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.


292: High-velocity fog __________.


319: Foam is effective in combating which class(es) of fire?


509: Placing a lashing across a hook to prevent a fitting from slipping out of the hook is called __________.


707: If your bridge-to-bridge radiotelephone ceases to operate, you must __________.

    N a. immediately anchor your vessel and arrange for repairs to the system
    N b. moor your vessel at the nearest dock available and arrange for repairs to the system
    N c. arrange for the repair of the system to be completed within 48 hours
    Y d. exercise due diligence to restore the system at the earliest practicable time

742: An advantage of an ABC dry chemical over a carbon dioxide extinguisher is __________.

    N a. lack of toxicity
    Y b. the multipurpose extinguishing ability
    N c. burn-back protection
    N d. cooling ability

1071: Aboard small passenger vessels, which material may be used for diesel fuel line installations but not for gasoline fuel lines?

    N a. Annealed copper tubing
    N b. Nickel-copper tubing
    N c. Copper-nickel tubing
    Y d. Seamless steel pipe or tubing

1172: What could result in an incorrect oxygen concentration reading on the oxygen indicator?

    N a. Exposure to carbon dioxide for no more than 1 minute
    Y b. Exposure to carbon dioxide for more than 10 minutes
    N c. Exposure to a very low concentration of sulfur dioxide for no more than 2 minutes
    N d. None of the above

1203: You are discharging cargo and the inert gas system is in operation to inert the tanks. The pressure in a tank being discharged starts to drop below the allowable limit. What action should you take?

    N a. Cut in another IG fan to increase gas flow.
    N b. Open the pressure control valve until the pressure increases.
    N c. Open the tank isolation valve to the fully open position.
    Y d. Reduce the pumping rate.

1210: The tricing pendants should be released __________.

    N a. before the gripes are removed
    N b. before loading the passengers
    Y c. after loading the passengers
    N d. after the boat is afloat

1361: What is the minimum diameter allowed for bilge piping on small passenger vessels which are more than 65 feet in length?

    N a. 1"
    Y b. 1-1/2"
    N c. 2"
    N d. 2-1/2"

1367: Determine the free surface constant for a fuel oil tank 30 ft. long by 40 ft. wide by 15 ft. deep. The specific gravity of the fuel oil is .85 and the ship is floating in saltwater (S.G. 1.026).

    N a. .83
    N b. 42.7
    Y c. 3787
    N d. 4571

1390: Which sequence is correct when launching a lifeboat stowed in gravity davits?

    N a. Release gripes, turn on emergency disconnect switch, release frapping lines
    N b. Release tricing pennants, turn on emergency disconnect switch, release frapping lines
    N c. Operate limit switches, release gripes, lift brake
    Y d. Release gripes, lift brake, release tricing pennants

1451: Before counterflooding to correct a list, you must be sure the list is due to __________.

    N a. negative GM
    N b. flooding
    Y c. off-center weight
    N d. reserve buoyancy

1456: You are reading the draft marks. The water level is at the bottom of number 11. What is the draft? (D032DG )

    N a. 11'-06"
    Y b. 11'-00"
    N c. 10'-09"
    N d. 10'-06"

1511: Which step should normally be taken FIRST by those who have boarded a liferaft in an emergency?

    N a. Ration food and water supplies.
    Y b. Take anti-seasickness pills, if available.
    N c. Determine position and closest point of land.
    N d. Check pyrotechnic supplies.

1643: On a MODU with lifeboats stowed in two different locations, if all the lifeboats are lost in one location then the remaining lifeboats must accommodate what percentage of the persons permitted on board?

    N a. 50%
    N b. 75%
    N c. 90%
    Y d. 100%

1681: An LWT anchor often has difficulty tripping in __________.

    N a. sand
    Y b. soft soil
    N c. stiff clay
    N d. heterogeneous soil

2264: Where a propeller shaft passes through the hull, water is prevented from entering by means of a __________.

    Y a. stuffing box
    N b. propeller boss
    N c. seacock
    N d. stop-water

2628: What normally helps in detecting escaping gas?

    N a. Running hand along pipe
    N b. Red flame
    Y c. Odor
    N d. Increase the line pressure

2686: Which tank barges require draft marks?

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

2690: Heavy fuel oils when spilled are __________.

    N a. more harmful to sea life than lighter oils
    N b. easier to clean up than lighter refined oils
    Y c. less harmful to sea life than lighter oils
    N d. not a real threat to marine life

2707: 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-0078

    N a. Available GM 3.8 ft
    N b. Available GM 3.6 ft
    N c. Available GM 3.3 ft
    Y d. Available GM 3.1 ft

2866: If a vessel is not equipped with an automatically-activated emergency lighting system, the vessel must be __________. (small passenger vessel regulations)

    N a. operated only in daylight hours
    N b. provided with gasoline or kerosene lights
    N c. equipped with luminous tape markings on emergency equipment
    Y d. equipped with individual battery-powered lights

2920: You have loaded a deck cargo, and the vessel has assumed an 8° list due to negative GM. Your salt water drafts are: FWD 16'-02", AFT 16'-06". If you then load 1200 tons of cargo in the lower holds (VCG 12 feet) and take on 624 tons of bunkers (VCG 2.5 feet), what is the final GM? (Use the reference material in Section 1, the blue pages, of the Stability Data Reference Book)

    Y a. 2.0 feet
    N b. 2.6 feet
    N c. 3.0 feet
    N d. 3.4 feet

2979: Which vessel is required to carry a Category I, 406 MHz EPIRB installed to automatically float free and activate? (small passenger vessel regulations)

    N a. A vessel operating exclusively on inland waters
    N b. A vessel limited to 20 miles offshore, which carries a radiotelephone on board
    Y c. A vessel operating on the high seas or beyond 3 miles from the coastline of the Great Lakes
    N d. A vessel limited to 100 miles offshore

3014: Using the information in Section 1, the blue pages, of the Stability Data Reference Book, determine the danger angle for permanent list if the KG is 21.8 feet and the drafts are: FWD 19'-05", AFT 20'-01".

    N a. 52°
    N b. 45°
    N c. 31°
    Y d. 26°

3306: 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-0120

    N a. FWD 26'-09", AFT 28'-05"
    Y b. FWD 26'-05", AFT 28'-07"
    N c. FWD 26'-04", AFT 28'-10"
    N d. FWD 26'-00", AFT 29'-00"

3332: When fueling has been completed __________.

    N a. the fuel tank fill pipe should be left open to allow vapors to vent from the tank
    N b. the engine should be started immediately to prevent vapor lock in the fuel line
    Y c. all hatches should be opened and all compartments should be ventilated
    N d. open the fuel line and drain a small amount of gasoline into the bilge to clear the line of sediment

3415: A vessel has a strong wind on the port beam. This has the same affect on stability as __________.

    Y a. weight that is off-center to starboard
    N b. increasing the draft
    N c. reducing the freeboard
    N d. increasing the trim

3445: The DEEP DRILLER, at a draft of 55 feet, has a KGT of 53.05 feet and TCG of 0.5 foot to starboard. What is the list angle?

    N a. 2.0°Starboard
    Y b. 2.9°Starboard
    N c. 3.2°Starboard
    N d. 3.5° starboard

3492: Your vessel's existing draft is FWD 17'-03", AFT 18'-09". Using the Guidance Manual for Loading M.V. Grand Haven, determine the new draft if 450 long tons are loaded in No. 16 hatch.

    N a. FWD 16'-11", AFT 19'-04 2/3"
    N b. FWD 17'-01", AFT 18'-11 1/4"
    Y c. FWD 17'-04", AFT 19'-03 3/4"
    N d. FWD 17'-07", AFT 18'-11 1/4"

3505: The lightweight vertical moments for the DEEP DRILLER are __________.

    Y a. 680,914 ft-long tons
    N b. 9,733 ft-long tons
    N c. -5,937 ft-long tons
    N d. -6,716 ft-long tons

3523: Among the equipment included in the DEEP DRILLER lightweight are the loading hoses, traveling block in the lowest position, anchors, mooring chain, all machinery with liquids to normal operating level, and __________.

    Y a. derrick
    N b. lower hull fuel
    N c. eight anchor buoys
    N d. normal food supplies for 79 persons

3541: The DEEP DRILLER as currently configured is limited to a maximum drilling depth of __________.

    N a. 18,400 feet
    N b. 20,600 feet
    N c. 22,800 feet
    Y d. 25,000 feet

3794: During an abandonment or drill, the first person to arrive at the survival craft should __________.

    N a. pass out food and water to personnel
    N b. open the doors and start the sprinkler system
    N c. activate the emergency release handle
    Y d. open the doors and prepare the craft for boarding

3854: According to the regulations, the capacity of a liferaft is required to be marked __________.

    N a. on the Muster List ("Station Bill")
    Y b. at the liferaft stowage location
    N c. on the Certificate of Inspection
    N d. in the Operations Manual

3938: You have abandoned ship in rough weather. After picking up other survivors in your liferaft, what should you do next?

    Y a. Close up the entrances.
    N b. Top up the buoyancy tubes.
    N c. Prepare for the arrival of rescue units.
    N d. Decide on food and water rations.

3938: You have abandoned ship in rough weather. After picking up other survivors in your liferaft, what should you do next?

    Y a. Close up the entrances.
    N b. Top up the buoyancy tubes.
    N c. Prepare for the arrival of rescue units.
    N d. Decide on food and water rations.

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

4152: Coast Guard Regulations require that OSV's under 100 GT must have a steering system that is capable of moving the rudder __________.

    N a. by a required auxiliary steering system under emergency conditions when duplicated main steering power systems are provided
    N b. at one-half the maximum astern speed without damage
    Y c. from 35° on one side to 30° on the other side, in no more than 28 seconds, while making maximum headway
    N d. from 15° on one side to 15° on the other side, in 30 seconds at 7 knots, or one-half the maximum speed

4164: The color of the signal flares sent up by a submarine about to surface from periscope depth is __________.

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

4457: Prior to entering a davit-launched liferaft, you should make sure that __________.

    Y a. the liferaft is well ventilated of excess carbon dioxide
    N b. all personnel have removed their life preservers to facilitate boarding
    N c. the door flap has been cut away and stowed inside the raft
    N d. All of the above

4527: The sounding for Drill Water Tank #18 for the Coastal Driller is 1.25 feet. It is decided to fill the tank. What is the vertical center of gravity for the added liquid?

    Y a. 3.13 feet
    N b. 2.50 feet
    N c. 1.87 feet
    N d. 0.63 foot

4616: You are scheduled to load 4700 tons of cargo, 45 tons of crew effects and stores and 323 tons of fuel. Use the blue pages of the Stability Data Reference Book to determine the vessel's mean draft in salt water.

    Y a. 19'-00"
    N b. 19'-04"
    N c. 19'-09"
    N d. 20'-01"

4627: On the COASTAL DRILLER, except when pumping from a tank, the bilge system valves should be __________.

    N a. cracked open
    N b. in the check-stop position
    N c. opened for draining
    Y d. closed

4631: On the COASTAL DRILLER, in case the bilge discharge is oily, the bilge water should be discharged through the __________.

    N a. overboard discharge
    N b. dump valves
    Y c. skimmer tank
    N d. sump valves

4746: The SS AMERICAN MARINER is ready to bunker with drafts of FWD 12'-07", AFT 16'-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-0167

    N a. 1.30 feet
    Y b. 1.07 foot
    N c. 0.96 foot
    N d. 0.82 foot

4773: The COASTAL DRILLER is loaded as shown in the Sample Load Form #1 (Rig Move). If the entire contents of bulk tanks #2 and #3 are back-loaded to an offshore supply vessel, what longitudinal moment would have to be created to level the unit in trim at the new draft?

    N a. 25,846 ft-kips
    N b. 17,119 ft-kips
    N c. 8,727 ft-kips
    Y d. 1,788 ft-kips

5297: Among the possible causes of unexpected rapidly increasing inclination of the DEEP DRILLER while in transit is __________.

    N a. consumption of on board variables
    N b. miscalculation of loads
    N c. external environmental forces
    Y d. flooding due to lower-hull damage

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

5495: Extended cyclical variations in tensions will cause an anchor chain to break due to __________.

    Y a. fatigue
    N b. corrosion
    N c. distortion
    N d. abrasion

6225: The procedure of strengthening damaged structures on a MODU by using wood or steel is called __________.

    N a. bracing
    N b. battening
    N c. blocking
    Y d. shoring

6387: The vertical height and density of the drilling fluid are used to determine the __________.

    N a. casing size
    Y b. hydrostatic pressure of the drilling fluid
    N c. presence of hydrogen sulfide gasses
    N d. diameter of the well

6553: While taking on fuel oil from an offshore supply vessel, the transfer hose leaks, causing a sheen in the water. You should __________.

    N a. continue transfer operations
    N b. repair the leak with duct tape
    N c. reduce the rate of transfer
    Y d. immediately shut down operations

7007: What precaution should be taken when treating burns caused by contact with dry lime?

    N a. Water should be applied in a fine spray.
    N b. The burned area should be immersed in water.
    N c. The entire burn area should be covered with ointment.
    Y d. Before washing, the lime should be brushed away gently.

7413: Which spoken emergency signal would you use to call a boat to come assist a man overboard?

    N a. Distress signal
    Y b. Urgency signal
    N c. Safety signal
    N d. None of the above

7785: The result of multiplying a weight by a distance is a __________.

    Y a. moment
    N b. force
    N c. couple
    N d. center of gravity location

8201: While on an ocean tow, the COASTAL DRILLER is threatened with the approach of a severe storm. Including the time required to place the generators on-line, the approximate time required to lower the legs from a TOC (tip-of-can) position of 12.38 feet to 60.5 feet is __________.

    N a. 8 minutes
    N b. 32 minutes
    N c. 40 minutes
    Y d. 47 minutes

8994: Two types of anchor shackles which are currently available are __________.

    N a. U-Type and posilok shackles
    N b. C-Type and wedge shackles
    Y c. D-Type and bow shackles
    N d. wedge and kenter shackles

9445: The difference between the height of the metacenter and the height of the center of gravity is known as the __________.

    Y a. metacentric height
    N b. height of the righting arm
    N c. fore and aft perpendicular
    N d. height of the center of buoyancy