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.


43: If an inflatable liferaft is overturned, it may be righted by __________.


84: After using a C02 portable extinguisher, it should be __________.


241: The signal L1210 means the __________.


360: The greatest effect on stability occurs from loose liquids flowing __________.

    N a. from side to side in the tanks of the vessel
    N b. from fore to aft in the tanks of a vessel
    Y c. in and out of a vessel that is holed in a wing tank
    N d. in and out of a vessel that is holed in a peak tank

383: The purpose of the tripping line on a sea anchor is to __________.

    N a. aid in casting off
    N b. direct the drift of the vessel
    Y c. aid in its recovery
    N d. maintain maximum resistance to broaching

392: What should be used to remove corrosion from the swivel on the female coupling of a fire hose?

    N a. Bearing grease and a wire brush
    N b. Talc and fine sandpaper
    N c. Fish oil and a soft brush
    Y d. Fresh water, soap, and a stiff brush

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

556: All lifeboats, rescue boats, and rigid-type liferafts shall be stripped, cleaned, and thoroughly overhauled at least once every __________.

    N a. 6 months
    Y b. year
    N c. 18 months
    N d. two years

678: Fire may be spread by which means?

    N a. Conduction of heat to adjacent surfaces
    N b. Direct radiation
    N c. Convection
    Y d. All of the above

835: No person may serve as the person in charge of both the vessel and the facility during oil transfer operations unless __________.

    N a. there is ready access between the two
    N b. the vessel and facility are immediately adjacent
    N c. the person in charge has a rapid means of transportation between the two
    Y d. the Captain of the Port authorizes such procedure

929: According to Annex V to MARPOL 73/78, garbage containing plastic is permitted to be disposed of by __________.

    Y a. incinerating offshore
    N b. discharging when at least 12 nautical miles from nearest land
    N c. grinding to less than 1" and discharging at least 12 nautical miles from nearest land
    N d. grinding to less than 1" and discharging at least 25 nautical miles from nearest land

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

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

1070: On small passenger vessels, fuel lines may be made of __________.

    N a. plastic, rubber, or seamless steel tubing
    N b. stainless steel, iron, or brass
    N c. copper, plastic, stainless steel, or galvanized iron
    Y d. annealed tubing of copper, nickel-copper, or copper nickel

1078: The explosive range of Bunker C mixed with air is __________.

    N a. 0% to 1% by volume
    Y b. 1% to 5% by volume
    N c. 5% to 10% by volume
    N d. 10% to 20% by volume

1138: What is LEAST likely to cause ignition of fuel vapors?

    N a. Static electricity
    N b. An open running electric motor
    N c. Loose wiring
    Y d. Explosion proof lights

1240: On open lifeboats, the purpose of the wire stretched between the davit heads is to __________.

    N a. keep the movement of the davits at the same speed
    N b. keep the davits from slipping when they are in the stowed position
    N c. prevent vibration during lowering of the boat
    Y d. support the manropes

1255: The color of the signal flare sent up by a submarine indicating that a torpedo has been fired in a training exercise is __________.

    N a. white
    Y b. green
    N c. yellow
    N d. red

1405: When launching an inflatable liferaft, you should make sure that the operating cord is __________.

    Y a. fastened to some substantial part of the vessel
    N b. not fastened to anything
    N c. secured to the hydrostatic release
    N d. fastened to the raft container

1411: Which statement about entry into a space that has been sealed for a long time is TRUE?

    Y a. A tank that has been used to carry hazardous liquids should be tested for oxygen content, toxicity, and explosive gases.
    N b. You can safely enter the space without a breathing apparatus if the oxygen content exceeds 14%.
    N c. The natural ventilation through the installed vents is sufficient to provide the proper oxygen content.
    N d. The heat of the sun on upper ballast tanks, such as in a bulk carrier, may generate carbon monoxide.

1498: The spread of fire is prevented by __________.

    Y a. cooling surfaces adjacent to the fire
    N b. leaving combustibles in the endangered area
    N c. increasing the oxygen supply
    N d. All of the above

1730: Each inert gas system must be designed to supply the cargo tanks with a gas, or mixture of gasses, that has an oxygen content by volume of __________.

    Y a. 5% or less
    N b. 10% or less
    N c. 15% or less
    N d. 20% or less

2169: The flammable limits of gasoline are 1.3 to 7.6 percent volume of air. You are testing a tank that contained gasoline by using a combustible gas indicator. Under testing, the tank sample caused the needle to move rapidly to 100 on the dial and remain there. What is the concentration of flammable gas?

    N a. 0
    Y b. 1.3 to 7.6%
    N c. over 7.6%
    N d. over 100%

2188: You have 6 containers of rig supplies each measuring 8'L by 4'B by 3'H and weighing 1.6 tons each. Each container is stowed on deck. What is the maximum VCG permitted of the remaining cargo if you are carrying rig water and load to maximum capacity? (D037DG )

    N a. 0.4 foot
    N b. 0.9 foot
    N c. 1.75 feet
    Y d. 2.18 feet

2209: What are the health hazard ratings for a product of triethylbenzene?

    Y a. 1,1,1
    N b. 2,2,2
    N c. 0,1,1
    N d. Unavailable

2255: The survival capsule is manufactured with fire retardant __________.

    N a. foam
    N b. marine plywood
    N c. steel
    Y d. fiberglass

2256: The SS AMERICAN MARINER is ready to sail with the load shown. Use the white pages of The Stability Data Reference Book to determine the available GM. ST-0054

    N a. Available GM 6.8 ft
    N b. Available GM 5.4 ft
    N c. Available GM 4.1 ft
    Y d. Available GM 3.6 ft

2317: 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-0057

    Y a. 7.7 feet
    N b. 9.1 feet
    N c. 9.9 feet
    N d. 10.6 feet

2588: Which extinguishing agent is recommended in the Chemical Data Guide for use on a carbon disulfide fire?

    N a. Alcohol foam
    Y b. Dry chemical
    N c. Chemical foam
    N d. Water fog

2777: The lubber's line on a magnetic compass indicates __________.

    N a. compass north
    Y b. the direction of the vessel's head
    N c. magnetic north
    N d. a relative bearing taken with azimuth circle

2828: On board small passenger vessels, how often shall the Master test the steering gear?

    N a. Once a week
    N b. Once a month
    N c. Every 72 operating hours while underway
    Y d. Before getting underway for the day's operations

2856: Which vessel is NOT required to have a Pollution Placard posted on board?

    Y a. 215-foot naval auxiliary vessel
    N b. 75-foot towing vessel
    N c. 50-foot cabin cruiser used for pleasure only
    N d. 150-foot unmanned tank barge

2933: Movement of liquid in a tank when a drilling barge inclines causes an increase in __________.

    N a. righting arm
    N b. metacentric height
    N c. height of the uncorrected KG
    Y d. natural rolling period

3128: You are Master of a 20-ton ketch. You wish to heave-to on the starboard tack in 35 knots of wind. Which action would be appropriate?

    N a. Set your storm jib aback to port and secure your rudder hard to starboard.
    N b. Secure your reefed mizzen aback to starboard and your storm jib aback to port. Secure your rudder hard to port.
    N c. Sheet your mizzen in flat and secure your rudder amidships.
    Y d. Secure your storm jib aback to starboard and sheet your reefed mizzen in flat. Secure your rudder hard to starboard.

3201: The stamped full weight of a 100-lb. CO2 bottle is 314 lbs. What is the minimum weight of the bottle before it has to be recharged?

    N a. 282 lbs.
    N b. 294 lbs.
    N c. 300 lbs.
    Y d. 304 lbs.

3285: The SS AMERICAN MARINER has the liquid loading shown. Use the white pages of The Stability Data Reference Book to determine the LCG-FP of the liquid load. ST-0118

    N a. 271.2 ft
    N b. 288.8 ft
    N c. 292.3 ft
    Y d. 307.2 ft

3304: If your passenger vessel has been issued a stability letter, it must be __________.

    N a. filed in the ship's office
    N b. posted in a passenger area
    N c. posted adjacent to the Certificate of Inspection
    Y d. posted in the pilothouse

3420: How should the number "1" be pronounced when spoken on the radiotelephone?

    N a. OO-NO
    Y b. OO-NAH-WUN
    N c. NUM-EV-WUN
    N d. NEW-MAL-WON

3443: The DEEP DRILLER, at a draft of 60 feet, has a KGT of 57.11 feet and TCG of 0.5 foot to port. What is the list angle?

    N a. 2° port
    N b. 3° port
    N c. 4° port
    Y d. 5° port

3468: Handholds 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

3698: You are attempting to administer CPR to a victim. When you blow into his mouth it is apparent that no air is getting into the lungs. What should you do?

    N a. Blow harder to force the air past the tongue.
    N b. Raise the victim's head higher than his feet.
    N c. Press on the victim's lungs so that air pressure will blow out any obstruction.
    Y d. Re-tip the head and try again.

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

4028: Fire protection regulations for towing vessels allow all of these types of fuel piping, EXCEPT ____________ .

    N a. steel
    N b. aluminum in an aluminum-hulled vessel
    Y c. schedule 80 fire resistant plastic pipe
    N d. nickel-copper, copper-nickel or annealed copper

4121: The DEEP DRILLER is observed to be level at a draft of 60.0 feet. At the same time, the calculated load form shows the displacement to be 17,845 long tons, total longitudinal moments 51,466 foot-tons, and total transverse moments -10,000 foot-tons. What is the weight of the missing load?

    N a. 220.7 long tons
    N b. 235.3 long tons
    N c. 253.7 long tons
    Y d. 272.7 long tons

4170: The color of the signal flares sent up by a submarine surfacing from periscope depth is __________.

    N a. yellow
    N b. red
    N c. green
    Y d. white

4290: If you use obscene, indecent, or profane language over the radiotelephone, you can be __________.

    N a. assessed a fine of up to $5,000, imprisonment of up to three years, or both
    Y b. assessed a fine not to exceed $11,000, imprisonment of not more than two years, or both
    N c. assessed a fine not to exceed $20,000
    N d. imprisoned up to five years

4557: The sounding level of 12 lb. per gallon mud in mud pit 1S of the COASTAL DRILLER is 5.5 feet. What is the weight of the mud?

    N a. 104.53 kips
    Y b. 114.37 kips
    N c. 116.45 kips
    N d. 127.41 kips

4813: The COASTAL DRILLER is loaded as shown in the Sample Load Form #1 (Rig Move). What is the value of KML if the entire contents of drill water tanks 6 and 7 are discharged?

    N a. 253.90 feet
    N b. 253.24 feet
    Y c. 252.92 feet
    N d. 252.24 feet

5067: While a MODU is underway, a look-out must be maintained __________.

    Y a. at all times
    N b. only during periods of restricted visibility
    N c. only when other vessels are present
    N d. only during the hours of darkness

5155: A MODU displacing 10,000 long tons with KG 20.0 feet, uses its crane to lift a 40 long ton load from dockside and place it on board at a VCG of 5.0 feet. When lifting, the head of the crane boom is 50.0 feet above the keel. During the lift, what is the apparent increase in KG?

    N a. 0.02 foot
    N b. 0.12 foot
    N c. 0.18 foot
    Y d. 0.20 foot

5311: The COASTAL DRILLER, in field transit at a draft of 10 feet 0 inches with winds less than 70 knots, has a KGT of 39.0 feet and a KGL of 38.6 feet. The margin on the maximum allowable KG is __________.

    N a. 3.0 feet
    N b. 3.4 feet
    Y c. 26.0 feet
    N d. 26.4 feet

5535: What effect is achieved from soaking an anchor?

    Y a. It allows the bottom soil to consolidate.
    N b. It gives the palms time to trip the anchor.
    N c. It stabilizes the mooring system.
    N d. It lubricates the anchor for better tripping.

5677: The DEEP DRILLER may remain at operating draft instead of deballasting to survival draft when __________.

    Y a. critical motion limits have not been exceeded
    N b. waves approach within two feet of the spider deck
    N c. the maximum wave height is greater than 64 feet
    N d. winds are greater than 70 knots

6031: On a MODU, a fire drill shall be conducted once every __________.

    Y a. week
    N b. month
    N c. crew change
    N d. other week

6791: At the required fire drill conducted aboard a MODU, all persons must report to their stations and demonstrate their ability to perform the duties assigned to them __________.

    N a. by the toolpusher
    Y b. in the Muster List ("Station Bill")
    N c. by the person conducting the drill
    N d. at the previous safety meeting

8313: The worst atmospheric condition for dispersion of H2S is __________.

    N a. heavy rain
    N b. gusty winds with rain
    Y c. nearly calm, clear nights or early morning
    N d. full sun with high winds

8517: While preparing for a storm when elevated, the total weight of the COASTAL DRILLER is 14,150 kips. LM are 1,712,150 ft-kips, and TM are -9,905 ft-kips. The port leg reaction is __________.

    N a. 4,536 kips
    N b. 4,716 kips
    N c. 4,824 kips
    Y d. 4,890 kips

9263: A casing string that is run below the previous casing string, but does not extend to the wellhead is called a __________.

    N a. production string
    Y b. liner
    N c. packer
    N d. squnch joint

9501: Stability is determined principally by the location of the point of application of two forces: the downward-acting gravity force and the __________.

    N a. upward-acting weight force
    N b. downward-acting weight force
    Y c. upward-acting buoyant force
    N d. environmental force

9545: An unstable upright equilibrium position on a vessel means that the metacenter is __________.

    Y a. lower than the center of gravity
    N b. at the same height as the center of gravity
    N c. higher than the baseline
    N d. on the longitudinal centerline