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.


15: In reference to accidental oil pollution, the most critical time during bunkering is when __________.


65: The most serious effect of trapped air in a diesel engine jacket water cooling system is that it __________.


380: You are fighting a fire in a cargo hold on your vessel. Which action is most important concerning the stability of the vessel?


427: Radio station logs involving communications during a disaster shall be kept by the station licensee for at least __________.

    N a. 4 years from date of entry
    Y b. 3 years from date of entry
    N c. 2 years from date of entry
    N d. 1 year from date of entry

625: When the Captain of the Port or Officer in Charge, Marine Inspection issues an order of suspension to the operator of a vessel concerning oil transfer operations, it __________.

    N a. is always effective immediately
    Y b. includes a statement of each condition requiring corrective action
    N c. must be in writing before it takes effect
    N d. All of the above

736: How many liters of water per person must be carried in lifeboats on a tankship sailing a coastwise route?

    N a. None
    N b. One
    N c. Two
    Y d. Three

791: During a training exercise a submarine indicating that a torpedo has been fired will send up smoke from a float. The smoke's color will be __________.

    Y a. black
    N b. red
    N c. orange
    N d. yellow

959: 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-0020

    N a. 2.32 feet
    N b. 2.21 feet
    Y c. 1.97 feet
    N d. 1.76 feet

1116: Line throwing apparatus aboard ship must contain __________.

    N a. two rockets, one of which shall be the buoyant type
    N b. three rockets, one of which shall be the buoyant type
    Y c. four rockets, two of which shall be the buoyant type
    N d. five rockets, two of which shall be the buoyant type

1251: The proper stimulant for an unconscious person is __________.

    N a. tea
    N b. coffee
    N c. whiskey and water
    Y d. ammonia inhalant

1453: The hoods over galley ranges present what major hazard?

    Y a. Grease collects in the duct and filter and if it catches fire is difficult to extinguish.
    N b. In order to effectively draw off cooking heat they present a head-injury hazard to a person of average or more height.
    N c. They inhibit the effective operation of fire fighting systems in combating deep fat fryer or range fires.
    N d. They concentrate the heat of cooking and may raise surrounding flammable material to the ignition point.

1578: You may not act as person-in-charge of oil transfer operations on more than one vessel at a time __________.

    N a. under any circumstances
    Y b. unless authorized by the Captain of the Port
    N c. unless radio communication is set up between the vessels
    N d. unless the vessels are moored clear of all docks

1635: Which firefighting method is an example of an indirect attack on a fire?

    N a. Bouncing a straight stream of water off the overhead to create spray effect
    N b. Spraying foam on a bulkhead and letting it flow down and over a pool of burning oil
    Y c. Flooding a paint locker with CO2 and sealing the compartment
    N d. Cooling adjacent bulkheads with water to prevent the spread of the fire by conduction

1649: The sails are properly set and trimmed. As a vessel heads up from a beam reach to close hauled the __________.

    N a. true wind velocity increases
    N b. heeling moment decreases
    N c. side slip decreases
    Y d. jib sheet must be hardened up

1723: The regulations that were passed to implement MARPOL 73/78 concerning oil pollution apply to a U.S. flag vessel that sails on which waters?

    N a. Inland waters only
    N b. Great Lakes only
    Y c. International waters
    N d. All of the above

1849: Which line would NOT be used in handling a mainsail?

    N a. Halyard
    N b. Downhaul
    Y c. Uphaul
    N d. Sheet

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

2075: The SS NORTHLAND is loaded to drafts: FWD 28'-06", AFT 29'-10". The KG is 27.4 feet. Use the salmon pages of the Stability Data Reference Book to determine the angle of list if #6 starboard tank is fully loaded with 1624 tons of salt water ballast (VCG is 36.5 feet off the centerline).

    N a. 3.7°
    N b. 4.4°
    Y c. 5.0°
    N d. 6.5°

2122: Your drafts are: FWD 6'-00", AFT 6'-06". 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 17 tons of deck cargo. How many more tons of cargo can be loaded and still maintain the same trim? (D037DG )

    N a. 14 tons
    Y b. 18 tons
    N c. 24 tons
    N d. 33 tons

2197: A self-righting survival craft will return to an upright position provided that all personnel __________.

    Y a. are seated with seat belts on and doors shut
    N b. are seated with seat belts on and doors open
    N c. are to shift to one side to right it
    N d. escape from the craft

2358: Your vessel's drafts are FWD 20'-08", AFT 23'-00". Use the information in Section 1, the blue pages, of the Stability Data Reference Book to determine the final drafts if 195 tons of cargo are discharged 76 feet aft of amidships.

    N a. FWD 20'-05", AFT 21'-11"
    N b. FWD 20'-07", AFT 22'-01"
    Y c. FWD 20'-11", AFT 22'-00"
    N d. FWD 21'-03", AFT 22'-04"

2464: The SS AMERICAN MARINER has the liquid loading shown. Use the white pages of The Stability Data Reference Book to determine the KG of the liquid load. ST-0064

    N a. 3.9 feet
    Y b. 4.3 feet
    N c. 4.7 feet
    N d. 5.1 feet

2509: How many portable fire extinguishers are required in the cargo tank area of an unmanned tank barge during cargo transfer, if the barge has no cargo pumps of her own?

    Y a. One
    N b. Two
    N c. Three
    N d. None

2693: 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-0076

    N a. 1171.5 tons
    N b. 1311.0 tons
    N c. 1503.0 tons
    Y d. 1912.5 tons

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

2864: The sailing drafts are: FWD 22'-08", AFT 23'-04" and the GM is 4.6 feet. Use the information in Section 1, the blue pages, of the Stability Data Reference Book, to determine the available righting arm at 20° inclination.

    Y a. 2.1 feet
    N b. 2.4 feet
    N c. 2.8 feet
    N d. 3.2 feet

3361: The moment created by a force of 12,000 tons and a moment arm of 0.25 foot is __________.

    N a. 48,000 ft-tons
    N b. 6,000 ft-tons
    Y c. 3,000 ft-tons
    N d. 0 ft-tons

3425: What is the trim of a jack-up with a forward draft of 12 feet and an after draft of 13 feet?

    N a. 0.5 foot by the stern
    Y b. 1.0 foot by the stern
    N c. 2.0 feet by the stern
    N d. 0.5 feet by the head

3758: To treat a person suffering from heat exhaustion, you should __________.

    N a. administer artificial respiration
    N b. put him in a tub of ice water
    Y c. give him sips of cool water
    N d. cover him with a light cloth

3804: All OSV personnel should be familiar with survival craft __________.

    Y a. boarding and operating procedures
    N b. maintenance schedule
    N c. navigational systems
    N d. fuel consumption rates

4089: Which piece of navigational safety equipment is NOT required on towing vessels over 12 meters in length, provided that the vessel remains within the navigable waters of the U.S.?

    N a. VHF-FM radio(s)
    Y b. LORAN-C or GPS receiver
    N c. Charts or maps of the areas to be transited
    N d. Searchlight

4093: Towing vessels of more than 39.4 feet in length must carry charts or maps _____________ .

    N a. of the area to be navigated
    N b. with enough detail to make safe navigation possible
    N c. of the current edition or currently corrected edition
    Y d. All of the above

4142: 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 __________.

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

4143: While loaded as shown in the Sample Load Form #4 (Drilling), all of the liquid mud is dumped. What would be the new draft?

    Y a. 56.69 feet
    N b. 58.14 feet
    N c. 59.14 feet
    N d. 63.31 feet

4169: The color of the signal flares sent up by a submarine about to surface from periscope depth is __________.

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

4361: On the COASTAL DRILLER, hook load includes the weight of the __________.

    N a. setback load
    N b. rotary load
    N c. conductor tension
    Y d. drill string

4403: Scouring usually occurs with soils such as __________.

    N a. clay
    Y b. sand
    N c. coral
    N d. mud

4711: While loaded as shown in the COASTAL DRILLER sample load form #3 (drilling), 50 kips of tubulars are discharged from the cantilever starboard pipe racks. What is the change in the vessel's TCG?

    Y a. 0.048 foot port
    N b. 0.048 foot starboard
    N c. 1.020 feet port
    N d. 1.020 feet starboard

5041: When must a MODU display navigation lights while underway?

    N a. Only between sunrise and sunset
    N b. At all times while being towed
    N c. Only when other vessels are in sight
    Y d. Whenever visibility is restricted

5053: Which shape shown would be displayed by a mobile offshore drilling unit that is being towed more than 200 meters astern of a towing vessel? (DIAGRAM 16 )

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

5321: While the COASTAL DRILLER is in transit at a draft of 10 feet 6 inches, a severe storm is predicted within 12 hours. VM are 541,257 ft-kips, FSML are 32,000 ft-kips and FSMT are 24,000 ft-kips. How much should the KGL be lowered to satisfy the maximum allowable KG criteria?

    N a. 23.04 feet
    Y b. 1.96 feet
    N c. 0.62 foot
    N d. 0.00 feet

5533: Connecting elements of a mooring system should be fabricated from __________.

    N a. cast iron
    Y b. forged steel
    N c. stainless steel
    N d. cast steel

5585: Cable tension for catenary calculations is taken at the __________.

    N a. chain locker
    Y b. fairlead
    N c. anchor
    N d. contact point of chain with seabed

5627: For a semisubmersible moored in heavy weather conditions, the weather lines should be adjusted so that several lines carry about the same tension, and the leeward lines are __________.

    N a. tensioned to reduce weather mooring line tensions
    Y b. paid out to reduce weather mooring line tensions
    N c. adjusted so that at least 1,000 feet of chain lie along the bottom
    N d. adjusted so that the vertical component of chain tension at the lower fairlead is not excessive

5627: For a semisubmersible moored in heavy weather conditions, the weather lines should be adjusted so that several lines carry about the same tension, and the leeward lines are __________.

    N a. tensioned to reduce weather mooring line tensions
    Y b. paid out to reduce weather mooring line tensions
    N c. adjusted so that at least 1,000 feet of chain lie along the bottom
    N d. adjusted so that the vertical component of chain tension at the lower fairlead is not excessive

5824: The vertical distance between G and M is used as a measure of __________.

    N a. stability at all angles of inclination
    Y b. initial stability
    N c. stability at angles less than the limit of positive stability
    N d. stability at angles less than the downflooding angle

5941: Each fire hydrant serving machinery spaces containing oil fired boilers, internal combustion machinery, or oil fuel units must be equipped with a __________.

    N a. fireman's outfit
    Y b. low-velocity spray applicator
    N c. marine strainer
    N d. pick axe

6801: Where must the 0mster or person in charge of a MODU record the date of each test of emergency lighting and power systems and the condition and performance of the equipment?

    N a. On the Certificate of Inspection
    N b. On the Muster List ("Station Bill")
    N c. In the Operations Manual
    Y d. In either the official or unofficial log

7067: An effective method for moving patients with spinal injuries onto a spine board is known as the __________.

    N a. pack-strap carry
    N b. two man extremities carry
    N c. fireman's drag
    Y d. four man log roll

7075: Where there are multiple accident victims, which injuries should be the FIRST to receive emergency treatment?

    N a. Major multiple fractures
    N b. Eye injuries
    N c. Back injuries with spinal-cord damage
    Y d. Airway and breathing difficulties

7578: When a helicopter is lifting personnel from an enclosed lifeboat, the other individuals in the boat should __________.

    N a. enter the water in case the person being lifted slips from the sling
    N b. stand on the outside of the boat to assist the person being lifted
    N c. remove their life preservers to prepare for their transfer to the helicopter
    Y d. remain seated inside to provide body weight for stability

7601: At all angles of inclination, the true measure of a vessel's stability is the __________.

    N a. metacentric height
    N b. displacement
    Y c. righting moment
    N d. inclining moment

7675: To calculate the free surface correction, it is necessary to divide the free-surface moments by the __________.

    N a. total weight of liquid loads
    Y b. total displacement
    N c. lightweight
    N d. deadweight

8621: What is the transverse shift in the center of gravity if 200 short tons are placed 10 feet to port of the centerline on a MODU with TCG 0.7 foot starboard of the centerline, and the displacement is 9,000 short tons?

    N a. 0.03 foot
    N b. 0.20 foot
    Y c. 0.23 foot
    N d. 0.62 foot

8715: Starboard ballast pump #1 on the DEEP DRILLER has failed. To deballast from tank C2SA using starboard ballast pump #2, it is necessary to open the manual valve and which motor driven valves?

    Y a. 15, 34, 35, 36, 46, 48
    N b. 16, 27, 32, 35, 36, 48
    N c. 15, 33, 43, 48
    N d. 14, 34, 35, 36, 46, 48

8917: The DEEP DRILLER is loaded as shown in Sample Load Form #4 (Drilling). While the unit is deballasting, starboard valve 17 fails in the closed position. You may deballast from tank 8S by pumping from tank 9S and opening valves 18 and __________.

    N a. 35
    N b. 21
    Y c. 20
    N d. 17

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

9357: Halon extinguishers used on a class C fire should be directed at the __________.

    N a. base of the equipment
    N b. top of the equipment
    N c. power source
    Y d. source of the fire

9527: When the height of the metacenter is less than the height of the center of gravity, a vessel has which type of stability?

    N a. Stable
    N b. Neutral
    Y c. Negative
    N d. Positive

9528: You are in Inland Waters of the United States. You may discharge overboard __________.

    N a. bottles
    N b. metal
    N c. dunnage
    Y d. None of the above