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.


51: On cargo and miscellaneous vessels what is NOT a required part of the fireman's outfit?


412: To get low-velocity fog from an all-purpose nozzle, you would __________.


496: The lifeboat releasing gear lever should be marked with the words __________.


712: Which statement is TRUE concerning the application of foam on an oil fire?

    N a. It cools the surface of the liquid.
    N b. It gives protection to fire fighting personnel against the heat of the fire.
    Y c. It forms a smothering blanket on the surface of the oil.
    N d. It should be used at the same time a solid stream of water is being applied.

995: If you receive a message "A243" by any method of signaling, it would be referring to __________.

    Y a. bearing
    N b. altitude
    N c. diving
    N d. speed

1015: Which group should be used to send the signal Longitude 109°34'West?

    N a. D0934
    N b. LO10934W
    Y c. G10934
    N d. L10934

1156: Which statement is TRUE concerning the testing of the line-throwing appliance?

    N a. It shall be fired at least once in every three months.
    Y b. A drill in its use shall be held once in every 3 months.
    N c. Drills shall be held quarterly and it shall be fired annually.
    N d. No drills are required.

1286: The inside light in an inflatable liferaft is turned on __________.

    Y a. automatically as the liferaft inflates
    N b. with a switch near the boarding handle
    N c. at night because the light has a photosensitive switch
    N d. by screwing the bulb in after the raft is inflated

1480: You are on a supply run to an offshore drilling rig. On board is the cargo listed. What is the height above the main deck of the center of gravity of the cargo? ST-0039

    N a. 2.23 feet
    N b. 1.93 feet
    N c. 1.82 feet
    Y d. 1.38 feet

1505: What is one of the FIRST things you would do on boarding an inflatable liferaft?

    N a. Open equipment pack.
    N b. Post a lookout.
    N c. Issue anti-seasickness medicine.
    Y d. Pick up other survivors.

1754: A large metallic device, mounted directly in the piping (usually located at the dock near the point where the vapor hose is attached), designed to prevent the passage of a rapidly moving flame through the piping is called a __________.

    N a. flame arrestor
    N b. flame screen
    Y c. detonation arrestor
    N d. detonation blocker

1860: You are underway at sea when a fire is reported in the forward part of the vessel. The wind is from dead ahead at 20 knots. You should __________.

    N a. remain on course and hold speed
    N b. change course to put the wind on either beam and increase speed
    Y c. change course and put the stern to the wind
    N d. remain on course but decrease speed

1869: The three corners of the main sail are called __________. (D002SL )

    N a. head, fore, and aft
    N b. luff, leech, and spar
    N c. headboard, foot, and tail
    Y d. head, tack, and clew

1991: It is the responsibility of the person in charge to __________.

    N a. revise the operating manual when rig personnel change
    Y b. be fully aware of the provisions in the operating manual
    N c. maintain the rig's construction portfolio
    N d. All of the above

2056: By regulation, cargo tank atmosphere must be inert before and during which operation?

    N a. Stripping
    N b. Loading
    N c. crude oil washing
    Y d. All of the above

2254: According to the Chemical Data Guide, 1,3 - pentadiene possesses which characteristic?

    N a. Colorless liquid, mild aromatic odor
    N b. Pale yellow liquid, strong odor
    Y c. Colorless liquid, faint odor
    N d. Straw-colored liquid, sweet-odor

2288: A major health hazard of the product tert-butylamine is that it______.

    N a. can be absorbed through the skin
    Y b. causes irreversible damage to eye tissue
    N c. is a very unstable product
    N d. All of the above

2344: Use the material in Section 1, the blue pages, of the Stability Data Reference Book. If the KG is 25.2 feet, and the drafts are: FWD 22'-03", AFT 23'-01"; at what angle will the vessel lose positive stability?

    N a. 92°
    N b. 77°
    Y c. 68°
    N d. 61°

2469: According to the regulations, cargo pumprooms on tank vessels (constructed in 1965) handling grade C liquid cargo shall have power ventilation systems which can completely change the air in __________.

    N a. 1 minute
    Y b. 3 minutes
    N c. 5 minutes
    N d. 10 minutes

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

2522: What best describes benzene?

    N a. Clear colorless liquid with an acrid odor
    Y b. Clear colorless liquid with an aromatic odor
    N c. Brownish liquid, odorless
    N d. Brownish liquid, with an acrid odor

2527: The SS AMERICAN MARINER is loaded with the cargo shown. Use the white pages of The Stability Data Reference Book to determine the amount of liquid loading required in the double bottom tanks to meet a one compartment standard. ST-0070

    N a. 1171.5 tons
    N b. 1311.0 tons
    Y c. 1503.0 tons
    N d. 1710.5 tons

2638: Marine Safety Information is promulgated via satellite through which system?

    N a. AMVER
    Y b. SafetyNET
    N c. NAVTEX
    N d. INMARSAT-M SES

2698: Using a sea anchor will __________.

    Y a. reduce your drift rate
    N b. keep the liferaft from turning over
    N c. aid in recovering the liferaft
    N d. increase your visibility

2757: A simplified construction plan may be included in the MODU construction portfolio provided it adequately defines the __________.

    Y a. areas where special materials are used
    N b. hazardous areas
    N c. location of emergency repair equipment
    N d. type and strength of materials used

2787: You are on a commercial fishing vessel 78 feet long. At least one of your ring buoys or throwable flotation devices must have a line of what minimum length attached?

    N a. 60 feet
    N b. 70 feet
    N c. 80 feet
    Y d. 90 feet

2819: Distress flares and smoke signals are not required on vessels operating on short runs. A "short run" is limited to __________. (small passenger vessel regulation)

    N a. water of less than 20 feet in depth
    N b. where land is always in sight
    N c. no more than 5 miles
    Y d. about 30 minutes away from the dock

2913: The SS AMERICAN MARINER arrived in port with drafts of: FWD 21'-09.5", AFT 22'-09.5". Cargo was loaded and discharged as shown. Use sheet 2 in the white pages of The Stability Data Reference Book to determine the final drafts. ST-0087

    N a. FWD 21'-06.3", AFT 22'-06.6"
    Y b. FWD 21'-11.3", AFT 23'-01.8"
    N c. FWD 22'-06.6", AFT 21'-06.9"
    N d. FWD 23'-00.2", AFT 22'-00.4"

2939: How many distress flares and smoke signals are small passenger vessels on oceans, coastwise or Great Lakes routes required to carry?

    Y a. Six red hand flares and six orange smoke signals in a watertight container
    N b. Two ring life buoys with attached water lights
    N c. A battery operated red-flasher lantern
    N d. All of the above

3052: Which statement is TRUE concerning work vests on a small passenger vessel?

    N a. They may be worn during drills
    N b. They may be substituted for up to 10% of the required life jackets on board
    N c. They need not be an approved type
    Y d. They must be stowed separately from approved life jackets

3204: In accordance with SOLAS, the batteries that power interior lighting in inflatable liferafts can be made to last longer by __________.

    N a. unscrewing the bulb during the daylight
    Y b. switching the light on only when necessary
    N c. taking no action as there is no way on saving power
    N d. taking no action as they shut off automatically in daylight

3217: Which of the devices listed will prevent an inflated liferaft from being pulled under by a vessel which sinks in water over 100 feet deep?

    N a. The hydrostatic release
    N b. A shear pin
    N c. A rottmer release
    Y d. A weak link in the painter

3247: A semisubmersible with displacement of 19,700 long tons and KG of 50.96 feet loads 300 long tons of barite into P-tanks located 120 feet above the keel. What is the change in KG?

    N a. 0.79 foot upward
    N b. 1.00 foot upward
    Y c. 1.04 feet upward
    N d. 1.83 feet upward

3253: A semisubmersible displacing 17,600 long tons has an LCG 3.2 feet forward of amidships. Bulk, weighing 400 long tons, is loaded into P-tanks located 50.8 feet aft of amidships. What is the new LCG?

    N a. 0.80 foot forward of amidships
    N b. 1.20 feet forward of amidships
    Y c. 2.00 feet forward of amidships
    N d. 4.40 feet forward of amidships

3301: A semisubmersible, while floating level, displaces 25,000 long tons. LCG is 2 feet forward of amidships. Bulk, weighing 300 long tons, is placed in P-tanks located 50 feet aft of amidships. What is the new LCG?

    N a. 1.43 feet forward of amidships
    Y b. 1.38 feet forward of amidships
    N c. 0.62 foot forward of amidships
    N d. 0.57 foot forward of amidships

3403: The COASTAL DRILLER has a trim of 2.13 feet by the stern. The draft at the forward draft marks is observed to be 8.0 feet. The draft at the center of flotation is __________.

    N a. 7.00 feet
    N b. 8.58 feet
    N c. 9.00 feet
    Y d. 9.42 feet

3457: Using a sea anchor will __________.

    Y a. reduce your drift rate
    N b. keep the liferaft from turning over
    N c. aid in recovering the liferaft
    N d. increase your visibility

3512: You have sent a visual signal to an aircraft. The aircraft then flies over your position on a straight course and level altitude. What should you do?

    Y a. Repeat your signal.
    N b. Send any more signals necessary.
    N c. Change course to follow the airplane.
    N d. Prepare for a helicopter pickup.

3552: You are communicating by radiotelephone using the International Code of Signals. What is the correct method of sending the group 1.3?

    N a. "Wun point tree"
    N b. "Unaone point tercetree"
    Y c. "Unaone decimal terrathree"
    N d. "One decimal three"

3731: If the DEEP DRILLER is damaged, the unit is designed to avoid downflooding in wind speeds up to __________.

    Y a. 50 knots
    N b. 70 knots
    N c. 90 knots
    N d. 100 knots

4098: Which publication(s) must a towing vessel of 12 meters or more in length carry when operating on US waters other than the Western Rivers?

    N a. US Coast Pilot(s)
    N b. Tide Tables and Tidal Current Tables
    N c. Notice to Mariners
    Y d. All of the above

4168: The color of the signal flares sent up by a submarine surfacing from periscope depth is __________.

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

4423: While in ocean transit, the COASTAL DRILLER experiences a single amplitude roll of 5 degrees. What is the minimum roll period that does not exceed the design limits of the legs?

    N a. 2.7 seconds
    N b. 4.0 seconds
    N c. 6.5 seconds
    Y d. 7.2 seconds

4535: The sounding level of 17 lb. per gallon mud in mud pit 2S of the COASTAL DRILLER is 7.75 feet. What are the transverse moments for this mud?

    N a. 896 ft-kips
    N b. 913 ft-kips
    Y c. 1139 ft-kips
    N d. 1161 ft-kips

4677: The COASTAL DRILLER is loaded as shown in the Sample Load Form #1 (Rig Move). If the contents of #6 and #7 drill water tanks are discharged, what is the new height of the center of gravity corrected for transverse free surface effects?

    N a. 47.49 feet
    N b. 49.16 feet
    Y c. 50.82 feet
    N d. 50.93 feet

5068: The SS AMERICAN MARINER is ready to bunker with drafts of FWD 19'-00", AFT 24'-00". 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-0171

    N a. 0.62 foot
    N b. 0.80 foot
    Y c. 0.85 foot
    N d. 0.99 foot

5307: The COASTAL DRILLER, in ocean transit at a draft of 10 feet 6 inches with winds greater than 70 knots, has a KGT of 38.7 feet and a KGL of 38.2 feet. The margin on the maximum allowable KG is __________.

    N a. 26.8 feet
    N b. 26.3 feet
    N c. 1.8 feet
    Y d. 1.3 feet

5708: On a vessel of 6500 tons displacement, a tank 30 ft. long, 32 ft. wide and 18 ft. deep is half filled with liquid cargo (S.G. 1.048) while the vessel is floating in saltwater (S.G. 1.026). What is the free surface constant for this tank?

    N a. 1152
    N b. 1336
    Y c. 2390
    N d. 2731

5708: On a vessel of 6500 tons displacement, a tank 30 ft. long, 32 ft. wide and 18 ft. deep is half filled with liquid cargo (S.G. 1.048) while the vessel is floating in saltwater (S.G. 1.026). What is the free surface constant for this tank?

    N a. 1152
    N b. 1336
    Y c. 2390
    N d. 2731

5721: Deficient oxygen content inside a chain locker can be detected with __________.

    N a. litmus paper
    N b. combustible gas indicator
    N c. oxygen breathing apparatus
    Y d. oxygen indicator

6503: If, during helicopter refueling operations, fuel is spilled on clothing, the person should first __________.

    N a. see the medic immediately
    N b. spray himself with foam or CO2
    N c. complete his task and then see the medic
    Y d. remove the clothing and wash

6737: Each EPIRB required on a MODU 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

6785: Each EPIRB required on a MODU shall be stowed in a manner which will permit __________.

    N a. easy access to its storage compartment
    N b. replacement of the battery without exposure to the weather
    Y c. it to float free if the unit sinks
    N d. it to remain attached to the unit

6913: According to regulations, a Master or person in charge of a MODU is required to submit a report of a loss of life __________.

    N a. only when it happens while underway
    N b. to the next of kin
    Y c. to the nearest Marine Safety or Marine Inspection Office
    N d. to the nearest coroner

8763: After deploying the anchor, a permanent chain chaser is __________.

    N a. removed from the anchor chain
    N b. connected to a buoy at the anchor
    Y c. stripped back to the rig and secured
    N d. connected to a buoy halfway down the chain

9091: The outlet at a fire hydrant may be positioned anywhere from horizontal to pointing __________.

    N a. 45° upward
    N b. vertically upward
    Y c. vertically downward
    N d. all of the above

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

9511: In the absence of external forces, the center of buoyancy of an inclined vessel is vertically aligned directly below the __________.

    Y a. center of gravity
    N b. amidships station
    N c. center of flotation
    N d. geometric center of the waterplane area

9581: The C02 flooding system is actuated by a sequence of steps which are __________.

    Y a. break glass, pull valve, break glass, pull cylinder control
    N b. sound evacuation alarm, pull handle
    N c. open bypass valve, break glass, pull handle
    N d. open stop valve, open control valve, trip alarm

9681: What is the minimum period of time that the air supply for a self-contained breathing apparatus is required to last?

    N a. 10 minutes
    N b. 15 minutes
    Y c. 30 minutes
    N d. 45 minutes