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.


476: What type of gauging is required for a cargo of formic acid?


525: What would you consult to determine the number of persons required on duty while loading a cargo of leaded gasoline on your tanker?


553: Which statement is TRUE concerning lifeboat gripes?


572: Your tankship has 40 gallons of 6% foam concentrate aboard. Approximately how much foam solution can be produced from this supply?

    N a. 200 gallons
    N b. 420 gallons
    Y c. 667 gallons
    N d. 986 gallons

704: Which radiotelephone transmission may be sent over channel 16?

    N a. Distress signal MAYDAY
    N b. Call to a particular station
    N c. A meteorological warning
    Y d. All of the above

869: As a last resort, a tourniquet can be used to __________.

    N a. hold a victim in a stretcher
    Y b. stop uncontrolled bleeding
    N c. hold a large bandage in place
    N d. restrain a delirious victim

887: Carbon dioxide as a fire fighting agent has which advantage over other agents?

    Y a. It causes minimal damage.
    N b. It is safer for personnel.
    N c. It is cheaper.
    N d. It is most effective on a per unit basis.

983: Your vessel has a metacentric height of 1.12 feet and a beam of 60 feet. Your average rolling period will be __________.

    N a. 20 seconds
    N b. 23 seconds
    Y c. 25 seconds
    N d. 35 seconds

1056: U.S.C.G. approved buoyant work vests are considered to be items of safety equipment and may be worn by members of the crew __________.

    N a. in lieu of life preservers during fire drills
    N b. in lieu of life preservers during boat drills
    N c. in lieu of life preservers during an actual emergency
    Y d. when carrying out duties near a weather deck's edge

1221: Which operation may cause the pressure in an inert tank to fall below the prescribed limits?

    N a. Loading
    Y b. Discharging
    N c. Crude oil washing
    N d. Steaming tanks

1317: The most effective way of applying carbon dioxide from a portable extinguisher to a fire is by __________.

    N a. forming a cloud cover over the flames
    Y b. directing the gas at the base of the flames in a slow sweeping motion
    N c. discharging the carbon dioxide into the heart of the flames
    N d. bouncing the discharge off an adjacent bulkhead just above the burning surface

1389: Which statement about the inert gas system is TRUE?

    Y a. Boiler soot blowers should never be used when the IG system is operating.
    N b. The boiler will produce the best quality of flue gas for the IG system when the boiler load is very light.
    N c. The boiler will produce the most quantity of flue gas for the IG system when the boiler load is very light.
    N d. Flue gas with excessive oxygen content is de-oxygenated in the scrubber.

1399: How should longitude 116°24.3'W be written when preparing an AMVER report?

    N a. 116°24.3W
    Y b. 11624W
    N c. 116.4W
    N d. 116W

1489: The boat command that means complete the stroke and level the oars horizontally with the blades trimmed fore and aft is __________.

    Y a. "Oars"
    N b. "Up oars"
    N c. "Way enough"
    N d. "Hold water"

1689: You must pick up an individual who has fallen overboard from a sailboat. The final approach should be __________.

    N a. upwind
    N b. downwind
    Y c. on a close reach
    N d. on a broad reach

1779: The Sailing Plan, required by vessels participating in AMVER, should be sent __________.

    N a. after the first position report
    Y b. within a few hours before or after departure
    N c. 24 hours prior to departure
    N d. 24 hours after departure

1784: Which statement concerning GMDSS distress alerts is TRUE?

    Y a. Information contained in a distress alert includes the name and position of the distressed vessel, and may include additional information such as the nature of the situation and what kind of assistance that may be required.
    N b. Distress alerts may be used to alert other vessels, including those in port, of existing navigational hazards.
    N c. Distress alerts may be used to alert other vessels, including those in port, of existing weather warnings.
    N d. A vessel in the vicinity of a distress situation may leave the area without notifying the RCC that is overseeing the operation.

1862: All electrical appliances aboard a vessel should be grounded to __________.

    N a. prevent them from falling when the vessel rolls
    Y b. protect personnel from electrical shock
    N c. increase their operating efficiency
    N d. prevent unauthorized personnel from operating them

1865: The SS AMERICAN MARINER is partially loaded with a GM of 2.6 feet and drafts of: FWD 13'-07", AFT 15'-01". Use the white pages of the Stability Data Reference Book to determine what tanks you should ballast to increase the GM to 3.4 feet.

    N a. Tanks: DB1, DB3
    N b. Tanks: DB5, DT1A
    Y c. Tanks: DB6, DB7, DT7
    N d. Tanks: DB4, DT8

1936: Your vessel displaces 696 tons and measures 135'L by 34'B. What is the reduction in GM due to free surface if the fish hold (32'L by 29'B by 9'D) is filled with 2.0 feet of water? (Each foot of water weighs 26.5 tons)

    N a. 1.96 feet
    N b. 2.04 feet
    N c. 2.25 feet
    Y d. 2.48 feet

1958: You have 710 tons of below deck tonnage. There is no liquid mud aboard. If you have 150 tons of cargo above deck with a VCG above the deck of 3.1 feet, what is the maximum allowed VCG of the remainder of the deck cargo that is permitted? (See illustration D036DG, stability letter for M.V. Hudson) (D036DG )

    N a. 1.84 feet
    N b. 2.13 feet
    N c. 2.43 feet
    Y d. 2.78 feet

2114: You have hand launched an inflatable liferaft. What should be one of your FIRST actions after all persons have boarded the liferaft?

    N a. Open the equipment pack.
    N b. Inflate the liferaft floor.
    N c. Decide on food and water rations.
    Y d. Cut the sea painter and clear the vessel.

2121: A life float on a fishing vessel must be equipped with __________.

    N a. smoke flares
    Y b. a life line
    N c. a hydrostatic release
    N d. a signal mirror

2487: The wire ropes of the riser tensioning system are attached to the __________.

    Y a. outer barrel of the telescoping joint
    N b. inner barrel of the telescoping joint
    N c. marine riser connector
    N d. ball joint

2594: 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 3 hold floods, the vessel will sink if the permeability exceeds what percent?

    N a. 64
    N b. 68
    N c. 72
    Y d. 78

2702: Your vessel displaces 12,000 tons and has a KG of 22.6 feet. What will be the length of the remaining righting arm at an angle of inclination of 30° if the center of gravity shifts 1.8 feet transversely? (Use the information in Section 1, the blue pages, of the Stability Data Reference Book)

    Y a. 0.8 foot
    N b. 1.2 feet
    N c. 1.8 feet
    N d. 2.3 feet

2719: Your vessel's drafts are: FWD 14'-04", AFT 17'-08". The LCG of the forepeak is 200 feet forward of amidships. How many tons of ballast must be pumped into the forepeak in order to have a drag of 2 feet? (Use the reference material in Section 1, the blue pages, of the Stability Data Reference Book)

    N a. 62 tons
    N b. 65 tons
    N c. 72 tons
    Y d. 75 tons

2741: A record of the types and strengths of steels used on a MODU must be included in the __________.

    N a. general plans
    N b. builder's documentation
    N c. Certificate of Inspection
    Y d. construction portfolio

2872: A tank barge equipped with an internal-combustion engine-driven cargo pump on the weather deck shall be provided with a minimum of one remote manual shutdown station. What is the correct location of the shutdown station?

    Y a. Midpoint of the vessel or 100 feet from the engine
    N b. Stern of the vessel or 100 feet from the engine
    N c. Midpoint of the vessel or 75 feet from the bow
    N d. Bow of the vessel or 75 feet from the engine

3129: If water is rising in the bilge of a survival craft, you should first __________.

    N a. abandon the survival craft
    N b. check for cracks in the hull
    N c. shift all personnel to the stern
    Y d. check the bilge drain plug

3208: Water pockets on the underside of an inflatable liferaft are for __________.

    N a. catching rain water
    Y b. stability
    N c. easy drainage
    N d. maneuverability

3245: 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-0115

    Y a. FWD 25'-02", AFT 29'-10"
    N b. FWD 25'-06", AFT 29'-06"
    N c. FWD 27'-10", AFT 26'-02"
    N d. FWD 29'-11", AFT 25'-04"

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

3487: Generally, what is used to inflate liferafts?

    Y a. non-toxic inert gas
    N b. Oxygen
    N c. Hydrogen
    N d. Carbon monoxide

3487: Generally, what is used to inflate liferafts?

    Y a. non-toxic inert gas
    N b. Oxygen
    N c. Hydrogen
    N d. Carbon monoxide

3613: You are in a survival craft broadcasting a distress message. What information would be essential to your rescuers?

    N a. The nature of the distress
    N b. The time of day
    N c. Your radio call sign
    Y d. Your position by latitude and longitude

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.

3946: Fusible-link fire dampers are operated by __________.

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

4015: The DEEP DRILLER, at 60.0 feet draft in sea water, has VM = 974,441 foot-long tons, LM = 40,301 foot-long tons, TM = 3 foot-long tons, FSML = 30,572 foot-long tons, and FSMT 18,732 foot-long tons. What is the KG corrected for transverse free surface effects?

    N a. 53.78 feet
    Y b. 54.82 feet
    N c. 55.47 feet
    N d. 56.01 feet

4023: Which devices may be used as part of an internal communication system on a towing vessel?

    N a. Sound-powered telephones
    N b. Portable radios
    N c. Either fixed or portable equipment
    Y d. All of the above

4074: The SS AMERICAN MARINER has the following drafts: FWD 08'-11.5", AFT 15'-11.5". 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-0153

    N a. 2.20 feet
    N b. 2.00 feet
    Y c. 1.80 feet
    N d. 1.65 feet

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

4225: The maximum transverse extension of the cantilever for the COASTAL DRILLER places the rotary __________.

    Y a. within 10 feet of the centerline
    N b. at the vessel TCG
    N c. at the leg centroid
    N d. 40 feet aft of the transom

4651: If you wear extra clothing when entering the water after abandoning a MODU it will __________.

    N a. weigh you down
    Y b. preserve body heat
    N c. reduce your body heat
    N d. make it more difficult to breathe

4701: After you activate your emergency position indicating radio beacon, you should __________.

    N a. turn it off for five minutes every half-hour
    N b. turn it off and on at five-minute intervals
    N c. turn it off during daylight hours
    Y d. leave it on continuously

4801: The COASTAL DRILLER is loaded as shown in the Sample Load Form #1 (Rig Move). What is the new VCG if the entire contents of drill water tanks 6 and 7 are discharged?

    N a. 38.00 feet
    N b. 48.38 feet
    Y c. 49.16 feet
    N d. 65.00 feet

5115: What kind of conditions would you observe as the eye of a storm passes over your MODU's position?

    Y a. Huge waves approaching from all directions, clearing skies, light winds, and an extremely low barometer
    N b. Flat calm seas, heavy rain, light winds, and an extremely low barometer
    N c. Flat calm seas, heavy rain, light winds, and high pressure
    N d. Huge waves approaching from all directions, clearing skies, light winds, and high pressure

5817: The two main types of load cells used in mooring tension gauges are __________.

    Y a. distortion and compression
    N b. hydraulic and mechanical
    N c. magnetic and applied torque
    N d. frictionless and hydraulic

5927: A fire main system must have enough fire hydrants so that each accessible space may be sprayed with __________.

    N a. a low velocity spray applicator
    N b. a water spray or solid stream
    Y c. at least two spray patterns of water
    N d. at least 25 psi delivered pressure

6501: At a refueling area or fuel facility, smoking or any flame or spark is prohibited __________.

    Y a. within 50 feet
    N b. anywhere on the helodeck
    N c. during refueling operations
    N d. within 100 feet

6655: Power operated cranes used on a MODU must not be powered by __________.

    N a. diesel engines
    N b. chargeable batteries
    N c. electric motors
    Y d. gasoline engines

6686: 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 salt water.

    N a. 13,175 tons
    N b. 13,350 tons
    N c. 13,490 tons
    Y d. 13,620 tons

6786: The color of the signal flare sent up by a submarine to indicate an emergency is __________.

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

7058: Blocking open or removing fire dampers can cause __________.

    N a. fixed foam systems to be ineffective
    N b. faster cooling of the fire
    N c. the accumulation of explosive gases
    Y d. the fire to spread through the ventilation system

8663: While the DEEP DRILLER is operating as shown in Sample Load Form #4 (Drilling), casing is accidentally dropped over the starboard side. If the starboard forward inclination is slowly increasing, which tank is probably damaged?

    Y a. 1S
    N b. 2S
    N c. 3S
    N d. 1P

8867: The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). Weather conditions make it necessary to ballast down to survival draft. It is decided to check the stability at the intermediate draft of 32 feet. How much ballast is required to ballast to 32 feet?

    N a. 2,094 long tons
    N b. 2,194 long tons
    Y c. 2,294 long tons
    N d. 3,294 long tons

9001: The difference between the starboard and port drafts caused by shifting a weight transversely is __________.

    Y a. list
    N b. heel
    N c. trim
    N d. flotation

9537: When the height of the metacenter is less than the height of the center of gravity of a vessel, the upright equilibrium position is __________.

    N a. stable
    N b. neutral
    Y c. unstable
    N d. negative

9587: The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). What is the new transverse free surface correction (FSCT) if the entire contents of Salt Water Ballast Tanks 1P and 1S are discharged?

    Y a. 0.46 foot
    N b. 0.71 foot
    N c. 1.08 feet
    N d. 1.44 feet

9605: The COASTAL DRILLER, in transit with winds less than 70 knots, has a draft of 10 feet 8 inches. The VM are 541,257 ft-kips, FSML are 32,000 ft-kips, and FSMT are 24,000 ft-kips. The margin on the maximum allowable KG is __________.

    N a. -2.3 feet
    N b. 0.0 feet
    Y c. 23.7 feet
    N d. 26.0 feet