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.


58: INLAND ONLY While underway, you sight the lights as shown, with the yellow lights flashing. You should __________. (DIAGRAM 81 )


122: INLAND ONLY A barge more than 50 meters long is required to show how many white anchor lights when anchored in a Secretary approved "special anchorage area"?


124: INLAND ONLY Which term is NOT defined in the Inland Navigation Rules?


163: INLAND ONLY A commercial vessel engaged in public safety activities may display a(n) __________.

    N a. flashing yellow light
    N b. flashing blue light
    N c. alternately flashing blue and red light
    Y d. alternately flashing red and yellow light

194: BOTH INTERNATIONAL & INLAND You are on vessel "A" and proceeding down a narrow channel as shown. You can only navigate within the channel and vessel "B" is crossing so as to involve risk of collision. Which action would be most prudent? (DIAGRAM 40 )

    N a. Back down and allow vessel "B" to cross ahead.
    N b. Alter course to starboard to give him more room.
    N c. Maintain course and speed.
    Y d. Sound the danger signal and take evasive action.

300: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown is a(n) __________. (DIAGRAM 79 )

    N a. sailing vessel
    Y b. vessel towing astern
    N c. vessel engaged in fishing
    N d. vessel dredging

727: INLAND ONLY Maneuvering signals shall be sounded on inland waters by __________.

    N a. all vessels when meeting, crossing, or overtaking and in sight of one another
    N b. all vessels meeting or crossing at a distance within half a mile of each other and not in sight of one another
    Y c. power-driven vessels overtaking and in sight of one another
    N d. power-driven vessels crossing at a distance within half a mile of each other and NOT in sight of one another

4056: BOTH INTERNATIONAL & INLAND A sailing vessel with the wind abaft the beam is navigating in restricted visibility. She should sound __________.

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

4178: BOTH INTERNATIONAL & INLAND You are underway in fog and you hear one prolonged blast followed by two short blasts. This is a vessel __________.

    Y a. towing
    N b. engaged on pilotage duty
    N c. aground in a fairway
    N d. stopped and making no way through the water

4214: BOTH INTERNATIONAL & INLAND A sailing vessel of over 20 meters in length underway must show a __________.

    N a. red light over a green light at the masthead
    N b. white masthead light
    N c. combined lantern
    Y d. stern light

4247: BOTH INTERNATIONAL & INLAND What day-shape is to be shown by a vessel aground?

    N a. A cylinder
    N b. Two cones with their apexes together
    N c. Two black balls in a vertical line
    Y d. Three black balls in a vertical line

4262: BOTH INTERNATIONAL & INLAND A vessel not under command making way at night would show __________.

    N a. two all-round red lights in a vertical line
    N b. anchor lights and sidelights
    N c. two all-round white lights in a vertical line, sidelights and a stern light
    Y d. two all-round red lights in a vertical line, sidelights, and a stern light

4345: BOTH INTERNATIONAL & INLAND A vessel showing a green light over a white light in a vertical line above the level of the sidelights is __________.

    N a. engaged in underwater construction
    N b. under sail and power
    N c. a pilot vessel
    Y d. trawling

4374: BOTH INTERNATIONAL & INLAND A vessel aground would show the same day-shape as a __________.

    N a. vessel towing a submerged object
    N b. dredge underway and dredging
    N c. hydrographic survey vessel at anchor and surveying
    Y d. None of the above

4389: BOTH INTERNATIONAL & INLAND An overtaking situation at night would be one in which one vessel sees which light(s) of a vessel ahead?

    N a. Masthead lights and sidelights
    N b. One sidelight, the masthead lights and stern light
    N c. Both sidelights
    Y d. Stern light

4390: BOTH INTERNATIONAL & INLAND What lights must sailboats show when underway at night?

    N a. One all-round white light
    N b. A stern light
    N c. Red and green sidelights
    Y d. Red and green sidelights and a stern light

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

4488: BOTH INTERNATIONAL & INLAND You are approaching a bend in a channel. You cannot see around the bend because of the height of the bank. You should __________.

    N a. stop engines and navigate with caution
    N b. stay in the middle of the channel
    N c. sound passing signals to any other vessel that may be on the other side of the bend
    Y d. sound a whistle blast of 4 to 6 seconds duration

4499: BOTH INTERNATIONAL & INLAND At night, the lights shown would indicate a vessel __________. (DIAGRAM 76 )

    Y a. trawling
    N b. laying submarine cable
    N c. towing astern
    N d. dredging

4521: BOTH INTERNATIONAL & INLAND According to the Navigation Rules, all of the following are engaged in fishing EXCEPT a vessel __________.

    N a. setting nets
    N b. trawling
    N c. using a dredge net
    Y d. trolling

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

4614: BOTH INTERNATIONAL & INLAND Which vessel may show identifying lights when not actually engaged in her occupation?

    N a. A fishing vessel
    N b. A pilot vessel
    N c. A mineclearance vessel
    Y d. None of the above

4624: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown could be a vessel __________. (DIAGRAM 56 )

    N a. towing a barge alongside
    Y b. underway and laying cable
    N c. at anchor and dredging
    N d. underway and carrying dangerous cargo

4735: BOTH INTERNATIONAL & INLAND One of the signals, other than a distress signal, that can be used by a vessel to attract attention is a(n) __________.

    N a. red star shell
    Y b. searchlight
    N c. burning barrel
    N d. orange smoke signal

4846: BOTH INTERNATIONAL & INLAND In determining "safe speed", the Rules list all of the following as factors which must be taken into account EXCEPT the __________.

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

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

8011: INTERNATIONAL ONLY At night, a power-driven vessel underway of less than 7 meters in length where its maximum speed does not exceed 7 knots may show, as a minimum, __________.

    N a. sidelights and a stern light
    N b. the lights required for a vessel more than 7 meters in length
    N c. sidelights only
    Y d. one all-round white light

8088: INTERNATIONAL ONLY A 20-meter power-driven vessel pushing ahead or towing alongside will display __________.

    N a. two towing lights in a vertical line
    N b. a towing light above the stern light
    N c. two all-round red lights at the masthead
    Y d. two masthead lights in a vertical line

8097: INTERNATIONAL ONLY Which day-shape is prescribed for a vessel constrained by her draft?

    N a. A black diamond
    Y b. A cylinder
    N c. A black ball
    N d. A black cone, apex upward

8136: INTERNATIONAL ONLY A power-driven vessel pushing ahead or towing alongside will show sidelights, a stern light, and __________.

    N a. an all-round red light where it can best be seen
    N b. two yellow masthead lights in a vertical line
    Y c. two masthead lights in a vertical line
    N d. a single white light forward