USCG Safety: 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.


6: Records of tests and inspections of a cargo vessel's fire extinguishing systems shall be kept on board __________.


65: The most serious effect of trapped air in a diesel engine jacket water cooling system is that it __________.


89: To determine what navigation lights and day-shapes must be displayed on mobile offshore drilling units under tow, you should check the __________.


91: Except in rare cases, it is impossible to extinguish a shipboard fire by __________.

    Y a. removing the fuel
    N b. interrupting the chain reaction
    N c. removing the oxygen
    N d. removing the heat

262: Which fire detection system is actuated by sensing a heat rise in a compartment?

    N a. Manual fire detection system
    Y b. Automatic fire detection system
    N c. Smoke detection system
    N d. Watchman's supervisory system

286: On cargo vessels, the discharge of the required quantity of carbon dioxide into any "tight" space shall be completed within __________.

    N a. 1 minute
    Y b. 2 minutes
    N c. 4 minutes
    N d. 6 minutes

341: The Master or other vessel representative must contact the nearest Coast Guard Marine Safety Office within five days of a(n) __________.

    Y a. grounding
    N b. injury which requires first aid
    N c. accident which requires $(SA)2500 of repairs
    N d. All of the above are correct.

441: Your vessel is broken down and rolling in heavy seas. You can reduce the possibility of capsizing by __________.

    N a. moving all personnel aft
    N b. constantly shifting the rudder
    Y c. rigging a sea anchor
    N d. moving all personnel forward and low

477: The radiotelephone required by the "Vessel Bridge-to-Bridge Radiotelephone Act" is for the exclusive use of __________.

    N a. the Master or person in charge of the vessel
    N b. a person designated by the Master
    N c. a person on board to pilot the vessel
    Y d. All of the above

615: The operator of each vessel subject to the pollution regulations is NOT required to keep written records of __________.

    N a. the name of each person designated as a person in charge
    N b. the date and results of the most recent equipment inspection
    Y c. cargoes carried and dates delivered, including destinations
    N d. hose information not marked on the hose

757: Which tank vessel must carry a signaling lamp?

    N a. A 1,000 GT tanker on a coastwise voyage
    Y b. A 200 GT tanker on an international voyage
    N c. A 300 GT tanker on an intercoastal voyage
    N d. All of the above

809: If the patient vomits during mouth-to mouth resuscitation, the rescuer should FIRST __________.

    N a. ignore it and continue mouth-to-mouth ventilation
    N b. pause for a moment until the patient appears quiet again, then resume ventilation mouth-to-mouth
    N c. switch to mouth-to-nose ventilation
    Y d. turn the patient's body to the side, sweep out the mouth and resume mouth-to-mouth ventilation

844: If a crew member that was ill has died, which code should your message contain?

    N a. MPO
    Y b. MPR
    N c. MPK
    N d. MPJ

927: The extinguishing agent most effective for combating wood fires is __________.

    Y a. water
    N b. carbon dioxide
    N c. foam
    N d. dry chemical

970: During cargo operations, your vessel develops a list due to the center of gravity rising above the transverse metacenter. To correct the list, you should __________.

    N a. shift weight to the high side
    N b. shift weight to the centerline
    Y c. add weight in the lower holds or double bottoms
    N d. remove weight from the lower holds or double bottoms

1023: Providing you are not in a special area, such as the Mediterranean or Red Sea, how many nautical miles from land must you be to throw packing materials that will float into the sea?

    N a. 3 nm
    N b. 6 nm
    N c. 12 nm
    Y d. 25 nm

1055: The signal K4 sent by any method means __________.

    N a. a distance of 4 miles
    N b. a speed of 4 knots
    N c. the wind is from the south
    Y d. "I wish to communicate with you by sound signals"

1178: The lowest temperature required to cause self-sustained combustion of a substance independent of any outside source of ignition is called __________.

    N a. explosive range
    N b. flash point
    Y c. ignition temperature
    N d. combustion temperature

1208: A vessel aground may have negative GM since the __________.

    N a. decrease in KM is equal to the loss of draft
    N b. virtual rise of G is directly proportional to the remaining draft
    N c. lost buoyancy method is used to calculate KM, and KB is reduced
    Y d. displacement lost acts at the point where the ship is aground

1495: A weight of 350 tons is loaded on your vessel 85 feet forward of the tipping center. The vessel's MT1 is 1150 foot-tons. What is the total change of trim?

    N a. 12.93 inches
    N b. 23.75 inches
    Y c. 25.87 inches
    N d. 38.50 inches

1513: Limit switches, winches, falls, etc. must be thoroughly inspected at least every __________.

    N a. 2 months
    N b. 4 months
    N c. 6 months
    Y d. year

1919: A sailing vessel with the wind coming from 050° relative would be __________.

    Y a. close hauled on the starboard tack
    N b. reaching on a starboard tack
    N c. on a broad reach on a port tack
    N d. running before the wind

1923: Except as provided by approved special examinations, each offshore drilling unit must be dry-docked at least once during every __________.

    N a. 12 month period
    N b. 18 month period
    Y c. 24 month period
    N d. 36 month period

1929: Which statement concerning homing signals in the GMDSS is FALSE?

    N a. A homing signal provides a bearing for rescue personnel to follow to the signal's SOURCE.
    Y b. A homing signal is detected by the COSPAS-SARSAT satellites.
    N c. A homing signal cannot be detected by a GPS receiver.
    N d. A homing signal may be transmitted by equipment attached to the survival craft.

2098: The SS AMERICAN MARINER is loaded with the cargo shown. Use the white pages of The Stability Data Reference Book to determine the amount of liquid loading required in the double bottom tanks to meet a one compartment standard. ST-0049

    Y a. 395 tons
    N b. 530 tons
    N c. 750 tons
    N d. 990 tons

2141: How often is a drill on the use of the line throwing appliance required to be held on a mobile offshore drilling unit?

    N a. Once a month
    N b. Once a year
    N c. Once a week
    Y d. Once every three months

2295: All MODU personnel should be familiar with the survival craft's __________.

    Y a. boarding and operating procedures
    N b. maintenance schedule
    N c. navigational systems
    N d. fuel consumption rates

2320: You are attempting to recover a mooring buoy. If you approach the object on the port tack, how would you slow the vessel as you draw near?

    N a. Quickly change to a starboard tack as you reach the object.
    N b. Shift the rudder from port to starboard several times as you reach the object.
    N c. Bring the wind so that it comes over the stern and ease all the sheets.
    Y d. Bring the wind directly over the bow and allow the sails to luff.

2468: What is NOT classified as a flammable liquid?

    N a. Methyl alcohol
    N b. Heptane
    Y c. Mineral spirits
    N d. iso-Hexane

2547: On a MODU crane, the load chart relates the allowable load to the combination of boom length and __________.

    N a. boom angle
    N b. boom strength
    Y c. load radius
    N d. cable strength

2662: A vessel with a large GM will __________.

    N a. have a small amplitude of roll in heavy weather
    N b. tend to ship water on deck in heavy weather
    Y c. be subject to severe racking stresses
    N d. be less likely to have cargo shift

2673: A MODU having continuous closely spaced transverse strength members is __________.

    N a. longitudinally framed
    Y b. transversely framed
    N c. cellular framed
    N d. web framed

2687: As a vessel changes course to starboard, the compass card in a magnetic compass __________.

    N a. first turns to starboard then counterclockwise to port
    N b. also turns to starboard
    Y c. remains aligned with compass north
    N d. turns counterclockwise to port

2771: The angle to which a floating MODU, with a negative initial metacentric height, lies while at rest in still water is the angle of __________.

    N a. trim
    N b. yaw
    N c. heel
    Y d. loll

2829: Aboard small passenger vessels the steering gear, signaling whistle, controls, and communication system shall be tested by the Master __________.

    N a. once a week
    Y b. before getting underway for the day's operation
    N c. at every inspection and reinspection
    N d. at least once in every 48 hours

2943: A virtual rise in the center of gravity of a MODU may be caused by __________.

    N a. filling a partially filled tank
    Y b. using an on board crane to lift a freely swinging heavy object
    N c. emptying a partially filled tank
    N d. transferring pipe from the setback area to the pipe rack

3050: A vessel's drafts are: FWD 14'-04", AFT 15'-08". How much more cargo can be loaded to have the vessel down to the freeboard draft? (Use the information in Section 1, the blue pages, of the Stability Data Reference Book)

    N a. 7280 tons
    Y b. 7879 tons
    N c. 8004 tons
    N d. 8104 tons

3082: On vessels subject to the provisions of 46 CFR Subchapter T, life jackets shall be __________.

    N a. kept locked up at all times when underway
    Y b. stored in convenient places throughout the accommodation spaces
    N c. inaccessible to passengers
    N d. on the topmost deck of the vessel at all times

3116: According the Lifesaving regulations in Subchapter W, fire and abandon ship drills must be held within 24 hours of leaving port if the percentage of the crew that has not participated in drills aboard that particular vessel in the prior month exceeds __________.

    N a. 5%
    N b. 10%
    Y c. 25%
    N d. 40%

3182: What is the minimum number of portable fire extinguishers required on board a 45-foot motorboat having a fixed fire system on board? (Uninspected Vessel Regulations)

    N a. 1 B-I
    Y b. 2 B-I
    N c. 3 B-I
    N d. 4 B-I

3287: A vessel displacing 18,000 tons has a KG of 50 feet. A crane is used to lift cargo weighing 20 long tons from a supply vessel. When lifting, the head of the crane boom is 150 feet above the keel. What is the change in KG?

    Y a. 0.11 foot
    N b. 0.17 foot
    N c. 0.25 foot
    N d. 0.32 foot

3320: If your vessel is required to have a fire ax on board, where should it be located? (small passenger vessel regulations)

    Y a. In or adjacent to the primary operating station
    N b. In below-decks passenger accommodations
    N c. Just outside the engine room access
    N d. In the galley near the stove

3327: A semisubmersible, while floating level, displaces 20,000 long tons. LCB is 3.0 feet forward of amidships. Bulk, weighing 300 long tons, is placed in P-tanks located 40 feet aft of amidships. What is the new LCG?

    N a. 3.64 feet forward of amidships
    N b. 2.45 feet forward of amidships
    Y c. 2.36 feet forward of amidships
    N d. 0.55 foot forward of amidships

3492: Your vessel's existing draft is FWD 17'-03", AFT 18'-09". Using the Guidance Manual for Loading M.V. Grand Haven, determine the new draft if 450 long tons are loaded in No. 16 hatch.

    N a. FWD 16'-11", AFT 19'-04 2/3"
    N b. FWD 17'-01", AFT 18'-11 1/4"
    Y c. FWD 17'-04", AFT 19'-03 3/4"
    N d. FWD 17'-07", AFT 18'-11 1/4"

3500: How should the letter "Z" be pronounced when spoken on the radiotelephone?

    N a. ZEE BR AH
    N b. ZEE ZE
    N c. ZE HE
    Y d. ZOO LOO

3816: When abandoning an OSV, following the launching of the survival craft you should __________.

    N a. plot a course for the nearest land
    N b. take a vote on the direction in which to go
    Y c. stay in the immediate area
    N d. go in one direction until fuel runs out

3910: Your vessel is required to have an impulse-projected line throwing appliance. The auxiliary line must __________.

    N a. be of a light color
    N b. be 250 meters in length
    Y c. have a breaking strength of 9000 lbs
    N d. be made of synthetic material

4021: A towing vessel's fire detection system may be certified to comply with the Coast Guard's towing vessel fire protection regulations by _________ .

    N a. a Coast Guard inspector
    Y b. a registered professional engineer
    N c. the owner or Master of the vessel
    N d. a licensed electrician

4042: How many B-II fire extinguishers must be in the machinery space of a 75-foot long fishing vessel propelled by engines with 1200 brake horsepower?

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

4701: After you activate your emergency position indicating radio beacon, you should __________.

    N a. turn it off for five minutes every half-hour
    N b. turn it off and on at five-minute intervals
    N c. turn it off during daylight hours
    Y d. leave it on continuously

5137: When a floating MODU inclines to an angle slightly greater than the angle of loll, she will __________.

    N a. capsize
    N b. incline further
    N c. flop to the other side
    Y d. return to the angle of loll

5232: Fusible-link fire dampers are operated by __________.

    N a. a mechanical arm outside the vent duct
    N b. electrical controls on the bridge
    Y c. the heat of a fire melting the link
    N d. a break-glass and pull-cable system

6617: On offshore drilling units, sleeping spaces for the regular personnel employed on board may not berth more than __________.

    N a. two persons
    N b. three persons
    Y c. four persons
    N d. five persons

6947: Which record must be retained on board after a report of casualty to a MODU?

    N a. Preventive maintenance log
    Y b. Storage plans
    N c. Oil Record Book
    N d. Repair record book

8155: The moment created by a force of 12,000 tons and a moment arm of 0.25 foot is __________.

    N a. 48,000 ft-tons
    N b. 6,000 ft-tons
    Y c. 3,000 ft-tons
    N d. 0 ft-tons

8161: A semisubmersible, displacing 20,500 long tons, has vertical moments of 1,060,000 foot-long tons. What is the change in KG if 500 long tons are discharged from a VCG of 120 feet?

    N a. 1.22 feet downward
    Y b. 1.71 feet downward
    N c. 1.75 feet downward
    N d. 2.93 feet downward

8397: What is the best indication of the loading of a diesel engine?

    N a. Oil temperature
    N b. Manifold pressure
    Y c. Exhaust gas temperature
    N d. Fuel consumption

8621: What is the transverse shift in the center of gravity if 200 short tons are placed 10 feet to port of the centerline on a MODU with TCG 0.7 foot starboard of the centerline, and the displacement is 9,000 short tons?

    N a. 0.03 foot
    N b. 0.20 foot
    Y c. 0.23 foot
    N d. 0.62 foot

9457: The center of buoyancy is located at the __________.

    N a. geometric center of the waterplane area
    N b. intersection of the vertical centerline and line of action of the buoyant force
    N c. center of gravity of the vessel corrected for free surface effects
    Y d. geometric center of the displaced volume

9535: When stability of a vessel is neutral, the value of GM __________.

    N a. only depends on the height of the center of gravity
    N b. only depends on the height of the metacenter
    N c. is greater when G is low
    Y d. is zero