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.


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


33: INLAND ONLY For the purpose of the Inland Navigation Rules, the term "inland waters" includes __________.


61: INLAND ONLY Your power-driven vessel is overtaking another power-driven vessel in a narrow channel. You wish to overtake her on her starboard side. You should sound a whistle signal of __________.


114: INLAND ONLY At night, what lights are required on barges moored in a group formation more than two barges wide?

    N a. All-round yellow lights placed at the corners of each barge in the group
    N b. Two yellow lights in a vertical line at the corner extremities of the group
    Y c. Two unobstructed all-round white lights
    N d. Two unobstructed all-round red lights

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.

339: INLAND ONLY Two power-driven vessels are crossing within a half a mile of each other as shown. Vessel "A" sounds one short blast on the whistle. Vessel "B" should sound __________. (DIAGRAM 42 )

    N a. one prolonged, one short, one prolonged and one short blasts
    N b. two short blasts
    Y c. one short blast
    N d. None of the above

351: INTERNATIONAL ONLY Two power-driven vessels are crossing within one half mile of each other as shown. Vessel "A" sounds one short blast of the whistle. This signal means __________. (DIAGRAM 42 )

    Y a. "I am altering my course to starboard"
    N b. "I am operating astern propulsion"
    N c. "I am altering my course to port"
    N d. None of the above

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

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

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

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

4004: BOTH INTERNATIONAL & INLAND At night, a barge being towed astern must display __________.

    N a. red and green sidelights only
    N b. a white stern light only
    Y c. sidelights and a stern light
    N d. one all-round white light

4046: BOTH INTERNATIONAL & INLAND You are underway on vessel "A" and sight vessel "B" which is a vessel underway and fishing as shown. Which statement is true? (DIAGRAM 14 )

    N a. Vessel "A" must keep out of the way of vessel "B" because "B" is to port.
    Y b. Vessel "A" must keep out of the way of vessel "B" because "B" is fishing.
    N c. Vessel "B" must keep out of the way of vessel "A" because "A" is to starboard.
    N d. In this case, both vessels are required by the Rules to keep clear of each other.

4048: BOTH INTERNATIONAL & INLAND If it becomes necessary for a stand-on vessel to take action to avoid collision, she shall NOT, if possible, __________.

    N a. decrease speed
    N b. increase speed
    Y c. turn to port for a vessel on her own port side
    N d. turn to starboard for a vessel on her own port side

4080: BOTH INTERNATIONAL & INLAND You are underway, in fog, when you hear a whistle signal of one prolonged blast followed by two short blasts. This signal could indicate a vessel __________.

    Y a. not under command
    N b. being towed
    N c. aground
    N d. All of the above

4115: BOTH INTERNATIONAL & INLAND What is the minimum sound signaling equipment required aboard a vessel 24 meters in length?

    N a. A bell only
    N b. A whistle only
    Y c. A bell and a whistle
    N d. Any means of making an efficient sound signal

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

4143: BOTH INTERNATIONAL & INLAND Which statement is true concerning a towing light when a towing vessel is towing astern?

    N a. When a towing light is shown, no stern light is necessary.
    N b. When a stern light is shown, no towing light is necessary.
    N c. The towing light is shown below the stern light.
    Y d. The towing light is shown above the stern light.

4183: BOTH INTERNATIONAL & INLAND When anchoring a 25-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 sidelights
    N d. the sidelights and a stern light

4194: BOTH INTERNATIONAL & INLAND At night, you are towing a partly submerged vessel, 20 meters in length and 4 meters in breadth. What lights must you display on the towed vessel?

    N a. A white light at the stern
    N b. Two white lights side by side at the stern
    Y c. A white light at the forward end and a white light at the after end
    N d. Two red lights in a vertical line at the after end

4215: BOTH INTERNATIONAL & INLAND An inconspicuous, partly submerged vessel or object being towed, where the length of tow is 100 meters, shall show __________.

    N a. yellow lights at each end
    N b. two red lights in a vertical line
    N c. a black ball
    Y d. a diamond shape

4257: BOTH INTERNATIONAL & INLAND Which vessel is required to sound a fog signal of one prolonged followed by two short blasts?

    N a. A vessel not under command
    N b. A sailing vessel, underway
    N c. A vessel restricted in its ability to maneuver, at anchor
    Y d. All of the above

4277: BOTH INTERNATIONAL & INLAND You are underway in a fog when you hear a whistle signal of one prolonged blast followed by two short blasts. This signal could indicate all of the following EXCEPT a vessel __________.

    Y a. being towed
    N b. not under command
    N c. fishing with trawls
    N d. towing astern

4336: BOTH INTERNATIONAL & INLAND While underway and in sight of another vessel crossing less than .5 mile away, you put your engines full speed astern. Which statement concerning whistle signals is TRUE?

    Y 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.
    N d. You need not sound any whistle signals.

4397: BOTH INTERNATIONAL & INLAND In a crossing situation, a vessel fishing must keep out of the way of a vessel which is __________.

    N a. under sail
    N b. towing
    Y c. restricted in her ability to maneuver
    N d. engaged in pilotage duty

4411: BOTH INTERNATIONAL & INLAND For the purpose of the Rules, except where otherwise required, the term __________.

    Y a. "vessel" includes seaplanes
    N b. "seaplane" includes nondisplacement craft
    N c. "vessel engaged in fishing" includes a vessel fishing with trolling lines
    N d. "vessel restricted in her ability to maneuver" includes fishing vessels

4479: BOTH INTERNATIONAL & INLAND What signal indicates doubt that sufficient action is being taken by another vessel to avoid collision?

    Y a. Five short and rapid blasts of the whistle
    N b. Three long blasts of the whistle
    N c. Three short and rapid blasts of the whistle
    N d. One prolonged blast followed by three short blasts of the whistle

4565: BOTH INTERNATIONAL & INLAND You are approaching a bend in a river where, due to the bank, you cannot see around the other side. A vessel on the other side of the bend sounds one prolonged blast. You should __________.

    N a. sound passing signals
    N b. not sound any signal until you sight the other vessel
    Y c. sound a prolonged blast
    N d. sound the danger signal

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

4737: BOTH INTERNATIONAL & INLAND You are approaching a narrow channel. Another vessel in the channel can only be navigated safely in that channel. You should __________.

    Y a. not cross the channel if you might impede the other vessel
    N b. hold your course and speed if she is on your port bow
    N c. sound three short blasts, and take all way off your vessel
    N d. sound two prolonged blasts followed by one short blast

8020: INTERNATIONAL ONLY A vessel not under command sounds the same fog signal as a vessel __________.

    N a. towing
    N b. constrained by her draft
    N c. under sail
    Y d. All of the above

8089: BOTH INTERNATIONAL AND INLAND A towing light __________.

    N a. flashes at regular intervals of 50-70 flashes per minute
    Y b. is yellow in color
    N c. shows an unbroken light over an arc of the horizon of not less than 180° nor more than 225°
    N d. All of the above