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.


13: Your liferaft is to leeward of a fire on the water and riding to its sea anchor. You should FIRST __________.


387: If your vessel is equipped with a radiotelephone, what must also be aboard?


485: Cargo hose carried on tank vessels must be designed to withstand the pressure of the shutoff head of the cargo pump or pump relief valve setting, but in no case should it be less than __________.


491: Before starting to hoist provisions, which should be checked?

    N a. Hoist rope is not kinked
    N b. Multiple part lines are not twisted around each other
    N c. The hook is centrally located over the load
    Y d. All of the above

550: The normal tendency for a loaded tanker is to __________.

    N a. hog
    Y b. sag
    N c. have a permanent list
    N d. be very tender

583: The minimum length of the painter for a lifeboat in ocean service is __________.

    N a. 60 fathoms
    N b. the distance from the main deck to the light waterline
    N c. twice the distance from the main deck to the light waterline or 50 feet whichever is greater
    Y d. two times the distance from the boat deck to the light waterline or 50 feet whichever is greater

612: The service life of distress signals must be not more than __________.

    Y a. forty two months from the date of manufacture
    N b. thirty six months from the date of the last inspection
    N c. twenty four months from the date of approval
    N d. twelve months from the date of purchase

801: No person on board any vessel to which Annex V to MARPOL 73/78 applies may discharge garbage of any type when __________.

    N a. less than 12 nautical miles from the United States
    N b. less than 12 nautical miles from nearest land
    Y c. in the navigable waters of the United States
    N d. less than 25 nautical miles from nearest land

901: A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged. It should be __________.

    N a. replaced in its proper location if weight loss is no more than 15%
    N b. replaced in its proper location if weight loss is no more than 25%
    Y c. labeled empty and recharged as soon as possible
    N d. labeled empty and replaced in its proper location regardless of weight

922: An upright vessel has negative GM. GM becomes positive at the angle of loll because the __________.

    N a. free surface effects are reduced due to pocketing
    N b. KG is reduced as the vessel seeks the angle of loll
    Y c. effective beam is increased causing BM to increase
    N d. underwater volume of the hull is increased

967: Gasoline fuel tanks on small passenger vessels must be installed __________.

    Y a. independent of the hull
    N b. on a level higher than the engine
    N c. in a cool and insulated place
    N d. so the fuel line to the engine leads from a shut-off valve at the bottom of the tank

1086: Required lifesaving equipment on existing vessels may be continued in use on the vessel if __________.

    N a. kept on board no more than 2 years
    N b. inspected and serviced every 6 months
    N c. destroyed if more than 5 years old
    Y d. maintained in good and serviceable condition

1183: The engine in a covered lifeboat is fueled with __________.

    N a. leaded gasoline
    N b. unleaded gasoline
    Y c. diesel oil
    N d. liquefied gas

1197: A squeeze-grip type carbon-dioxide portable fire- extinguisher has been partially discharged. It should be __________.

    N a. replaced in its proper location if weight loss is no more than 15%
    N b. replaced in its proper location if weight loss is no more than 25%
    N c. replaced in its proper location regardless of weight
    Y d. labeled empty and recharged as soon as possible

1276: The lights on the outside of the canopy on an inflatable liferaft operate __________.

    N a. by turning the globe clockwise
    N b. by a switch at each light
    N c. by a light sensor
    Y d. automatically when the raft is inflated

1296: Hand holds or straps on the underside of an inflatable liferaft are provided __________.

    Y a. to right the raft if it capsizes
    N b. to carry the raft around on deck
    N c. for crewmen to hang on to
    N d. to hang the raft for drying

1502: A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in __________.

    N a. generators
    Y b. oil drums
    N c. the bridge controls
    N d. combustible metals

1734: Which procedure should be followed when individuals are rescued in cold climates and suffer from hypothermia?

    N a. Give them brandy or other alcoholic stimulation to promote a return to an acceptable body temperature.
    Y b. Move them to a warm room to gradually raise their body temperature.
    N c. Keep them moving to stimulate circulation to raise their body temperature.
    N d. Warm them under an electric blanket to rapidly regain normal body temperature.

1787: Which GMDSS control selection may result in limited receiving range?

    N a. Setting the squelch control to its minimum level
    N b. The power switch is set to the "high" output position resulting in receiver over loading
    Y c. Setting the squelch control to its maximum level
    N d. Setting the channel selection switch midway between channels 6 and 16

1943: Which statement concerning satellite EPIRBs is TRUE?

    Y a. Once activated, these EPIRBs continuously send up a signal for use in identifying the vessel and for determining the position of the beacon.
    N b. The coded signal identifies the nature of the Distress situation.
    N c. The coded signal only identifies the vessel's name and port of registry.
    N d. If the GMDSS Radio Operator does not program the EPIRB, it will transmit default information such as the follow-on communications frequency and mode.

1994: Which kind(s) of broadcasts are available through Safety NET?

    Y a. MSI and messages to pre-defined groups of subscribers
    N b. MSI and vessel traffic lists
    N c. Hourly NOAA weather broadcasts from the NWS
    N d. Coastal weather broadcasts

2091: To inflate a davit launched liferaft you __________.

    N a. initially connect the compressed air nozzle to the inflation tube
    Y b. pull the inflation lanyard
    N c. connect the hand pump to the inflation tube and pump it up
    N d. connect the helium nozzle to the inflation tube

2160: You have approximately 29 tons of fish on deck. What will be the shift in the center of gravity after you shift the fish to the fish hold, a vertical distance of 5 feet? (total displacement is 483 tons)

    Y a. 0.3 foot
    N b. 0.4 foot
    N c. 0.5 foot
    N d. 0.6 foot

2262: What is the Vapor pressure of ethylene oxide at 46 °C?

    N a. 10.9 (psia)
    N b. 38.5 (psia)
    Y c. 48.0 (psia)
    N d. 15.2 (psia)

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

2366: What type of vent is required on a barge transporting No. 6 fuel oil?

    Y a. Gooseneck vents fitted with flame screens
    N b. Pressure-vacuum
    N c. Branch vent line
    N d. Vent header

2450: During transfer operations, ethyl chloride spills into the water. According to the Chemical Data Guide, the ethyl chloride will boil off if the water temperature is above __________.

    N a. 46°F
    Y b. 54°F
    N c. 60°F
    N d. 68°F

2697: In order to withstand fluid head pressure on a MODU, stiffeners are often attached to the bulkhead __________.

    N a. penetrations
    Y b. plating
    N c. framing
    N d. brackets

2816: When a lifeline is required to be attached to a ring life buoy it must be at least __________. (small passenger vessel regulations)

    N a. 30 feet long
    Y b. 60 feet long
    N c. 90 feet long
    N d. 120 feet long

2836: The remote control for a fixed fire extinguishing system should be __________. (Uninspected Vessel Regulations)

    Y a. painted red and labeled
    N b. concealed from the crew
    N c. protected by plexiglas
    N d. padlocked

2849: A vessel would be referred to as "stiff" when the weight of the cargo is __________.

    N a. evenly distributed vertically and the double bottoms are full
    N b. concentrated low and the double bottoms are empty
    Y c. concentrated low and the double bottoms are full
    N d. concentrated high and the double bottoms are empty

3121: To prevent the spread of fire by conduction you should __________.

    Y a. cool the bulkheads around the fire
    N b. remove combustibles from direct exposure
    N c. close all openings to the area
    N d. shut off all electric power

3228: A fuel line breaks, sprays fuel on the hot exhaust manifold, and catches fire. Your FIRST action should be to __________.

    N a. batten down the engine room
    N b. start the fire pump
    N c. apply carbon dioxide to the fire
    Y d. shut off the fuel supply

3460: How should the letter "T" be pronounced when spoken on the radiotelephone?

    N a. TEE
    N b. TA HO
    Y c. TANG GO
    N d. TU TU

3609: General arrangement plans shall be permanently exhibited on all passenger vessels of at least __________.

    N a. 200 GT and over
    N b. 500 GT and over
    Y c. 1000 GT and over
    N d. 1500 GT and over

3649: A man aboard a vessel, signaling by raising and lowering his outstretched arms to each side, is indicating __________.

    N a. danger, stay away
    N b. all is clear, it is safe to pass
    N c. all is clear, it is safe to approach
    Y d. a distress signal

3692: Before CPR is started, you should __________.

    Y a. establish an open airway
    N b. treat any bleeding wounds
    N c. insure the victim is conscious
    N d. make the victim comfortable

3732: Heat exhaustion is caused by excessive __________.

    N a. loss of body temperature
    Y b. loss of water and salt from the body
    N c. gain in body temperature
    N d. intake of water when working or exercising

3936: After abandoning ship which action should be taken IMMEDIATELY upon entering a liferaft?

    N a. Open equipment pack.
    N b. Issue anti-seasickness medicine.
    Y c. Get clear of the ship.
    N d. Dry the liferaft floor and inflate.

4250: A bulk freighter 580 ft. in length, 60 ft. beam, with a waterplane coefficient of .84 is floating in salt water at a draft of 21 ft. How many long tons would it take to increase the mean draft 1"?

    N a. 65.1
    Y b. 69.6
    N c. 74.3
    N d. 76.8

4402: The SS AMERICAN MARINER has on board 6584 tons of cargo with an LCG-FP of 277.84 feet. See the distribution of the cargo to be loaded. Use the white pages of The Stability Data Reference Book to determine the final LCG-FP of the cargo. ST-0161

    N a. LCG-FP 271.2 feet
    N b. LCG-FP 272.1 feet
    N c. LCG-FP 273.6 feet
    Y d. LCG-FP 274.6 feet

4663: The COASTAL DRILLER is loaded as shown in the Sample Load Form #1 (Rig Move). If the contents of the #7 drill water tank are discharged, what would be the new TCG?

    N a. -0.15 foot
    N b. 0.00 foot
    Y c. 0.15 foot
    N d. 0.29 foot

5083: When a mobile offshore drilling unit on the waters of the U.S. Outer Continental Shelf has more than one obstruction light, the lights must be operated to flash __________.

    Y a. at the same time
    N b. in sequence at intervals of five seconds
    N c. in sequence at intervals of ten seconds
    N d. in sequence at intervals of fifteen seconds

5701: The vessel motion that can significantly affect mooring line tensions on a MODU is __________.

    N a. roll
    N b. yaw
    Y c. surge
    N d. pitch

5925: When fire pumps are used for other than firefighting service, each pipe connecting the other service (except for branch lines used for deck washing) must have a __________.

    N a. check valve installed in the line
    Y b. shut off valve at a manifold near the pump
    N c. quick disconnect union within ten feet of the pump
    N d. regulator in the line set at 125 psi

5962: Your drafts are: FWD 25'-09", AFT 28'-03". Use the blue pages of the Stability Data Reference Book to determine the location of the center of flotation relative to amidships.

    N a. 2.6 feet forward
    N b. 2.1 feet forward
    Y c. at the center of flotation
    N d. 0.8 foot aft

6543: Corrosive liquids and acids should have what kind of label?

    N a. Skull and crossbones
    N b. Yellow
    N c. Red
    Y d. White

7713: Your vessel is listing because of a negative GM. To lower G below M, you should __________.

    N a. deballast
    N b. transfer weight to the high side
    N c. ballast on the high side
    Y d. add weight symmetrically below G

7951: What is the chief advantage of an SCR or AC-DC system over a straight DC system for powering drilling rig machinery?

    N a. Commutators are eliminated.
    N b. Several machines can be operated from a DC bus.
    N c. SCR systems are simpler.
    Y d. Required power can be drawn from a common AC bus.

8307: The sense of smell cannot be depended upon to detect H2S because __________.

    N a. it has a smell similar to petroleum products
    N b. hydrogen sulfide gas is odorless
    Y c. the sense of smell is deadened by the gas
    N d. it is better to rely on eye irritation as a detector

8387: On a MODU, the possibility of a blowout makes which type of diesel engine shutdown desirable?

    N a. Overspeed trip
    Y b. Air inlet shut-off valve
    N c. Water injector
    N d. Fuel cutoff valve

8441: The regulations regarding Oil Record Books do not apply to MODU's that __________.

    N a. are on an international voyage
    N b. are on a voyage of more than 24 hours
    N c. have a valid International Oil Pollution Prevention Certificate
    Y d. have a valid National Pollutant Discharge Elimination System permit

8645: In the analysis of damaged stability for the DEEP DRILLER, disregarded are the beneficial effects of moorings and __________.

    N a. horizontal area of the platform
    N b. vertical area of the platform
    Y c. countermeasures
    N d. wind strength

9241: The DEEP DRILLER, while loaded as shown in the Sample Load Form #5, discharges 137.88 long tons. The resulting trim by the stern is 3 feet and list to port is 2 feet. What is the draft at the starboard forward draft mark?

    Y a. 41 feet 6 inches
    N b. 42 feet 6 inches
    N c. 43 feet 6 inches
    N d. 44 feet 0 inches

9347: CO2 cylinders must be recharged when the weight of the charge in the cylinder is less than what percent of the stamped full weight of the charge?

    N a. 80%
    N b. 85%
    Y c. 90%
    N d. 95%

9381: If the liferaft capsizes, all personnel should leave the raft and __________.

    N a. climb onto the bottom
    N b. swim away from the raft
    Y c. right the raft using the righting strap
    N d. inflate the righting bag

9385: When personnel are lifted by a helicopter from an inflatable liferaft, the personnel on the raft should __________.

    Y a. deflate the floor of the raft to reduce the danger of the raft overturning
    N b. inflate the floor of the raft to provide for additional stability
    N c. remove their life preservers to prepare for the transfer
    N d. take in the sea anchor to prevent fouling of the rescue sling

9513: In the presence of external forces, the center of buoyancy of an inclined vessel is vertically aligned with the __________.

    N a. center of gravity
    Y b. metacenter
    N c. center of flotation
    N d. keel

9606: You are fighting a Class B fire with a portable dry chemical extinguisher. The discharge should be directed __________.

    N a. over the top of the fire
    N b. to bank off a bulkhead onto the fire
    Y c. at the seat of the fire, starting at the near edge
    N d. at the main body of the fire

9672: When fighting a large fire on your vessel and attacking it from ABOVE the space on fire, it is important to __________.

    N a. not rotate personnel, as the consistent attack can extinguish the fire quickly.
    Y b. stand erect, to avoid the heat of the deck
    N c. station personnel on the hot deck, immediately above the fire, to observe for its potential spread
    N d. All of the above