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.


7: INLAND ONLY When power-driven vessels are crossing, a signal of one short blast by either vessel means __________.


44: INLAND ONLY What lights are required for a barge being pushed ahead, not being part of a composite unit?


155: BOTH INTERNATIONAL & INLAND You are underway at night and you sight the lights shown. You know these lights indicate a(n) __________. (DIAGRAM 47 )


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

341: 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. This signal means __________. (DIAGRAM 42 )

    Y a. "I intend to leave you on my port side"
    N b. "I intend to overtake you on your port side"
    N c. "I am altering my course to starboard"
    N d. None of the above

401: INLAND ONLY Two power-driven vessels are meeting in the situation as shown in a narrow channel on the Great Lakes. Vessel "A" is downbound with a following current. Vessel "B" should __________. (DIAGRAM 37 )

    Y a. take action to permit safe passage
    N b. have the right of way
    N c. initiate the maneuvering signals
    N d. None of the above

4000: BOTH INTERNATIONAL & INLAND Your vessel is 75 meters in length and restricted in her ability to maneuver. Visibility is restricted. What signal do you sound if you are carrying out your work at anchor?

    N a. Five seconds ringing of a bell at intervals of not more than one minute
    Y b. One prolonged blast followed by two short blasts on the whistle at intervals of not more than two minutes
    N c. Five seconds ringing of a bell and five second sounding of a gong at intervals of not more than one minute
    N d. Four short blasts on the whistle at intervals of not more than two minutes

4018: BOTH INTERNATIONAL & INLAND Which is a distress signal?

    N a. A triangular flag above or below a ball
    N b. The International Code Signal of distress indicated by "JV"
    N c. A green smoke signal
    Y d. Flames on the vessel as from a burning tar barrel

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

4086: BOTH INTERNATIONAL & INLAND You are on vessel "A" and approaching vessel "B" as shown. You are not sure whether your vessel is crossing or overtaking vessel "B". You should __________. (DIAGRAM 15 )

    N a. change course to make the situation definitely either crossing or overtaking
    N b. consider it to be a crossing situation
    Y c. consider it to be an overtaking situation
    N d. consider it a crossing situation if you can cross ahead safely

4145: BOTH INTERNATIONAL & INLAND You are in charge of a 120-meter power-driven vessel at anchor in fog, sounding the required anchor signals. You hear the fog signal of a vessel underway off your port bow. You may sound __________.

    N a. at least five short and rapid blasts
    N b. two short blasts
    Y c. one short, one prolonged, and one short blast
    N d. three short blasts

4205: BOTH INTERNATIONAL & INLAND A towing vessel is towing two barges astern. The length of the tow from the stern of the tug to the stern of the last barge is 250 meters. The towing vessel is 45 meters in length. How many white masthead lights should be displayed on the tugboat at night?

    N a. 1
    N b. 2
    Y c. 3
    N d. 4

4228: BOTH INTERNATIONAL & INLAND When is a stand-on vessel FIRST allowed by the Rules to take action in order to avoid collision?

    N a. When the two vessels are less than half a mile from each other.
    Y b. When the give-way vessel is not taking appropriate action to avoid collision.
    N c. When collision is imminent.
    N d. The stand-on vessel is never allowed to take action.

4267: BOTH INTERNATIONAL & INLAND You are overtaking a vessel at night and you see a yellow light showing above the stern light of the overtaken vessel. The overtaken vessel is __________.

    N a. underway and dredging
    N b. pushing ahead or towing alongside
    Y c. towing astern
    N d. a pilot vessel

4306: BOTH INTERNATIONAL & INLAND Which vessel is directed not to impede the passage of a vessel which can only navigate inside a narrow channel?

    Y a. A vessel of less than 20 meters in length
    N b. A vessel not under command
    N c. A vessel engaged in surveying
    N d. All of the above

4325: BOTH INTERNATIONAL & INLAND A vessel aground in fog shall sound, in addition to the proper anchor signal, which of the following?

    N a. Three strokes on the gong before and after sounding the anchor signal
    Y b. Three strokes on the bell before and after the anchor signal
    N c. Four short blasts on the whistle
    N d. One prolonged and one short blast on the whistle

4456: BOTH INTERNATIONAL & INLAND What is the required fog signal for a manned vessel being towed at night?

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

4484: BOTH INTERNATIONAL & INLAND A power-driven vessel at anchor, not fishing or otherwise restricted in its ability to maneuver, sounds her fog signal at intervals of not __________.

    Y a. more than one minute
    N b. more than two minutes
    N c. more than three minutes
    N d. less than two minutes

4665: BOTH INTERNATIONAL & INLAND What is the minimum sound signaling equipment required aboard a vessel 10 meters in length?

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

4670: BOTH INTERNATIONAL & INLAND What determines if a vessel is "restricted in her ability to maneuver"?

    N a. Whether or not all of the vessel's control equipment is in working order
    N b. The vessel's draft in relation to the available depth of water
    Y c. Whether the nature of the vessel's work limits maneuverability required by the Rules
    N d. Whether or not the vessel is the give-way vessel in a meeting situation

4683: BOTH INTERNATIONAL & INLAND The stern light shall be positioned such that it will show from dead astern to how many degrees on each side of the stern of the vessel?

    N a. 135.0°
    N b. 112.5°
    Y c. 67.5°
    N d. 22.5°

4710: BOTH INTERNATIONAL & INLAND Which vessel would exhibit sidelights when underway and not making way?

    N a. A vessel engaged in fishing
    N b. A vessel not under command
    N c. A vessel engaged in dredging
    Y d. A power-driven vessel

4713: BOTH INTERNATIONAL & INLAND What equipment for fog signals is required for a vessel 20 meters in length?

    Y a. Whistle and bell only
    N b. Whistle only
    N c. Bell only
    N d. Whistle, bell, and gong

4865: BOTH INTERNATIONAL & INLAND Your 15-meter vessel is crossing a narrow channel and a large cargo vessel to starboard is within the channel and crossing your course. You should __________.

    N a. hold your course and speed
    N b. sound the danger signal
    Y c. keep out of the way of the cargo vessel
    N d. do not cross the channel

4868: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning two sailing vessels approaching each other?

    N a. The vessel making the most speed is the give-way vessel.
    Y b. A sailing vessel overtaking another is the give-way vessel.
    N c. A sailing vessel seeing another to leeward on an undetermined tack shall hold her course.
    N d. All of the above

5300: BOTH INTERNATIONAL & INLAND A traffic separation zone is that part of a traffic separation scheme which __________.

    N a. is located between the scheme and the nearest land
    Y b. separates traffic proceeding in one direction from traffic proceeding in the opposite direction
    N c. is designated as an anchorage area
    N d. contains all the traffic moving in the same direction

6540: BOTH INTERNATIONAL & INLAND A vessel may enter a traffic separation zone __________.

    N a. in an emergency
    N b. to engage in fishing within the zone
    N c. to cross the traffic separation scheme
    Y d. All of the above

8076: INTERNATIONAL ONLY You are underway in a narrow channel, and you are being overtaken by a vessel astern. After the overtaking vessel sounds the proper signal indicating his intention to pass your vessel on your starboard side, you signal your agreement by sounding __________.

    N a. two prolonged followed by two short blasts
    Y b. one prolonged, one short, one prolonged, and one short blast
    N c. one short blast
    N d. two prolonged blasts

8084: INTERNATIONAL ONLY While underway at night, a power-driven vessel of less than 7 meters in length, whose maximum speed which does not exceed 7 knots, may show __________.

    N a. sidelights combined in a single lantern, only
    N b. an all-round flashing yellow light, only
    Y c. one all-round white light, only
    N d. a lantern showing a white light exhibited in sufficient time to prevent collision, only

8135: INTERNATIONAL ONLY What characteristic must a light used to indicate passing intentions have?

    N a. It must be an all-round red light.
    Y b. It must be an all-round white light.
    N c. It must be an all-round yellow light.
    N d. It can be either an all-round white or yellow light.