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.


92: The liquid mud tanks on your vessel measure 24'L by 16'B by 8'D. The vessel's displacement in fresh water is 864 tons and the specific gravity of the mud is 1.47. What is the reduction in GM due to 2 of these tanks being slack?


126: Which portable fire extinguisher is classified as a type B-III extinguisher?


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


548: A shipmate chokes suddenly, cannot speak, and starts to turn blue. You should __________.

    Y a. perform the Heimlich maneuver
    N b. make the victim lie down with the feet elevated to get blood to the brain
    N c. immediately administer CPR
    N d. do nothing until the victim becomes unconscious

584: The SS AMERICAN MARINER arrived in port with drafts of: FWD28'-08", AFT 29'-05". 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-0013

    N a. FWD 28'-09", AFT 29'-00"
    N b. FWD 28'-07", AFT 29'-01"
    N c. FWD 28'-05", AFT 29'-08"
    Y d. FWD 28'-04", AFT 29'-05"

672: A foam-type portable fire extinguisher is most useful in fighting a fire in __________.

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

679: All of the following are part of the fire triangle EXCEPT __________.

    N a. heat
    N b. oxygen
    Y c. electricity
    N d. fuel

800: The "trimming arm" of a vessel is the horizontal distance between the __________.

    N a. LCB and LCF
    N b. LCF and LCG
    N c. LHA and LCG
    Y d. LCB and LCG

805: Application for a waiver of any requirements of the regulations for oil transfer operations must be submitted to the __________.

    N a. District Commander
    N b. Commandant
    Y c. Captain of the Port
    N d. nearest Coast Guard office

843: The signal given to commence lowering the lifeboats is __________.

    N a. 3 short blasts of the ship's whistle
    Y b. specified on the muster list (station bill)
    N c. 3 long blasts of the ship's whistle
    N d. 1 long blast of the ship's whistle

850: When a vessel is stationary and in a hogging condition, the main deck is under __________.

    N a. compression stress
    Y b. tension stress
    N c. shear stress
    N d. racking stress

874: If you were being assisted by an icebreaker and he sent you the single letter "Q", he would be telling you __________.

    N a. that he has his engines in reverse
    N b. that he is shortening the distance between vessels
    Y c. to shorten the distance between vessels
    N d. that his vessel is healthy

904: If you are on the beach and are signaling to a small boat in distress that your present location is dangerous and they should land to the left, you would __________.

    N a. fire a green star to the left
    N b. send the letter K by light and point to the left
    N c. place an orange signal to your left as you signal with a white light
    Y d. send the code signal S followed by L

918: Fires which occur in energized electrical equipment, such as switchboard insulation, are class __________.

    N a. A
    N b. B
    Y c. C
    N d. D

954: Which is the lifesaving signal for, "This is the best place to land"?

    N a. Red star rocket
    N b. Orange smoke signal
    Y c. Green star rocket
    N d. Horizontal motion of a flag

965: What statement about immersion suits is TRUE?

    N a. Immersion suits should be worn while performing routine work on deck.
    Y b. No stowage container for immersion suits may be capable of being locked.
    N c. During the annual maintenance, the front zipper should be lubricated using light machine oil or mineral oil.
    N d. Any tear or leak will render the suit unserviceable and it must be replaced.

1042: Which danger exists to people when CO2 is discharged into a small enclosed space?

    N a. Damaged eardrums
    N b. Electric shock
    N c. Frostbite
    Y d. Respiratory arrest

1182: An oxygen indicator can be used to determine if there is __________.

    Y a. sufficient oxygen in a compartment to support life
    N b. combustible gases present
    N c. hydrogen gas present
    N d. All of the above

1414: What should be used to steer an open lifeboat if the rudder becomes lost or damaged?

    N a. Sea anchor
    Y b. Steering oar
    N c. Spare rudder
    N d. Daggerboard

1660: If the meter needle of the oxygen indicator cannot be set to zero, what should be done?

    Y a. Replace the batteries.
    N b. Check the sampling tube for blockage.
    N c. Adjust the final reading by the amount the needle is displaced from zero.
    N d. Replace the platinum filament.

1906: Your vessel displaces 930 tons and measures 156'L by 38'B. What is the reduction in GM due to free surface if the fish hold (46'L by 28'B by 8'D) is filled with 1.5 feet of water? (Each foot of water weighs 36.8 tons)

    N a. 2.16 feet
    Y b. 2.44 feet
    N c. 2.75 feet
    N d. 2.99 feet

1981: On a mobile offshore drilling unit it is required to __________.

    N a. inspect the lifesaving gear provided in any helicopter landing on the rig
    N b. check the Certificate of Inspection of any support vessel bringing hazardous materials to the rig
    N c. insure that engineering spaces are in a clean and sanitary condition
    Y d. record the length of each abandonment drill in the rig's log book

2031: Which condition is NOT necessary for a combustible liquid to burn?

    N a. The temperature of the substance must be equal to or above its fire point.
    N b. The air must contain oxygen in sufficient quantity.
    N c. The mixture of vapors with air must be within the "explosive range."
    Y d. All of the above are necessary for a combustible liquid to burn.

2212: In order to maintain speed while changing course from a close reach to a broad reach, the sails should be __________.

    N a. lowered
    N b. reefed
    N c. hauled in
    Y d. eased out

2375: An entry of water, gas, oil, or other formation fluid into the wellbore is called a __________.

    N a. blowout
    Y b. kick
    N c. gusher
    N d. flow

2410: Grade A flammable liquids are those with a Reid vapor pressure of __________.

    N a. 5 to 8 1/2 psia
    N b. more than 8 1/2 psia but less than 14 psia
    Y c. 14 psia or more
    N d. None of the above

2435: The joint of the riser in a marine riser system that compensates for heave, the up-and-down motion of a floater, is the __________.

    N a. flex joint
    Y b. slip joint
    N c. heave joint
    N d. riser joint

2468: What is NOT classified as a flammable liquid?

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

2491: The platform that supports the derrickman when tripping pipe is called the __________.

    N a. Texas deck
    N b. water table
    N c. stabbing board
    Y d. monkey board

2560: Regulations require that cargo tanks in which grades B or C liquids are carried must be vented with which of the following?

    N a. Gooseneck vents
    N b. Flame screens
    Y c. Pressure vacuum relief valves
    N d. Forced draft blowers

2566: LFG tank and pipeline maintenance should include __________.

    N a. exclusion of all sand and solid matter
    N b. cleaning with clean fresh or sea water
    N c. examination for fractures and pitting
    Y d. All of the above

2792: Your vessel's drafts are: FWD 18'-06", AFT 19'-01"; and the KG is 18.2 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the righting arm at 35° inclination.

    N a. 1.8 feet
    N b. 3.0 feet
    N c. 4.7 feet
    Y d. 5.8 feet

2834: Your vessel's drafts are: FWD 27'-06", AFT 28'-02"; and the KG is 23.1 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the remaining righting arm at 60° inclination if the center of gravity is 2.4 feet off the centerline.

    N a. 2.4 feet
    N b. 1.8 feet
    Y c. 0.5 foot
    N d. 0.2 foot

3023: A semisubmersible which flops between forward and aft angles of trim is likely to have __________.

    Y a. KML less than KGL
    N b. an off-center LCG
    N c. LCG greater than LCB
    N d. KML greater than KMT

3039: What is a requirement for remote manual shutdown stations for internal combustion engine driven cargo pumps on tank barges?

    Y a. They must be conspicuously marked.
    N b. They must be located at least 10 feet from the engine.
    N c. There must be at least two such shutdown devices.
    N d. The valve rods shall be fitted with stuffing boxes.

3126: A cargo information card does NOT contain __________.

    N a. instructions for the safe handling of the cargo
    N b. appearance and odor characteristics of the cargo
    N c. precautions to be observed in case of a spill or leak
    Y d. duties of the person in charge during the transfer of cargo

3259: Why is a warning sign displayed at the gangway or access point of a barge during cargo transfer?

    N a. To keep visitors away from the barge
    N b. To prohibit smoking
    N c. To prohibit open lights
    Y d. All of the above

3675: The DEEP DRILLER, while loaded as shown in the Sample Load Form #4 (Drilling), suffers damage to the port forward column below the waterline. Pumping from tank 2P and 3P is not sufficient to prevent increasing port list and bow down trim. You should consider counterflooding in tank __________.

    N a. 2S
    N b. 9S
    N c. C2BS
    Y d. 10S

3724: Physical exertion on the part of a person who has fallen into cold water would __________.

    N a. be the best thing to try if there was no rescue in sight
    N b. increase survival time in the water
    Y c. increase the rate of heat loss from the body
    N d. not affect the heat loss from the body

3726: 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

3870: Each EPIRB required on an OSV shall be tested using the integrated test circuit and output indicator every __________.

    N a. week
    N b. two weeks
    Y c. month
    N d. two months

3881: On the DEEP DRILLER, among the starboard-side valves to open when deballasting from ballast tank 2S is valve __________.

    N a. 3
    Y b. 5
    N c. 6
    N d. 7

4159: A yellow signal, floating in the air from a parachute, about 300 feet above the water, indicates that a submarine __________.

    Y a. will be coming to periscope depth
    N b. will be coming to the surface
    N c. is on the bottom in distress
    N d. is in distress and will try to surface

4297: The COASTAL DRILLER is in ocean transit in which the winds are not expected to exceed 70 knots. In order to meet the leg strength requirements, the tip of can (TOC) position should be at __________.

    N a. 0.00 feet (flush with bottom of hull)
    N b. 1.20 feet
    Y c. 12.38 feet
    N d. 60.50 feet

4616: You are scheduled to load 4700 tons of cargo, 45 tons of crew effects and stores and 323 tons of fuel. Use the blue pages of the Stability Data Reference Book to determine the vessel's mean draft in salt water.

    Y a. 19'-00"
    N b. 19'-04"
    N c. 19'-09"
    N d. 20'-01"

4812: The SS AMERICAN MARINER is ready to bunker with drafts of FWD 21'-04", AFT 26'-04". 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-0170

    Y a. 0.54 ft
    N b. 0.62 ft
    N c. 0.80 ft
    N d. 0.85 ft

5045: Your jack-up is being towed along a shipping channel. You are concerned that a vessel that is overtaking you is coming too close to pass safely. You must __________.

    N a. broadcast a Mayday message
    N b. prepare the survival craft for launching
    N c. sound the abandon unit signal
    Y d. sound five or more short blasts on the whistle

5234: The SS AMERICAN MARINER is ready to bunker with drafts of FWD 15'-05", AFT 21'-03". 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-0174

    N a. 1.05 feet
    Y b. 1.15 feet
    N c. 1.25 feet
    N d. 1.31 feet

5423: The COASTAL DRILLER, loaded as shown in the Sample Load Form #3 (Drilling), dumps all the mud in pits 1, 2, 3, and 4. What is the new TCG?

    N a. -0.36 foot
    Y b. -0.26 foot
    N c. 0.31 foot
    N d. 0.36 foot

5508: Your drafts are: FWD 17'-09", AFT 18'-03". What is the KM based on the tables in the blue pages of the Stability Data Reference Book?

    N a. 25.7 feet
    N b. 26.0 feet
    Y c. 26.2 feet
    N d. 26.4 feet

5871: The DEEP DRILLER is moored in 600 feet of water. The tension on anchor line #8 is 190 kips. What is the vertical component of chain tension for that line?

    N a. 53.6 long tons
    Y b. 55.3 long tons
    N c. 84.8 long tons
    N d. 442.4 long tons

6157: Smoking in bed on a MODU is prohibited __________.

    Y a. at all times
    N b. during evening hours
    N c. unless another person is present
    N d. during drilling operations

6555: The chemicals in sacks aboard MODU's are palletized to reduce __________.

    Y a. labor in loading and handling
    N b. pilferage
    N c. marking and labeling
    N d. contamination

6660: Your drafts are: FWD 24'-09", AFT 27'-02". Use the blue pages of the Stability Data Reference Book to determine the vessels displacement if you are in fresh water.

    N a. 13,075 tons
    Y b. 13,350 tons
    N c. 13,590 tons
    N d. 13,700 tons

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

8435: A MODU which is required to carry an Oil Record Book must log in the book __________.

    Y a. discharge of ballast or cleaning water from fuel tanks
    N b. sounding levels of all fuel tanks on a daily basis
    N c. the grade and specific gravity of all fuel oil carried
    N d. fuel consumption rates on a weekly basis

8561: On a MODU, a fire pump may be used for other purposes if __________.

    N a. the other services are run off a reducing station with a pressure gage
    Y b. a separate fire pump is available for use on the fire main
    N c. all other services are operated by a manifold near the pump
    N d. All of the above

8865: The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). Although winds are less than 70 knots, excessive motion requires ballasting to survival draft. Assume that 4087 long tons of ballast are added at an average VCG of 8.32 feet, and upon arrival at 45 feet, port and starboard ballast tanks 1, 3, and 8 are slack. What will be the new margin on the maximum allowable KG?

    Y a. 7.08 feet
    N b. 8.12 feet
    N c. 8.44 feet
    N d. 8.96 feet

9217: Apparent wind speed blowing across a MODU under tow can be measured by a(n) __________.

    N a. barometer
    N b. wind vane
    Y c. anemometer
    N d. thermometer

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