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.


49: You are fighting a fire in the electrical switchboard in the engine room. You should secure the power, then __________.


56: The required number and type of hand portable fire extinguishers for staterooms on cargo vessels is __________.


204: When signaling by flashing light, a correctly received repetition of a signal is acknowledged by the signal __________.


356: The number of pounds of carbon dioxide required for each cargo space on a cargo vessel is equal to __________.

    N a. the gross volume of the space in cubic feet divided by 100
    N b. one pound of CO2 per cubic foot of space
    N c. one pound of CO2 per square foot of deck area
    Y d. the gross volume of the space in cubic feet divided by 30

521: On a vessel of 6,000 tons displacement there are two slack tanks of carbon tetrachloride (SG 1.6). Each tank is 40 feet long and 25 feet wide. What is the reduction in metacentric height due to free surface with the vessel in sea water (SG 1.025)?

    N a. .39 ft
    Y b. .77 ft
    N c. .88 ft
    N d. .95 ft

529: You are ordering ship's stores. Which statement is TRUE?

    Y a. Up to five gallons of a flammable liquid may be stowed in the engine room.
    N b. All stores of line, rags, linens and other similar type stores must be certified by UL as being fire retardant.
    N c. Cylinders containing compressed gasses must be constructed and tested in accordance with the Bureau of Standards.
    N d. All distress flares when received must be stored in the portable magazine chest.

791: During a training exercise a submarine indicating that a torpedo has been fired will send up smoke from a float. The smoke's color will be __________.

    Y a. black
    N b. red
    N c. orange
    N d. yellow

838: A class C fire would be burning __________.

    N a. fuel oil
    N b. wood
    N c. celluloid
    Y d. electrical insulation

873: On small passenger vessels which parts of a water-cooled gasoline or diesel engine must be water-jacketed and cooled?

    N a. The engine's head
    N b. The block
    N c. The exhaust manifold
    Y d. All of the above

873: On small passenger vessels which parts of a water-cooled gasoline or diesel engine must be water-jacketed and cooled?

    N a. The engine's head
    N b. The block
    N c. The exhaust manifold
    Y d. All of the above

907: An advantage of a dry chemical over a carbon dioxide fire extinguisher is its __________.

    Y a. greater range
    N b. effectiveness on all types of fires
    N c. cleanliness
    N d. All of the above

1107: In the production of chemical foam by a continuous-type generator __________.

    N a. the maximum water pressure to be used is 50 psi
    Y b. the speed of foam production is slower at lower water temperatures
    N c. each pound of foam powder produces about 800 gallons of chemical foam
    N d. fresh water only should be used

1396: If you find an inflatable liferaft container with steel bands around the case, you should __________.

    N a. tell the Master
    Y b. leave the bands in place
    N c. tell the Mate
    N d. remove the bands yourself

2045: How often does a coast radio station that regularly broadcasts traffic lists transmit the list?

    N a. As often as is deemed necessary to effect delivery
    Y b. No less often than every four hours
    N c. Only on an as-needed basis
    N d. Once per 24-hour period

2129: Which of the following statements relating to AMVER (Automated Mutual-assistance Vessel Rescue) is TRUE?

    N a. The AMVER system does not reduce the time lost for vessels responding to calls for assistance.
    N b. An AMVER participant is not relieved of the obligation to give 24 hour advance notice to the U.S. Coast Guard before entering a U.S. port from offshore.
    Y c. There is no cost to the ship or owner for messages sent within the AMVER system.
    N d. An AMVER participant is under greater obligation to render assistance to a vessel in distress than a non-participant.

2233: You are underway when a fire breaks out in the forward part of your vessel. If possible, you should __________.

    N a. call for assistance
    N b. abandon ship to windward
    N c. keep going at half speed
    Y d. put the vessel's stern into the wind

2273: During an abandonment or drill, the first person to arrive at the survival craft should __________.

    N a. pass out food and water to personnel
    N b. open the doors and start the sprinkler system
    N c. activate the emergency release handle
    Y d. open the doors and prepare the craft for boarding

2316: The flammable limits for motor gasoline are __________.

    N a. 5.3% to 7% mixture in air
    N b. 0.9% to 5.9% mixture in air
    Y c. 1.4% to 7.6% mixture in air
    N d. 2.5% to 12.8% mixture in air

2333: You are sailing into a harbor with the intention of picking up your mooring. There is no current. Which statement(s) is(are) TRUE?

    Y a. On a ketch, you will most likely strike the jib before making your final approach.
    N b. On a yawl, the last sail you will strike after you have picked up the mooring will normally be the mainsail.
    N c. On a sloop, if your initial approach is to be downwind you could slow your approach by striking the jib and letting your main sheet out as far as it will go.
    N d. All of the above are correct.

2336: While loading bulk oil in a barge, you notice oil on the water alongside. What should you do FIRST?

    N a. Search the vessel for leaks.
    N b. Notify the terminal superintendent.
    Y c. Stop loading.
    N d. Notify the Coast Guard.

2342: Your vessel's drafts are: FWD 13'-11", AFT 11'-09". 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)

    Y a. 9069 tons
    N b. 9172 tons
    N c. 9207 tons
    N d. 9244 tons

2488: If a crew member is exposed to phenol by way of skin or eye contact, you should IMMEDIATELY __________.

    N a. administer oxygen
    N b. treat victim for shock
    Y c. flush skin and eyes with water
    N d. give victim stimulant

2563: The hoist line primarily used for lifting personnel on MODU cranes is called the __________.

    N a. personnel line
    Y b. whip line
    N c. main hoist line
    N d. pendant

2569: Your vessel's drafts are: FWD 22'-03", AFT 22'-09"; and the KG is 24.4 feet. What is the righting moment when the vessel is inclined to 15°? (Use the reference material in Section 1, the blue pages, of the Stability Data Reference Book)

    N a. 4,176 foot-tons
    Y b. 5,196 foot-tons
    N c. 7,076 foot-tons
    N d. 9,003 foot-tons

2601: In MODU construction, a greater number of watertight bulkheads results in __________.

    Y a. increased capacity to set flooding boundaries
    N b. decreased capacity to set flooding boundaries
    N c. reduced compartmentation
    N d. greater deck load capacity

2882: Whenever an inspected vessel is dry-docked for major repairs, the person in charge of the vessel, the owner or the agent should report this to the __________. (small passenger vessel regulations)

    Y a. Officer in Charge, Marine Inspection
    N b. National Cargo Bureau, Inc.
    N c. American Boat and Yacht Council, Inc.
    N d. All of the above

2978: Which equipment is not required for a life float? (small passenger vessel regulations)

    N a. Paddles
    N b. Light
    N c. Painter
    Y d. Compass

3060: A vessel's drafts are: FWD 19'-00", AFT 17'-02". 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. 5928 tons
    N b. 6016 tons
    Y c. 6149 tons
    N d. 6242 tons

3075: Although KG for a MODU in lightweight is relatively high, the vessel is stiff because __________.

    N a. KM is small
    Y b. KM is high
    N c. BL is small
    N d. KB is large

3269: What is the purpose of the liferaft's hydrostatic release?

    Y a. To release raft automatically as the ship sinks
    N b. To inflate the raft automatically
    N c. To test rafts hydrostatically
    N d. None of the above

3343: The righting moment created by a MODU that displaces 15,000 tons with a righting arm (GZ) of 0.02 foot is __________.

    N a. 3,000 foot-tons
    N b. 750 foot-tons
    N c. 600 foot-tons
    Y d. 300 foot-tons

3361: 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

3411: The SS AMERICAN MARINER has the liquid loading shown. Use the white pages of The Stability Data Reference Book to determine the KG of the liquid load. ST-0127

    Y a. 7.9 feet
    N b. 7.3 feet
    N c. 6.4 feet
    N d. 4.3 feet

3453: Your rescue craft is broken down and rolling in heavy seas. You can reduce the possibility of capsizing by __________.

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

3560: How should the number "4" be pronounced when spoken on the radiotelephone?

    N a. QUAD-ROS-FOOR
    N b. NUM-ERL-FOUR
    N c. NUMB-ER-FOWER
    Y d. KAR-TAY-FOWER

3711: Changing rescuers while carrying out artificial respiration should be done __________.

    Y a. without losing the rhythm of respiration
    N b. only with the help of two other people
    N c. by not stopping the respiration for more than 5 minutes
    N d. at ten minute intervals

3713: The DEEP DRILLER is loaded as shown in the Sample Load Form #5 (Survival) when an unexpected slowly increasing starboard list and bow down trim occurs. A leak in 1S is found. By deballasting from ballast tanks 2S and 3S, the inclination slowly decreases. The increase in the transverse free surface corrections is __________.

    N a. 1.25 feet
    N b. 0.90 foot
    N c. 0.84 foot
    Y d. 0.22 foot

3770: The abandon ship signal is __________.

    N a. a continuous ringing of general alarm bells for at least 10 seconds
    N b. a continuous ringing of the general alarm, and sounding of the ship's whistle
    Y c. more than 6 short blasts and 1 long blast of the ship's whistle and the same signal on the general alarm bells
    N d. a continuous sounding of the ship's whistle

3826: You have abandoned ship and are in charge of a liferaft or survival craft. How much water per day should you permit each person to have after the first 24 hours?

    N a. 1 can
    Y b. 1 pint
    N c. 1 quart
    N d. 1 gallon

3911: For the DEEP DRILLER, it is recommended that the number of lower-hull ballast tanks with free surfaces be less than __________.

    N a. 2
    N b. 4
    Y c. 6
    N d. 8

3999: Which item may be substituted for, in the fireman's outfit, on a cargo vessel?

    N a. fire ax
    N b. flashlight
    N c. rigid helmet
    Y d. flame safety lamp

4002: A combustible gas indicator will NOT operate correctly when the __________.

    N a. hydrocarbon content of the atmosphere is less than the U.E.L
    Y b. atmosphere is deficient in oxygen
    N c. distance between the operator and the compartment to be tested is greater than 50 feet
    N d. All of the above

4006: The SS AMERICAN MARINER arrived in port with drafts of: FWD 18'-06", AFT 20'-10". Cargo was loaded and discharged as indicated. Use sheet 2 in the white pages of the Stability Data Reference Book to determine the final drafts. ST-0152

    N a. FWD 18'-11", AFT 20'-02"
    N b. FWD 19'-01", AFT 20'-00"
    N c. FWD 19'-03", AFT 19'-10"
    Y d. FWD 19'-05", AFT 19'-08"

4158: Your vessel's existing draft is FWD 19'-02", AFT 20'-10". Using the Guidance Manual for Loading M.V. GRAND HAVEN, determine the new draft if 170 long tons are discharged from No. 8 hatch.

    N a. FWD 19'-00.4", AFT 20'-08.6"
    Y b. FWD 18'-10.8", AFT 20'-10.4"
    N c. FWD 19'-03.4", AFT 20'-05.6"
    N d. FWD 19'-05.4", AFT 20'-03.4"

4685: What is the change in transverse moments for the Coastal Driller if 2.5 feet of drill water is discharged from drill water tank #23?

    Y a. 1,671 ft-kips
    N b. -161 ft-kips
    N c. -1,800 ft-kips
    N d. -2,982 ft-kips

5863: If a MODU under tow starts jumping on its tow line, the most appropriate action to alleviate the condition is to __________.

    N a. change course
    N b. slow down
    N c. heave to
    Y d. adjust tow line length

6675: According to the MODU regulations, the capacity of a liferaft is required to be marked __________.

    N a. on the Muster List ("Station Bill")
    Y b. on a sign next to the liferaft
    N c. on the Certificate of Inspection
    N d. in the Operations Manual

6724: In a water tube marine boiler, what protects the superheater tubes from the fires of combustion?

    N a. Water-wall tubes
    N b. Downcomers
    Y c. Screen tubes
    N d. Water drums

6767: A life preserver or buoyant work vest is required to be worn on a MODU when a person is __________.

    N a. working on the rig floor
    Y b. working over water
    N c. working on the pipe racks
    N d. operating line throwing equipment

7405: VHF Channel 6 is used exclusively for what kind of communications?

    N a. Radio checks and time checks
    Y b. Inter-vessel safety and search and rescue
    N c. Working with helicopters
    N d. Radio direction finding

7595: For a vessel inclined by the wind, multiplying the buoyant force by the horizontal distance between the lines of action of the buoyant and gravity forces gives the __________.

    Y a. righting moment
    N b. vertical moment
    N c. longitudinal moment
    N d. transverse moment

7663: Subtracting KG from KM yields __________.

    N a. BM
    Y b. GM
    N c. GZ
    N d. KG

8222: Which will improve stability?

    N a. Closing watertight doors
    Y b. Pumping the bilges
    N c. Loading cargo on deck
    N d. Consuming fuel from a full tank

8367: How would the exhaust of a properly operating diesel engine appear?

    N a. Light blue haze
    N b. Light brown haze
    N c. Light gray haze
    Y d. Perfectly clear

8421: If an engine shuts down due to high jacket water temperature, what action should be taken?

    N a. Open crankcase explosion covers
    Y b. Allow engine to cool gradually
    N c. Slowly add cool water to the expansion tank
    N d. Back flush the cooling water system

8551: On offshore drilling units, each fire station is required to be fitted with at least one spanner and at least one __________.

    N a. fire axe
    Y b. hose rack
    N c. sandbag
    N d. scupper

8701: The DEEP DRILLER is loaded as shown in Sample Load Form #4 (Drilling). While the unit is deballasting, starboard valve 19 fails in the closed position. You may deballast from tank 9S by pumping from tank 8S by opening valves 20 and __________.

    N a. 35
    N b. 21
    Y c. 18
    N d. 17

8737: The DEEP DRILLER is loaded as shown in the Sample Load Form #4 (Drilling). What would be the weight of the mud in pit #4 if the mud weight was changed from 16 to 14 pounds per gallon?

    N a. No change
    Y b. 93.34 long tons
    N c. 121.91 long tons
    N d. 135.13 long tons

8917: The DEEP DRILLER is loaded as shown in Sample Load Form #4 (Drilling). While the unit is deballasting, starboard valve 17 fails in the closed position. You may deballast from tank 8S by pumping from tank 9S and opening valves 18 and __________.

    N a. 35
    N b. 21
    Y c. 20
    N d. 17

9121: The blocking or absence of fire dampers can cause __________.

    N a. the accumulation of explosive gases
    N b. faster cooling of the fire
    Y c. the fire to spread through the ventilation system
    N d. fixed foam systems to be ineffective