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.


103: You have just abandoned ship and boarded a raft. After the raft is completely inflated you hear a whistling noise coming from a safety valve. You should __________.


123: If you are forced to abandon ship in a lifeboat, you should __________.


190: Which technique could be used to give a more comfortable roll to a stiff vessel?


315: The maximum number of passengers a "T-Boat" may carry __________.

    Y a. is stated on the vessel's Certificate of Inspection
    N b. is the number authorized in the Navigation Rules
    N c. depends on the number of lifejackets you carry
    N d. is the number authorized by your license

386: On vessels subject to 46 CFR Subchapter T, Certification Expiration Date Stickers __________.

    N a. are issued along with a valid Certificate of Inspection (COI) to indicate the date the COI expires
    N b. must be readily visible to each passenger prior to boarding and to patrolling Coast Guard law enforcement personnel
    N c. must be placed on glass or other smooth surfaces where they may be removed without damage to the vessel
    Y d. All of the above

448: Treatment of frostbite includes __________.

    N a. rubbing affected area with ice or snow
    N b. rubbing affected area briskly to restore circulation
    N c. wrapping area tightly in warm cloths
    Y d. warming exposed parts rapidly

453: You must shift a weight from the upper 'tween deck to the lower hold. This shift will __________.

    N a. make the vessel more tender
    Y b. make the vessel stiffer
    N c. increase the rolling period
    N d. decrease the metacentric height

578: When fighting fires in spaces containing bottles of LPG (liquefied petroleum gas), you should __________.

    N a. attempt to isolate the fire from the LPG
    Y b. cool the bottles or remove them from the fire area
    N c. see that the valves on all LPG bottles are closed
    N d. place insulating material over the bottles

867: Cargo vessels being navigated, and fitted with emergency lighting and power systems, shall have their emergency systems tested at least once __________.

    N a. a month
    Y b. in each week
    N c. in every 6 months
    N d. in every 12 months

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

987: Which extinguishing agent will cool down a heated bulkhead in the least amount of time?

    N a. Water stream
    Y b. Water fog or spray
    N c. Steam
    N d. Dry chemical

995: If you receive a message "A243" by any method of signaling, it would be referring to __________.

    Y a. bearing
    N b. altitude
    N c. diving
    N d. speed

1127: Compared to the amount of concentrated foam liquid used, the amount of low expansion mechanical foam produced is __________.

    N a. 97 times greater
    N b. 94 times greater
    Y c. 10 times greater
    N d. 2 times greater

1156: Which statement is TRUE concerning the testing of the line-throwing appliance?

    N a. It shall be fired at least once in every three months.
    Y b. A drill in its use shall be held once in every 3 months.
    N c. Drills shall be held quarterly and it shall be fired annually.
    N d. No drills are required.

1161: You are approaching another vessel and see that she has the signal flag "A" hoisted. What should you do?

    N a. Give the vessel a wide berth as she is carrying dangerous goods.
    N b. Attempt to call the vessel on VHF radiotelephone because she is disabled.
    N c. Stop your vessel instantly.
    Y d. Slow your vessel and keep well clear because she has a diver down.

1204: Generally, when lifting an inflatable liferaft back aboard ship you would use the __________.

    Y a. towing bridle
    N b. main weather cover
    N c. external lifelines
    N d. righting strap

1304: The painter of an inflatable liferaft should be __________.

    N a. free running on the deck
    N b. faked out next to the case
    Y c. secured to a permanent object on deck
    N d. stowed near the raft

1310: Frapping lines are fitted to lifeboat davits to __________.

    Y a. reduce the swinging of the lifeboat as it is being lowered from the embarkation level
    N b. secure the lifeboat in the davits when in the stowed position
    N c. hold the lifeboat to the ship's side until the tricing lines are passed
    N d. be used as a safety line in an emergency

1348: Dry chemical fire extinguishers are effective on which type(s) of fire?

    N a. Burning oil
    N b. Electrical
    N c. Paint
    Y d. All of the above

1351: While operating off the coast of Greece, a seaman is injured. What indicator should be in the preamble of a radio telegram asking for medical advice from a Greek station?

    Y a. RADIO MEDICAL
    N b. DH MEDICO
    N c. MEDICO ELLAS
    N d. MAYDAY

1374: Puncture leaks in the lower tubes or bottom of an inflatable liferaft should FIRST be stopped by using __________.

    Y a. sealing clamps
    N b. repair tape
    N c. a tube patch
    N d. sail twine and vulcanizing kit

1462: When authorized to use chemical agents on an oil spill they would __________.

    N a. absorb the oil for easy removal
    N b. dissolve the oil in the water
    Y c. facilitate the removal of the pollutant from the water
    N d. sink the oil

1478: There is a fire in the crew's quarters of your vessel. You should __________.

    N a. ventilate the quarters as much as possible
    N b. prepare to abandon ship
    Y c. close all ventilation to the quarters if possible
    N d. attempt to put the fire out yourself before sounding the alarm

1529: Under the Pollution Regulations, garbage disposal records must be kept __________.

    N a. until the end of the voyage
    N b. until the next Coast Guard inspection
    N c. one year
    Y d. two years

1634: To prevent the spread of fire by convection you should __________.

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

1677: After an engine is started you should __________.

    N a. increase engine speed to insure adequate flow of oil to all parts of the engine
    N b. pay no attention unless there are unusual noises from the engine
    Y c. check operating pressures and temperatures, and check for leaks
    N d. run the engine at idle until the temperature has increased

1725: The most effective treatment for warming a crew member suffering from hypothermia is __________.

    N a. running or jumping to increase circulation
    N b. raising body temperature rapidly by placing hands and feet in hot water
    Y c. bundling the body in blankets to rewarm gradually
    N d. laying prone under heat lamps to rewarm rapidly

1740: Tank vessel inerting refers to __________.

    N a. the introduction of inert gas into a tank with the object of reducing the oxygen content to below 8% by volume
    N b. the introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volume
    N c. the introduction of inert gas into a cargo tank during cargo discharge to replace the volume of discharged cargo
    Y d. All of the above

1844: Your vessel displaces 368 tons and measures 96'L x 28'B. You ship a large wave on the after deck. What is the reduction to GM due to free surface before the water drains overboard, if the after deck measures 42'L x 28'B and the weight of the water is 36 tons?

    N a. 4.98 feet
    N b. 5.21 feet
    Y c. 5.43 feet
    N d. 5.67 feet

2634: Use the floodable length curve in Section 1, the blue pages, of the Stability Data Reference Book. If the curve represents 45 percent permeability and number 4 hold floods, the vessel will sink if the permeability exceeds what percent?

    N a. 40
    N b. 48
    N c. 53
    Y d. 60

2700: According to the regulations, what fire safety control feature is required in quick-closing shut off valves?

    N a. Electrical cut off switch
    Y b. A fusible link
    N c. Manual cut off switch
    N d. A water spray actuator

2726: Your vessel's drafts are FWD 19'-02", AFT 23'-10". Use the information in Section 1, the blue pages, of the Stability Data Reference Book to determine the final drafts if 98 tons of fuel is loaded 116 feet forward of amidships.

    N a. FWD 19'-04", AFT 23'-06"
    N b. FWD 19'-07", AFT 23'-04"
    N c. FWD 19'-09", AFT 23'-01"
    Y d. FWD 19'-09", AFT 23'-06"

3081: A person who observes an individual fall overboard from an OSV should __________.

    N a. immediately jump into the water to assist the individual
    Y b. call for help and keep the individual in sight
    N c. run to the radio room to send an emergency message
    N d. go to the control room for the distress flares

3209: In the illustration shown, the floating sheath knife is indicated as item number __________. (D014SA )

    Y a. 2
    N b. 8
    N c. 13
    N d. 16

3788: When you hear three short blasts on the ship's whistle and the same signal on the general alarm bells, you __________.

    N a. are required to be at your liferaft
    Y b. are dismissed from drills
    N c. should point to the man overboard
    N d. should start the fire pump

3866: Each distress signal and self-activated smoke signal must be replaced not later than the marked date of expiration, or not more than how many months from the date of manufacture?

    N a. 48 months
    Y b. 42 months
    N c. 36 months
    N d. 30 months

3931: Aboard the DEEP DRILLER, to use the drill water pump to supplement the bilge pumps, it is necessary to open valves 26 and __________.

    N a. 41
    N b. 29
    Y c. 28
    N d. 25

4070: Motor-propelled lifeboats are required to be fitted with which of the following?

    Y a. Compartments for the storage of canned drinking water
    N b. Ballast tanks to prevent the boat from capsizing
    N c. An air starter on the diesel engine
    N d. Auxiliary mechanical propulsion (Fleming gear)

4280: Your drafts are: FWD 6'-02", AFT 6'-06". From past experience, you know that the vessel will increase her draft 1 inch for every 5 tons loaded. There is rig water on board and 15 tons of deck cargo. How many more tons of cargo can legally be loaded and still maintain the same trim? (D037DG )

    N a. none
    Y b. 5 tons
    N c. 10 tons
    N d. 20 tons

4346: The EPIRB on board your vessel is required to be tested __________.

    N a. weekly
    Y b. monthly
    N c. quarterly
    N d. yearly

4573: The total leg load reactions on an independent leg, self-elevating unit include static and __________.

    Y a. environmental loading
    N b. variable loading
    N c. fixed loading
    N d. basic loading

4658: You are scheduled to load 3900 tons of cargo, 45 tons of crew effects and stores and 259 tons of fuel. Use the blue pages of the Stability Data Reference Book to determine the vessel's mean draft in fresh water.

    N a. 18'-06"
    N b. 18'-02"
    Y c. 17'-11"
    N d. 17'-08"

5085: A mobile offshore drilling unit must display obstruction lights when it is on the waters over the Outer Continental Shelf and is __________.

    N a. under tow
    Y b. fixed to the seabed
    N c. underway
    N d. All of the above

5283: The DEEP DRILLER suffers minor flooding of the starboard pump room while in transit. If both starboard bilge pumps fail to dewater the pump room, you may use __________.

    Y a. starboard drill water pump
    N b. starboard saltwater service pump
    N c. starboard ballast pumps
    N d. port ballast pumps and crossover system

5302: The SS AMERICAN MARINER is ready to bunker with drafts of FWD 17'-05", AFT 19'-07". After all bunkers are on board, soundings indicate the tonnages shown. Use the white pages of The Stability Data Reference Book to determine the free surface correction. ST-0175

    N a. 0.62 foot
    N b. 0.80 foot
    N c. 0.85 foot
    Y d. 0.99 foot

5481: A common means of connecting shots of anchor chain in the field is to use a __________.

    N a. sprocket
    Y b. Kenter link
    N c. swivel
    N d. end shackle

5585: Cable tension for catenary calculations is taken at the __________.

    N a. chain locker
    Y b. fairlead
    N c. anchor
    N d. contact point of chain with seabed

5955: After using a CO2 extinguisher on a MODU, it should be __________.

    N a. put back in service if some CO2 remains
    N b. hydrostatically tested
    N c. retagged
    Y d. recharged

6124: On a vessel of 7000 tons displacement, a tank 35 ft. long, 30 ft. wide and 4 ft. deep is half filled with fuel oil (S.G. 0.962) while the vessel is floating in saltwater (S.G. 1.026). What is the free surface constant for this tank?

    Y a. 2,109
    N b. 25,974
    N c. 31,328
    N d. 909,090

6274: You are fighting a class "B" fire with a portable dry chemical extinguisher. The discharge should be directed __________.

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

6455: Most drill ships and barges have a walled opening below the derrick, open to the water's surface and through which various drilling tools can pass down to the sea floor called a __________.

    Y a. moon pool
    N b. spider deck opening
    N c. pontoon
    N d. keyway

6853: Regulations require that line throwing equipment on mobile offshore drilling units be tested at regular intervals. What entry should be made in the logbook?

    N a. No entry is required unless it is an official logbook.
    N b. An entry is required only if there is a failure.
    Y c. Only the date of the test
    N d. The name of the person making the test

6908: Topside icing decreases vessel stability because it is usually off-center and __________.

    N a. increases displacement
    Y b. increases the height of the center of gravity
    N c. increases draft
    N d. reduces the pocketing of free surface

6945: Which record must be retained on board after a report of casualty to a mobile offshore drilling unit?

    N a. Oil Record Book
    N b. Chart catalogs
    Y c. Personnel list
    N d. Hull report

8054: A thrust block is designed to __________.

    N a. transmit the thrust of the engine to the propeller
    Y b. transmit the thrust of the propeller to the vessel
    N c. absorb the shock of wave pressure at the bow
    N d. be placed between the engines and the foundation to absorb the vibration

8341: Clean air standards referred to as "Grade D" apply to compressed air for use in __________.

    N a. high pressure fluid accumulators
    N b. driving air-powered plunger pumps
    Y c. filling open-circuit breathing systems
    N d. bladder-type accumulators

8347: All diesel engines are classified as __________.

    N a. four cycle
    Y b. compression ignition
    N c. vacuum ignition
    N d. external combustion

8763: After deploying the anchor, a permanent chain chaser is __________.

    N a. removed from the anchor chain
    N b. connected to a buoy at the anchor
    Y c. stripped back to the rig and secured
    N d. connected to a buoy halfway down the chain

9483: A tank which is NOT completely full or empty is called __________.

    N a. pressed
    Y b. slack
    N c. inertial
    N d. elemental

9704: Which of the following statements is/are TRUE in regard to Ro-Ro vessels' spaces which are "specially suitable for vehicles"?

    N a. The spaces shall be fitted with an approved fire or smoke detecting system.
    N b. The spaces shall be fitted with an approved fixed fire extinguishing system.
    N c. The Commandant may permit the installation of an approved water sprinkler extinguishing system.
    Y d. All of the above