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.


246: On a vessel of 125,000 GT on an international voyage, how many international shore connection flange(s) must be provided?


297: Which information is NOT required to be posted in or near the wheelhouse?


495: No vessel may use or carry an oil transfer hose unless it meets certain requirements. Which of the following is NOT among those requirements?


500: Safety shackles are fitted with __________.

    N a. a threaded bolt
    N b. a round pin, with a cotter pin
    Y c. a threaded bolt, locknuts, and cotter pins
    N d. round pins and locknuts

516: Which toxic gas is a product of incomplete combustion, and is often present when a fire burns in a closed compartment?

    N a. Carbon dioxide
    N b. Hydrogen sulfide
    Y c. Carbon monoxide
    N d. Nitric oxide

599: When starting CPR on a drowning victim, you should __________.

    N a. start chest compressions before the victim is removed from the water
    N b. drain water from the lungs before ventilating
    Y c. begin mouth-to-mouth ventilations as soon as possible
    N d. do not tilt the head back since it may cause vomiting

650: Which is an indication of reserve buoyancy?

    N a. Metacentric height
    N b. Righting moment
    N c. Rolling period
    Y d. Freeboard

898: A galley grease fire would be classified as which class of fire?

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

903: On a vessel displacing 8,000 tons, what is the reduction in metacentric height due to free surface when a tank 45 feet long and 45 feet wide is partly filled with salt water?

    Y a. 1.22 feet
    N b. 1.16 feet
    N c. 1.13 feet
    N d. 1.10 feet

905: The color of the signal flare sent up by a submarine coming to periscope depth is __________.

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

926: Inflatable liferafts must be overhauled and inspected at a U.S. Coast Guard approved service facility every __________.

    N a. six months
    Y b. twelve months
    N c. eighteen months
    N d. twenty-four months

943: You are at sea on a vessel that has a beam of 60 feet, and you calculate the period of roll to be 25 seconds. What is the vessel's metacentric height?

    N a. 0.8 ft
    Y b. 1.1 ft
    N c. 1.4 ft
    N d. 1.6 ft

1122: A combustible gas indicator will operate correctly ONLY when the __________.

    Y a. hydrocarbon content of the atmosphere is less than the U.E.L.
    N b. atmosphere is deficient in oxygen
    N c. compartment to be tested is free of CO2
    N d. All of the above

1125: What is the best procedure for picking up a lifeboat at sea while utilizing the lifeboat's sea painter?

    N a. Place the lifeboat ahead and to windward of your vessel with the wind about broad on the bow of your ship.
    Y b. Place the lifeboat ahead and to leeward of your ship with the wind about broad on the bow of your ship.
    N c. Place your ship to windward of the lifeboat with the wind on the quarter to allow your ship to drift down to the lifeboat.
    N d. Place the lifeboat ahead and to windward of your ship with the wind about broad on the quarter of your ship.

1335: What prevents an inflated liferaft from being pulled under by a vessel which sinks in water over 100 feet in depth?

    N a. The hydrostatic release
    N b. Nothing
    N c. A Rottmer release
    Y d. The weak link in the painter line

1355: As a vessel sinks to a depth of 15 feet, the hydrostatic trip releases the liferaft container from its cradle by __________.

    N a. breaking the weak link
    Y b. releasing the tie-down strap
    N c. pulling the operating cord
    N d. releasing the CO2 canister

1567: Your vessel is carrying 84,000 barrels of oil for discharge. The cargo hoses have an inside diameter of 14 inches. When four hoses are connected to the manifold, the container around the manifold must hold a total of how many barrels?

    N a. Three
    Y b. Four
    N c. Twelve
    N d. Sixteen

1599: All self-propelled vessels on an international voyage must be equipped with how many Emergency Position Indicating Radio beacons (EPIRB)?

    Y a. One approved Category 1 EPIRB
    N b. Three approved Category 1 EPIRBs
    N c. One approved Class B EPIRB
    N d. Two approved Class B EPIRBs

1608: Cold water, in commercial fishing, means water where the monthly mean low water temperature is normally __________.

    N a. 39°Fahrenheit or less
    N b. 44°Fahrenheit or less
    N c. 49°Fahrenheit or less
    Y d. 59°Fahrenheit or less

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

1678: Your vessel is 79 feet long with 20 people aboard. The coaming of a deck above the lowest weather deck (except an exposed forecastle deck) must be at least __________.

    N a. 6" high
    N b. 12" high
    N c. 24" high
    Y d. Not required

1804: Your vessel displaces 869 tons and measures 136'L x33'B. You ship a large wave on the after deck which measures 52'Lx 33'B. The weight of the water is estimated at 52.8 tons. What is the reduction in GM due to free surface before the water drains overboard?

    Y a. 4.83 feet
    N b. 5.12 feet
    N c. 5.46 feet
    N d. 5.85 feet

1889: How can rescue personnel detect that a SART is transmitting in the immediate vicinity?

    Y a. The SART's blips on the PPI will become arcs and eventually become concentric circles.
    N b. The DSC unit will react to the SART's signal and respond with the two-tone alarm.
    N c. The SART can provide an approximate location to within a two nautical mile radius, per IMO standards.
    N d. The SART signal appears as a target which comes and goes; the effect of heavy swells on a SART.

1946: You have 8 containers of steward's supplies each measuring 6'L by 6'B by 6'H and weighing 1.5 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? (Refer to trim and stability letter for M.V. Surveyor.) (D037DG )

    N a. 1.00 foot
    N b. 1.33 feet
    Y c. 1.48 feet
    N d. 2.00 feet

1990: What product is considered a noxious liquid substance for regulatory purposes?

    N a. Acetonitrile
    N b. Molten sulfur
    Y c. Dodecanol
    N d. Soybean oil

2009: Your vessel measures 114 feet long by 16 feet in beam. If the natural rolling period at a draft of 5'-06" is 6 seconds, what is the GM?

    Y a. 1.38 feet
    N b. 1.53 feet
    N c. 1.76 feet
    N d. 1.98 feet

2087: The davit aboard a MODU is used to __________.

    N a. lower personnel down by a transfer basket
    N b. lower food and water to personnel in a liferaft
    Y c. lower the liferaft down with its full complement
    N d. move equipment around the deck

2148: Your vessel's drafts are FWD 19'-03", AFT 21'-07". Use the information in Section 1, the blue pages, of the Stability Data Reference Book to determine the final drafts if 142 tons of fuel are pumped 86 feet aft.

    Y a. FWD 18'-09", AFT 22'-01"
    N b. FWD 19'-00", AFT 21'-01"
    N c. FWD 19'-00", AFT 21'-08"
    N d. FWD 19'-01", AFT 21'-04"

2219: Each buoyant work vest must be __________.

    Y a. U.S. Coast Guard approved
    N b. marked with the name of the vessel
    N c. equipped with a water light
    N d. All of the above

2283: Sails may be wing and wing when_____________.

    N a. tacking
    N b. on a close reach
    Y c. sailing with the wind aft
    N d. anchored or drifting

2356: Your vessel's drafts are: FWD 22'-04", AFT 21'-06". Use the information in Section 1, the blue pages, of the Stability Data Reference Book to determine the final drafts if: (1) 300 tons are loaded 122 feet forward of amidships; (2) 225 tons are loaded 150 feet aft of amidships; and 122 tons of fuel are pumped 72 feet aft.

    Y a. FWD 22'-11", AFT 22'-09"
    N b. FWD 23'-00", AFT 23'-00"
    N c. FWD 23'-02", AFT 23'-01"
    N d. FWD 23'-03", AFT 23'-05"

2476: Which tank barges require draft marks?

    N a. Notch barges over 1000 GT
    N b. Tank barges over 100 GT
    N c. Tank barges over 50 GT
    Y d. All tank barges

2570: What is NOT a requirement of the reinspection for a tank barge with a certificate of inspection valid for two years?

    Y a. The reinspection will be made between the fourteenth and sixteenth months.
    N b. The inspector shall examine all accessible parts of the vessels's hull.
    N c. The inspector shall examine the vessel's machinery as well as equipment.
    N d. The scope of the reinspection shall be the same as for the inspection for certification, but in less detail.

2598: A vessel displaces 12,000 tons and has a KG of 22.8 feet. What will be the length of the remaining righting arm at an angle of inclination of 60° 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)

    N a. -1.6 feet
    N b. -0.1 foot
    N c. 1.2 feet
    Y d. 1.9 feet

2649: Vinyl chloride reacts dangerously with __________.

    N a. alkalies
    Y b. concentrated nitric acid
    N c. saltwater
    N d. organic acids

2776: The lubber's line of a magnetic compass __________.

    N a. always shows true north direction
    Y b. indicates the vessel's heading
    N c. is always parallel to the vessel's transom
    N d. is located on the compass card

3002: A vessels Certificate of Inspection will show the __________. (small passenger vessel regulations)

    N a. crew requirements
    N b. minimum fire fighting and lifesaving equipment
    N c. route permitted
    Y d. All of the above

3113: For a MODU with trim, an increase in GMT will cause the inclination to __________.

    N a. stabilize at an angle of loll
    Y b. decrease
    N c. increase
    N d. remain constant

3400: How should the number "9" be pronounced when spoken on the radiotelephone?

    N a. NEW-MER-AL-NINER
    N b. NUM-BER-NINE
    Y c. NO-VAY-NINER
    N d. OK-TOH-NINE

3511: The lightweight transverse moments for the DEEP DRILLER are __________.

    N a. 680,914 ft-long tons
    N b. 9,733 ft-long tons
    Y c. -5,937 ft-long tons
    N d. 000 ft-long tons

3667: The principal action in changing from transit to survival draft in the event heavy weather threatens is __________.

    Y a. ballasting
    N b. deballasting
    N c. disconnecting
    N d. hanging off

3707: While loaded as shown in Sample Load Form #5 (Survival), an estimated 250 long tons of snow and ice accumulates on the DEEP DRILLER at an estimated height of 127 feet. Assuming no corrective ballasting, what is the new draft?

    N a. 48'-06"
    N b. 47'-03 1/2"
    Y c. 46'-09 3/4"
    N d. 44'-06"

4187: The DEEP DRILLER is drilling at 60 feet draft at a corrected KG of 54.0 feet. Ballast added or discharged to remain at a constant draft is at a VCG of 10 feet. How much non-liquid load would have to be removed from an average height of 130 feet above the keel to meet the maximum allowable KG at a draft of 60 feet for winds greater than 70 knots?

    N a. 1283 long tons
    N b. 817 long tons
    N c. 679 long tons
    Y d. 302 long tons

4435: The COASTAL DRILLER has sufficient reserve stability to overcome damage due to flooding of any one watertight compartment in winds to __________.

    N a. 36 knots
    Y b. 50 knots
    N c. 70 knots
    N d. 100 knots

4705: What is the weight of 100 barrels of 17 pound per gallon drilling mud?

    N a. 24.9 kips
    N b. 41.5 kips
    Y c. 71.4 kips
    N d. 93.0 kips

4784: If there's a fire aboard your vessel, you should FIRST __________.

    Y a. sound the alarm
    N b. notify the Coast Guard
    N c. have passengers put on life preservers
    N d. cut off air supply to the fire

4785: What should you do with your emergency position indicating radio beacon if you are in a liferaft in a storm?

    Y a. Bring it inside the liferaft and leave it on.
    N b. Bring it inside the liferaft and turn it off until the storm passes.
    N c. Leave it outside the liferaft and leave it on.
    N d. Leave it outside the liferaft but turn it off.

4795: The COASTAL DRILLER is loaded as shown in the Sample Load Form #1 (Rig Move). What is the new LCG if the entire contents of drill water tanks 6 and 7 are discharged?

    N a. 118.20 feet
    N b. 119.44 feet
    Y c. 120.10 feet
    N d. 121.36 feet

5192: There is a fire aft aboard your vessel. To help fight the fire, you should __________.

    N a. put the wind off either beam
    N b. put the stern into the wind and decrease speed
    N c. put the stern into the wind and increase speed
    Y d. head the bow into the wind and decrease speed

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

6617: On offshore drilling units, sleeping spaces for the regular personnel employed on board may not berth more than __________.

    N a. two persons
    N b. three persons
    Y c. four persons
    N d. five persons

6733: The person in charge of a MODU shall insure that the fuel tank of each motor propelled lifeboat is emptied, and the fuel is changed at least once every __________.

    N a. 3 months
    N b. 6 months
    Y c. 12 months
    N d. 24 months

6772: Your drafts are: FWD 23'-03", AFT 27'-01". Use the blue pages of the Stability Data Reference Book to determine the vessels displacement if you are in salt water.

    N a. 12,750 tons
    N b. 12,900 tons
    Y c. 13,150 tons
    N d. 13,250 tons

6917: Injuries resulting in loss of life or incapacitation, aboard vessels, must be reported to the __________.

    N a. Minerals Management Service
    N b. American Petroleum Institute
    Y c. U.S. Coast Guard
    N d. International Association of Drilling Contractors

6947: Which record must be retained on board after a report of casualty to a MODU?

    N a. Preventive maintenance log
    Y b. Storage plans
    N c. Oil Record Book
    N d. Repair record book

6957: Regulations require certain records to be retained on board for at least 3 months after a MODU is involved in a casualty or until advised that they are no longer needed on board by the __________.

    N a. owner
    N b. Master
    N c. person in charge
    Y d. Officer in Charge, Marine Inspection

7843: After putting on a self-contained breathing apparatus, you open the air supply and hear a continuous ringing of a bell. What does this mean?

    N a. The unit is working properly.
    N b. The face mask is not sealed properly.
    Y c. The air bottle needs to be refilled.
    N d. The air supply hose has a leak.

8735: The DEEP DRILLER is loaded as shown in Sample Load Form #4 (Drilling). What would be the new sum of FSML for Fresh Water if the entire contents of Drill Water Tank #5P are transferred to Tank #5S?

    N a. 3,645 ft-tons
    N b. 3,328 ft-tons
    Y c. 317 ft-tons
    N d. 0 ft-tons

8751: When threatened with a severe storm while operating in 250 feet of water, the COASTAL DRILLER should be placed at an air gap of __________.

    N a. 35 feet
    N b. 32 feet
    N c. 30 feet
    Y d. 25 feet

9457: The center of buoyancy is located at the __________.

    N a. geometric center of the waterplane area
    N b. intersection of the vertical centerline and line of action of the buoyant force
    N c. center of gravity of the vessel corrected for free surface effects
    Y d. geometric center of the displaced volume