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.


40: INLAND ONLY The light used to signal passing intentions is a(n) __________.


108: INLAND ONLY You are overtaking another power-driven vessel in a narrow channel. The other vessel will have to move to allow you to pass. You wish to overtake the other vessel and leave her on your starboard side. Your first whistle signal should be __________.


110: INLAND ONLY Which statement is TRUE concerning the fog signal of a sailing vessel 25 meters in length, anchored in a "special anchorage area" approved by the Secretary?


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

    N a. A black cone, apex downward
    Y b. An all-round white light at each end of the tow
    N c. A flare-up light
    N d. All of the above

150: INLAND ONLY A power-driven vessel, when leaving a dock or berth, must sound what signal?

    N a. Three short blasts
    N b. A long blast
    Y c. A prolonged blast
    N d. No signal is required.

172: BOTH INTERNATIONAL & INLAND You are on watch and sight a vessel showing only these lights. They indicate a __________. (DIAGRAM 59 )

    N a. sailing vessel
    N b. vessel engage in trawling
    Y c. power-driven vessel
    N d. mineclearance vessel

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.

318: BOTH INTERNATIONAL & INLAND Which dayshape(s) would be displayed by the vessel engaged in the operation indicated by the lights shown. (DIAGRAM 82 )

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

369: 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
    N b. overtaking vessel
    Y c. give-way vessel
    N d. None of the above

4005: BOTH INTERNATIONAL & INLAND Which signal is recognized as a distress signal?

    N a. Directing the beam of a searchlight at another vessel
    Y b. A smoke signal giving off orange colored smoke
    N c. A whistle signal of one prolonged and three short blasts
    N d. International Code Signal "PAN" spoken over the radiotelephone

4005: BOTH INTERNATIONAL & INLAND Which signal is recognized as a distress signal?

    N a. Directing the beam of a searchlight at another vessel
    Y b. A smoke signal giving off orange colored smoke
    N c. A whistle signal of one prolonged and three short blasts
    N d. International Code Signal "PAN" spoken over the radiotelephone

4032: BOTH INTERNATIONAL & INLAND Which vessel may combine her sidelights and stern light in one lantern on the fore and aft centerline of the vessel?

    Y a. A 16-meter sailing vessel
    N b. A 25-meter power-driven vessel
    N c. A 28-meter sailing vessel
    N d. Any non-self-propelled vessel

4098: BOTH INTERNATIONAL & INLAND You can indicate that your vessel is in distress by __________.

    N a. displaying a large red flag
    N b. displaying three black balls in a vertical line
    N c. sounding four or more short rapid blasts on the whistle
    Y d. continuously sounding the fog whistle

4113: BOTH INTERNATIONAL & INLAND Which signal, other than a distress signal, can be used by a vessel to attract attention?

    Y a. Searchlight beam
    N b. Continuous sounding of a fog signal apparatus
    N c. Burning barrel
    N d. Orange smoke signal

4158: BOTH INTERNATIONAL & INLAND A 25-meter vessel trawling will show the dayshape(s) consisting of __________.

    N a. a basket
    N b. two balls
    Y c. two cones, apexes together
    N d. a cone, apex downward

4192: BOTH INTERNATIONAL & INLAND In restricted visibility, a vessel fishing with nets shall sound at intervals of two minutes __________.

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

4213: BOTH INTERNATIONAL & INLAND Which statement concerning whistle signals is FALSE?

    N a. When a pushing vessel and a vessel pushed are connected in a composite unit, the unit sounds the fog signal of a power-driven vessel.
    N b. A vessel at anchor may sound one short, one prolonged, and one short blast.
    N c. A pilot vessel may sound an identity signal on the whistle.
    Y d. A vessel engaged in towing in fog shall sound a fog signal at intervals of one minute.

4265: BOTH INTERNATIONAL & INLAND While underway and pushing a barge ahead, your vessel enters a heavy rain storm. You should sound __________.

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

4295: BOTH INTERNATIONAL & INLAND The use of the danger signal __________.

    N a. replaces directional signals
    N b. makes the other vessel the stand-on vessel
    Y c. indicates doubt as to another vessels actions
    N d. is the same as a "MAYDAY" signal

4360: BOTH INTERNATIONAL & INLAND While underway, you see a vessel displaying the day-shapes shown. Which action should you take? (DIAGRAM 6 )

    N a. Maintain course and speed
    N b. Provide assistance, the other vessel is in distress
    Y c. Stay clear, the other vessel is maneuvering with difficulty
    N d. Stop your vessel and sound passing signals

4419: BOTH INTERNATIONAL & INLAND A vessel 25 meters in length must have which sound signaling appliance onboard?

    N a. None is required
    N b. Whistle only
    Y c. Whistle and bell only
    N d. Whistle, bell, and gong

4480: BOTH INTERNATIONAL & INLAND A power-driven vessel towing another vessel astern (tow less than 200 meters) shall show __________.

    N a. a small white light abaft the funnel
    N b. three masthead lights in a vertical line instead of either the forward or after masthead lights
    Y c. two masthead lights in a vertical line instead of either the forward or after masthead lights
    N d. two towing lights in a vertical line at the stern

4518: BOTH INTERNATIONAL & INLAND As defined in the Rules, a towing light is a yellow light having the same characteristics as a(n) __________.

    N a. masthead light
    N b. all-round light
    N c. sidelight
    Y d. stern light

4539: BOTH INTERNATIONAL & INLAND All of the following are distress signals under the Rules EXCEPT __________.

    Y a. a green star signal
    N b. orange-colored smoke
    N c. red flares
    N d. the repeated raising and lowering of outstretched arms

4546: BOTH INTERNATIONAL & INLAND Which vessel may use the danger signal?

    N a. The vessel to starboard when two power-driven vessels are crossing
    N b. A vessel engaged in fishing, crossing the course of a sailing vessel
    N c. Either of two power-driven vessels meeting head-on
    Y d. All of the above

4609: BOTH INTERNATIONAL & INLAND In determining "safe speed", all of the following must be taken into account EXCEPT the __________.

    Y a. maximum horsepower of your vessel
    N b. presence of background lights at night
    N c. draft of your vessel
    N d. maneuverability of your vessel

4652: BOTH INTERNATIONAL & INLAND A vessel displaying the day-shapes shown is __________. (DIAGRAM 18 )

    N a. towing astern with a tow greater than 200 meters in length
    N b. not under command
    Y c. dredging
    N d. carrying dangerous cargo

4706: BOTH INTERNATIONAL & INLAND A "flashing light" is a light that __________.

    Y a. flashes at regular intervals at a frequency of 120 flashes or more per minute
    N b. is yellow in color
    N c. is visible over an arc of the horizon of not less than 180 nor more than 225
    N d. All of the above

6000: BOTH INTERNATIONAL & INLAND While underway in fog, you hear a vessel ahead sound two prolonged blasts on the whistle. You should __________.

    N a. sound two blasts and change course to the left
    Y b. sound only fog signals until the other vessel is sighted
    N c. sound whistle signals only if you change course
    N d. not sound any whistle signals until the other vessel is sighted

8101: INTERNATIONAL ONLY Which statement applies to a vessel "constrained by her draft"?

    N a. The term only applies to vessels in narrow channels.
    Y b. She is severely restricted in her ability to change her course because of her draft in relation to the available depth and width of navigable water.
    N c. She is designated as a "vessel restricted in her ability to maneuver".
    N d. The vessel must be over 100 meters in length.