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.


18: When giving mouth-to-mouth rescue breathing to an adult, you should breathe at the rate of how many breaths per minute?


217: Which item do you NOT have to provide for the Coast Guard representative at the time of a stability test?


239: Which statement about the free surface correction is TRUE?


247: During a stability test on a small passenger vessel __________.

    N a. the vessel must be moored snugly
    N b. each tank must be partially full to show it does not leak
    N c. all dunnage, tools, and extraneous items are secured
    Y d. water under vessel must be deep enough to prevent grounding

638: You are on watch at sea, at night, when the ordinary seaman reports a fire in number five upper 'tween deck. Which of the following should NOT be done immediately?

    N a. Sound the general alarm
    N b. Secure mechanical cargo hold ventilation
    N c. Call for water on deck
    Y d. Release carbon dioxide into the affected compartment

740: What is NOT a motion of the vessel?

    N a. Pitch
    N b. Roll
    Y c. Trim
    N d. Yaw

770: A vessel is described as a two compartment vessel when it __________.

    N a. has no more than two compartments
    N b. has two compartments in addition to the engine room
    N c. will sink if any two compartments are flooded
    Y d. will float if any two adjacent compartments are flooded

777: On small passenger vessels a gasoline engine must be fitted with __________.

    N a. A means of backfire flame control
    N b. A lubricating oil pressure gauge and a tachometer
    N c. Jacket water discharge temperature gauges
    Y d. All of the above

948: Fires in combustible metals, such as sodium or magnesium, are classified as class __________.

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

968: Which condition is necessary for a substance 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

1045: Which group would be used to send the signal Greenwich mean time 11:35 pm?

    N a. GMT 1135PM
    N b. T 2335 GMT
    Y c. Z 2335
    N d. G 2335

1063: Gasoline tank vent lines on board small passenger vessels must be fitted with removable flame screens __________.

    N a. and 30 square inches of louvers
    N b. three inches in diameter with a check valve to prevent water from entering in heavy weather
    N c. three inches in circumference inside the fill pipe
    Y d. consisting of a single screen of at least 30 X 30 mesh, corrosion resistant wire

1216: After launching, an inflatable raft should be kept dry inside by __________.

    N a. opening the automatic drain plugs
    N b. draining the water pockets
    N c. using the electric bilge pump
    Y d. using the bailers and cellulose sponge

1238: When attempting to enter a compartment containing a fire, which method of applying water is best?

    N a. High-velocity fog stream directed toward the overhead
    N b. Straight stream directed into the center of the fire
    Y c. Sweeping the compartment with a fog stream
    N d. Solid stream directed toward the overhead

1401: Which statement about transmitting distress messages by radiotelephone is INCORRECT?

    N a. Distress messages should first be transmitted on 2182 kHz.
    Y b. It is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds duration.
    N c. If no answer is received on the designated distress frequencies, repeat the distress call on any frequency available.
    N d. Channel 16 (156.8 MHz) may be used for distress messages.

1435: After the initial cleaning of flue gas in an inert gas system the gas is passed through what device for final cleaning?

    N a. Scrubber
    Y b. Demister
    N c. Deck water seal
    N d. Final filter

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

1666: The SS AMERICAN MARINER has the following drafts: FWD 10'-04", AFT 14'-08". Upon completion of loading and bunkering the items listed will be on board. Use the white pages of The Stability Data Reference Book to determine the minimum GM required to meet a one compartment standard. ST-0045

    Y a. 1.91 feet
    N b. 2.09 feet
    N c. 2.21 feet
    N d. 2.48 feet

1774: You are preparing to contain an oil spill. You must first receive approval from the Federal On-Scene Coordinator (OSC) prior to __________.

    N a. employing a boom
    N b. using suction equipment
    Y c. applying chemical agents
    N d. deploying skimmers

1816: INTERNATIONAL AND INLAND Except where specifically required by the rules, a sailing vessel is NOT required to keep out of the way of a __________.

    N a. vessel engaged in fishing
    N b. vessel anchored
    Y c. power-driven pilot vessel on station
    N d. vessel setting a channel buoy

1923: Except as provided by approved special examinations, each offshore drilling unit must be dry-docked at least once during every __________.

    N a. 12 month period
    N b. 18 month period
    Y c. 24 month period
    N d. 36 month period

2028: Your drafts are: FWD 6'-01", AFT 6'-10". From past experience, you know that the vessel will increase her draft 1 inch for every 6 tons loaded. There is rig water on board and 11 tons of deck cargo. How many more tons of cargo can be loaded and still maintain the same trim? (D037DG )

    N a. 6 tons
    Y b. 12 tons
    N c. 18 tons
    N d. 24 tons

2287: The limit switches on a MODUs survival-craft winch system __________.

    Y a. stop the winch just before the craft reaches the final stowage position
    N b. limit the amount of cable on the drum
    N c. limit the ascent rate
    N d. stop the winch in case the craft weighs too much

2302: 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-0056

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

2395: A negative metacentric height __________.

    Y a. should always be immediately corrected
    N b. will always cause a vessel to capsize
    N c. always results from off-center weights
    N d. All of the above are correct

2457: What is a grooved pulley?

    Y a. Sheave
    N b. Slip
    N c. Block
    N d. Reeve

2540: The MINIMUM ventilation requirements for pumprooms on tank vessels (constructed in 1960) carrying grades B or C liquid cargo with machinery spaces located below the freeboard deck specify __________.

    N a. gooseneck vents and flame screens
    N b. that it be connected to a vent header system
    Y c. that it be power ventilation
    N d. that it be fitted with at least two ducts extended to the weather deck

2565: Annual inspection of MODU cranes shall be conducted by __________.

    N a. U.S. Coast Guard
    N b. the person in charge
    Y c. a qualified inspector
    N d. the crane operator

2640: What is NOT a grade E product?

    N a. Dioctyl-phthalate
    Y b. Gasoline
    N c. Formic acid
    N d. Creosote coal tar

2845: The SS AMERICAN MARINER will sail with the load shown. Use the white pages of The Stability Data Reference Book to determine the drafts. ST-0084

    N a. FWD 27'-01", AFT 25'-08"
    N b. FWD 29'-09", AFT 25'-09"
    N c. FWD 25'-09", AFT 30'-05"
    Y d. FWD 25'-06", AFT 30'-00"

2861: What is the minimum number of portable fire extinguishers required on board a 45-foot towing vessel having a fixed fire system on board? (Uninspected Vessel Regulations)

    N a. 1 B-I
    Y b. 2 B-I
    N c. 3 B-I
    N d. 4 B-I

2873: As shown, the symbol for the reference from which transverse measurements are made is __________. (D041DG )

    Y a. 5
    N b. 4
    N c. 3
    N d. 1

2914: The sailing drafts are: FWD 25'-03", AFT 26'-03" and the GM is 3.5 feet. Use the information in Section 1, the blue pages, of the Stability Data Reference Book, to determine the available righting arm at 25° inclination.

    N a. 0.8 foot
    N b. 1.4 feet
    Y c. 2.0 feet
    N d. 2.6 feet

3076: The SS AMERICAN MARINER is ready to bunker with drafts of FWD 11'-01", AFT 15'-01". 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-0103

    N a. 0.87 foot
    N b. 0.98 foot
    Y c. 1.14 feet
    N d. 1.25 feet

3124: On a life float or buoyant apparatus, the life line is __________. (small passenger vessel regulations)

    Y a. secured around the sides and ends in bights of not longer than three feet
    N b. woven into a net and secured in the center of the float
    N c. used for securing unconscious persons to the sides
    N d. the lanyard for securing provisions

3221: A MODU with a displacement of 15,000 kips has a KG of 20 feet. A load of 300 kips is shifted from a VCG of 100 feet to a VCG of 10 feet. How far does the KG move?

    N a. 0.2 foot downward
    N b. 0.2 foot upward
    Y c. 1.8 feet downward
    N d. 1.8 feet upward

3738: A crew member is unconscious and the face is flushed. You should __________.

    Y a. lay the crew member down with the head and shoulders slightly raised
    N b. administer a liquid stimulant
    N c. lay the crew member down with the head lower than the feet
    N d. attempt to stand the crew member upright to restore consciousness

3994: The color of the signal flare sent up by a submarine about to surface due to an emergency condition within the submarine is __________.

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

4053: The DEEP DRILLER, loaded as shown in the Sample Load Form #4 (Drilling), discharges a non-liquid load of 275.8 long tons from a position 130 feet above the keel, 40 feet forward of amidships, and 30 feet to port of the centerline. What is the resulting trim angle?

    N a. 3.49 degrees to the stern
    N b. 4.69 degrees to the stern
    Y c. 5.18 degrees to the stern
    N d. 5.68 degrees to the stern

4183: What is the shift in KG if all the liquid mud is dumped when the DEEP DRILLER is loaded as shown in the Sample Load #3 (Preparing to Drill)?

    N a. 1.26 feet downward
    Y b. 1.51 feet downward
    N c. 2.77 feet downward
    N d. 1.47 feet downward

4235: Until a change to lightweight has been approved, the weights and moments shown in the Changes to Lightweight Record of the COASTAL DRILLER are treated as __________.

    Y a. variable loads
    N b. stationary loads
    N c. fixed loads
    N d. basic loads

4239: Either one approved B-V semi-portable fire-extinguishing system or a fixed fire-extinguishing system is required to protect the engine room on towing vessels whose construction was contracted for before __________. (Uninspected Vessel Regulations)

    N a. April 29, 2005
    N b. April 29, 2004
    Y c. August 27, 2003
    N d. February 1, 2002

4294: By regulation, you MUST keep a record of the use of your radiotelephone for a minimum of __________.

    N a. six months
    N b. one year
    Y c. two years
    N d. thirty months

4461: If you have to jump in the water when abandoning a MODU, your legs should be __________.

    N a. spread apart as far as possible
    N b. held as tightly against your chest as possible
    N c. in a kneeling position
    Y d. extended straight down and crossed at the ankles

5153: A semisubmersible floating in sea water displaces 20,000 long tons. She has vertical moments of 1,000,000 foot-long tons. What is the change in KG if 500 long tons are placed aboard at a KG of 120 feet?

    N a. 1.22 feet upward
    Y b. 1.71 feet upward
    N c. 1.75 feet upward
    N d. 2.93 feet upward

5232: Fusible-link fire dampers are operated by __________.

    N a. a mechanical arm outside the vent duct
    N b. electrical controls on the bridge
    Y c. the heat of a fire melting the link
    N d. a break-glass and pull-cable system

5463: A common class of wire rope used for mooring is the 6x19 class. What does the 6 represent?

    N a. Factor of safety
    N b. Number of wires per strand
    Y c. Number of strands per wire rope
    N d. Number of wires in the core

5655: When the air temperature is just below 32°F, snow FIRST adheres to __________.

    N a. surfaces near the waterline
    N b. vertical surfaces
    Y c. horizontal surfaces
    N d. leeward surfaces

5751: When piggybacking anchors, the distance between the primary anchor and the secondary anchor is determined by __________.

    N a. bottom conditions
    N b. anchor types
    Y c. water depth
    N d. workboat winch capacity

6201: The two courses of action if the underwater hull of a MODU is severely damaged are to plug the openings and to __________.

    N a. dewater the compartment
    Y b. establish and maintain flooding boundaries
    N c. secure power to the compartment
    N d. counter flood to maintain even keel

6248: Your drafts are: FWD 26'-03", AFT 30'-08". Use the blue pages of the Stability Data Reference Book to determine the location of the center of flotation relative to amidships.

    N a. 2.8 feet aft
    N b. 2.3 feet aft
    N c. 1.9 feet aft
    Y d. 1.5 feet aft

6505: A MODU helicopter landing deck on which fueling operations are conducted must have a fire protection system that is capable of discharging at 100 psi pressure a foam spray of at least __________.

    N a. 30 gallons per minute
    N b. 40 gallons per minute
    Y c. 50 gallons per minute
    N d. 60 gallons per minute

8793: While drilling loaded as shown in Sample Load Form #4 (Drilling), the DEEP DRILLER suffers a sudden unexpected inclination to port and aft. Strong winds and high waves are from the starboard bow. Among the possible causes, you should consider __________.

    N a. failure of mooring lines 1 or 2
    Y b. failure of mooring lines 3 or 4
    N c. leak in ballast tank #9P
    N d. ballast tanks equalizing into tank 10P

8821: A jack-up is trimmed six inches by the bow. The moment required to change trim one inch (MCT1") is 1200 foot-kips. Transferring 200 kips of drill water from a tank with an LCG of 20 feet to a tank with an LCG of 140 feet results in a final trim of __________.

    N a. zero trim (level)
    Y b. 1 foot 2 inches by the stern
    N c. 1 foot 8 inches by the stern
    N d. 2 feet 2 inches by the stern

9105: Each ventilation system for an enclosed classified location on a MODU must provide a complete change of air every __________.

    N a. 3 minutes
    Y b. 5 minutes
    N c. 7 minutes
    N d. 10 minutes

9107: The amount of Halon remaining in an extinguisher is determined by __________.

    N a. internal inspection
    N b. checking the gage
    Y c. weighing the cylinder
    N d. checking the tag

9287: What is the longitudinal shift in the center of gravity if 200 short tons is moved ten feet to port and 30 feet forward on a MODU with a displacement of 8,960 long tons?

    N a. 0.20 foot
    N b. 0.22 foot
    Y c. 0.67 foot
    N d. 0.84 foot

9341: Dry chemical extinguishers may be used on what class of fires?

    N a. A only
    N b. B only
    N c. B and C only
    Y d. A, B or C as marked on the extinguisher

9563: The KG of a vessel is found by dividing the displacement into the __________.

    N a. height of the center of gravity of the vessel
    Y b. sum of the vertical moments of the vessel
    N c. sum of the free surface moments of the vessel
    N d. sum of the longitudinal moments of the vessel

9575: While preloading, the COASTAL DRILLER has a total weight of 21,401 kips. The LM are 2,560,416 ft-kips, and the TM are 6,206 ft-kips. What is the bow leg reaction?

    Y a. 7,099 kips
    N b. 7,134 kips
    N c. 7,151 kips
    N d. 7,203 kips