing must show sidelights and a stern light only when __________.

    N a. anchored
    N b. underway
    N c. dead in the water
    Y d. underway and making way

4206: BOTH INTERNATIONAL & INLAND At night, a vessel shall indicate that she is restricted in her ability to maneuver by showing in a vertical line two __________.

    N a. red lights
    N b. red lights and two white lights
    Y c. red lights with a white light in between
    N d. white lights with a red light in between

4249: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning a vessel equipped with operational radar?

    Y a. She must use this equipment to obtain early warning of risk of collision.
    N b. The use of a radar excuses a vessel from the need of a look-out.
    N c. The radar equipment is only required to be used in restricted visibility.
    N d. The safe speed of such a vessel will likely be greater than that of vessels without radar.

4263: BOTH INTERNATIONAL & INLAND In a dense fog, you hear a whistle signal of one prolonged blast followed by three short blasts. This signal is sounded by a __________.

    Y a. manned vessel being towed
    N b. fishing vessel underway trawling
    N c. pilot vessel underway making a special signal
    N d. vessel not under command

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

4392: BOTH INTERNATIONAL & INLAND Which vessel does NOT sound a fog signal of one prolonged followed by two short blasts?

    N a. A vessel dredging
    Y b. A vessel being towed
    N c. A vessel engaged in fishing
    N d. A sailing vessel

4404: BOTH INTERNATIONAL & INLAND A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to change course shall, when making way, exhibit __________.

    N a. the masthead lights for a towing vessel
    N b. the lights for a vessel restricted in its ability to maneuver
    N c. sidelights, stern light and towing light
    Y d. All of the above

4433: BOTH INTERNATIONAL & INLAND Which vessel is NOT to be regarded as "restricted in her ability to maneuver"?

    N a. A vessel transferring provisions while underway
    Y b. A pushing vessel and a vessel being pushed when connected in a composite unit
    N c. A vessel servicing a navigation mark
    N d. A vessel launching aircraft

4447: BOTH INTERNATIONAL & INLAND A rigid replica of the International Code flag "A" may be shown by a vessel __________.

    N a. pulling a submarine cable
    Y b. engaged in diving operations
    N c. engaged in underway replenishment
    N d. transferring explosives

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

4602: BOTH INTERNATIONAL & INLAND A fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a __________.

    N a. vessel being towed
    N b. fishing vessel engaged in trawling
    N c. vessel at anchor warning of her location
    Y d. power-driven pilot vessel on station underway

4606: BOTH INTERNATIONAL & INLAND A power driven vessel when towing and the length of the tow exceeds 200 meters shall exhibit during daylight hours where they can best be seen which of the following shapes?

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

4636: BOTH INTERNATIONAL & INLAND A vessel sailing shall keep out of the way of all of the following vessels except a vessel __________.

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

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

4848: BOTH INTERNATIONAL & INLAND The Rules state that certain factors are to be taken into account when determining safe speed. One of the factors is the __________.

    N a. radio communications that are available
    N b. maximum speed of your vessel
    N c. temperature
    Y d. current

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

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

8115: INTERNATIONAL ONLY Of the vessels listed, which must keep out of the way of all the others?

    N a. A vessel constrained by her draft
    N b. A vessel restricted in her ability to maneuver
    Y c. A vessel pushing a barge
    N d. A vessel engaged in fishing