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.


154: The standard rate of signaling by flashing light is __________.


326: CO2 cylinders, which protect the small space in which they are stored must __________.


349: A marine radar system for surface navigation must be fitted on all ocean or coastwise vessels of over __________.


356: The number of pounds of carbon dioxide required for each cargo space on a cargo vessel is equal to __________.

    N a. the gross volume of the space in cubic feet divided by 100
    N b. one pound of CO2 per cubic foot of space
    N c. one pound of CO2 per square foot of deck area
    Y d. the gross volume of the space in cubic feet divided by 30

394: If you are transmitting a distress message by radiotelephone you should __________.

    Y a. use English language
    N b. always use the International Code
    N c. preface it by the word "Interco"
    N d. follow the transmission with the radio alarm signal

403: Due to the shape of the sea anchor, the best way to haul it back aboard is by __________.

    N a. hauling in on the anchor line as you would any anchor
    N b. getting all hands to assist
    Y c. its trip line
    N d. cutting the line, as you cannot haul it back in

415: What must ocean going vessels of 100 GT to 400 GT be fitted with for oily mixtures?

    N a. A fixed system to discharge the slops overboard
    Y b. A fixed system to discharge oily mixtures to a reception facility
    N c. A portable system to discharge the slops overboard
    N d. A portable system to discharge oily mixtures to a reception facility

456: On a vessel of 900 GT, the minimum number of fire axes required is __________.

    N a. 2
    N b. 4
    Y c. 6
    N d. 8

545: The oil transfer procedures aboard a tanker transferring oil are NOT required to contain __________.

    Y a. the name of each person designated as the person in charge of transfer
    N b. a line diagram of the vessel's oil transfer piping
    N c. special procedures for topping off tanks
    N d. a description of the deck discharge containment system

608: A fire of escaping liquefied flammable gas is best extinguished by __________.

    N a. cooling the gas below the ignition point
    N b. cutting off the supply of oxygen
    Y c. stopping the flow of gas
    N d. interrupting the chain reaction

777: On small passenger vessels a gasoline engine must be fitted with __________.

    N a. A means of backfire flame control
    N b. A lubricating oil pressure gauge and a tachometer
    N c. Jacket water discharge temperature gauges
    Y d. All of the above

844: If a crew member that was ill has died, which code should your message contain?

    N a. MPO
    Y b. MPR
    N c. MPK
    N d. MPJ

931: The major cause of shock in burn victims is the __________.

    N a. high level of pain
    N b. emotional stress
    N c. increase in body temperature and pulse rate
    Y d. massive loss of fluid through the burned area

1206: Inflatable liferafts are provided with a __________.

    N a. knife
    N b. towing connection
    N c. lifeline
    Y d. All of the above

1274: On inflatable liferafts, the operating cord should be renewed by __________.

    N a. cutting the old line off and renewing same
    Y b. an approved servicing facility ashore
    N c. opening the case and replacing the entire line
    N d. one of the ship's officers

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.

1423: A weight of 250 tons is loaded on your vessel 95 feet forward of the tipping center. The vessel's MT1 is 1000 ft-tons. What is the total change of trim?

    N a. 11.90 inches
    N b. 18.75 inches
    Y c. 23.75 inches
    N d. 38.01 inches

1465: Your vessel has 3 lifeboats on each side. The middle lifeboat on the port side is designated as boat number __________.

    N a. 2
    N b. 2 PORT
    N c. 3
    Y d. 4

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

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

1740: Tank vessel inerting refers to __________.

    N a. the introduction of inert gas into a tank with the object of reducing the oxygen content to below 8% by volume
    N b. the introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volume
    N c. the introduction of inert gas into a cargo tank during cargo discharge to replace the volume of discharged cargo
    Y d. All of the above

1776: Which type of vessel shall be required to have an emergency towing arrangement fitted at both ends?

    N a. A 30,000 dwt ton oil barge
    N b. An 18,000 dwt ton tanker constructed in 1998
    N c. A 5,000 dwt ton coastal tanker
    Y d. A 22,000 dwt ton tanker operated after Jan. 1, 1999

1792: For GMDSS, which statement concerning a compulsory vessel is FALSE?

    N a. A conditional or partial exemption may be granted, in exceptional circumstances, for a single voyage outside the sea area for which the vessel is equipped.
    Y b. Once a compulsory vessel's GMDSS station has been fitted and inspected, the station must be inspected only once every five years.
    N c. All passenger vessels regardless of size and all cargo vessels that are 300 Gross Tons or larger must comply.
    N d. Compulsory vessels must carry at least two licensed GMDSS Radio Operators for Distress and Safety radio-communications purpose..

1905: What fitting on the mast works in conjunction with the shrouds to control side bend of the mast?

    N a. Chainplate
    N b. Hound
    N c. Crowfoot
    Y d. Spreader

1930: You must ensure that lifesaving equipment is __________.

    N a. locked up
    Y b. readily accessible for use
    N c. inaccessible to passengers
    N d. on the topmost deck of the vessel at all times

2066: A boom vang __________.

    Y a. holds the boom down and flattens the main sail
    N b. draws the head of the sail to windward
    N c. tautens the standing rigging
    N d. douses the gaff topsail

2098: 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-0049

    Y a. 395 tons
    N b. 530 tons
    N c. 750 tons
    N d. 990 tons

2240: What is classified as a combustible liquid?

    N a. Acetaldehyde
    N b. Ethyl alcohol
    N c. Carbon tetrachloride
    Y d. Tetraethylene glycol

2465: The element that supports the weight of the drill stem, allows the drill stem to rotate, and provides a pressure-tight seal and passageway for the drilling mud to be pumped down the inside of the drill stem is called the __________.

    Y a. swivel
    N b. bail
    N c. kelly
    N d. cock

2468: What is NOT classified as a flammable liquid?

    N a. Methyl alcohol
    N b. Heptane
    Y c. Mineral spirits
    N d. iso-Hexane

2521: To enable tying down a helicopter on the landing area of a MODU, the landing deck must be fitted with __________.

    Y a. recessed tie down points
    N b. hydraulically lifted bitts
    N c. air tuggers
    N d. fixed cleats

2542: Your vessel's drafts are: FWD 21'-08", AFT 24'-02". 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 15 inches? (Use the selected stability curves in Section 1, the blue pages, of the Stability Data Reference Book)

    N a. 72 tons
    N b. 77 tons
    Y c. 82 tons
    N d. 87 tons

2659: 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-0074

    Y a. Available GM 4.3 ft
    N b. Available GM 4.1 ft
    N c. Available GM 3.9 ft
    N d. Available GM 3.6 ft

2771: The angle to which a floating MODU, with a negative initial metacentric height, lies while at rest in still water is the angle of __________.

    N a. trim
    N b. yaw
    N c. heel
    Y d. loll

3046: How long is the Certificate of Inspection issued to a 50 gross ton, passenger carrying vessel which is 60 feet (18 meters) in length valid? (small passenger vessel regulations)

    N a. One year
    N b. Two years
    Y c. Three years
    N d. Four years

3214: What does the "B" on a "B-II" fire extinguisher refer to? (Uninspected Vessel Regulations)

    N a. Size of the applicator
    N b. Size of the nozzle
    N c. Size of the extinguisher
    Y d. Class of fire that the extinguisher should be used on

3249: The SS AMERICAN MARINER has the liquid loading shown. Use the white pages of The Stability Data Reference Book to determine the LCG-FP of the liquid load. ST-0116

    Y a. 231.0 ft
    N b. 234.3 ft
    N c. 244.6 ft
    N d. 251.5 ft

3257: A semisubmersible with a displacement of 20,000 tons and a KG of 60.0 feet loads 300 tons at a VCG of 120 feet. To maintain draft, ballast is discharged from a height of 20 feet. What is the change in KG?

    Y a. 1.5 feet upward
    N b. 1.5 feet downward
    N c. 0.8 foot upward
    N d. 0.8 foot downward

3282: What form of venting of cargo tanks is allowed for a tank barge certificated to carry grade B petroleum products?

    N a. Gooseneck vents only
    N b. Gooseneck vents with flame screens
    Y c. Individual pressure-vacuum relief valves with flame screens
    N d. Straight vents with flame screens

3368: Your tow includes a barge carrying chlorine. Which special requirements must be observed?

    N a. The wing voids shall not be opened when underway.
    N b. You must post a deckhand to keep a special watch on this barge.
    Y c. A cargo information card for chlorine must be in the pilothouse.
    N d. All of the above

3434: The SS AMERICAN MARINER is ready to load the cargo listed. There is already 4260 tons of cargo on board with a KG of 25.8 feet. Use the white pages of the Stability Data Reference Book to determine the final KG of all the cargo after loading is completed. ST-0130

    N a. KG 24.6 feet
    N b. KG 25.0 feet
    N c. KG 25.4 feet
    Y d. KG 25.9 feet

3639: Which condition represents the appropriate time for setting off distress flares and rockets?

    Y a. Only when there is a chance of their being seen by rescue vessels
    N b. At half hour intervals
    N c. At one hour intervals
    N d. Immediately upon abandoning the vessel

3654: You are communicating on the radiotelephone using plain English. Which procedural word (proword) indicates that you have received another vessel's transmission?

    N a. Out
    N b. Over
    Y c. Roger
    N d. Wilco

3867: Each OSV must carry __________.

    N a. one category I 406 Mhz satellite EPIRB
    N b. at least one life buoy on each side of the vessel fitted with a buoyant life line
    N c. at least 12 rocket parachute flares
    Y d. All of the above

4153: The DEEP DRILLER is loaded as shown in the Sample Load Form #3 (Preparing to Drill). If all the liquid mud (see table 8) is dumped, what would be the new draft?

    N a. 60 feet 9.6 inches
    N b. 59 feet 2.7 inches
    N c. 57 feet 11.5 inches
    Y d. 56 feet 10.9 inches

4266: Which statement about immersion suits is TRUE?

    Y a. The suit must, without assistance, turn an unconscious person's mouth clear of the water within 5 seconds.
    N b. The immersion suit seals in body heat and provides protection against hypothermia for weeks.
    N c. The suit will still be serviceable after a brief (2-6 minutes) exposure to flame and burning.
    N d. The collar must be inflated before abandoning ship.

4764: You are scheduled to load 3700 tons of cargo, 45 tons of crew effects and stores and 427 tons of fuel. Use the blue pages of the Stability Data Reference Book to determine the vessel's mean draft in salt water.

    N a. 17'-01"
    Y b. 17'-05"
    N c. 17'-10"
    N d. 18'-00"

5753: The length of chain between the anchor and the end of the pendant line is called the __________.

    N a. pigtail chain
    N b. thrash chain
    Y c. crown chain
    N d. wear chain

6033: During a fire drill on a MODU, what action is required?

    Y a. Start each fire pump
    N b. Launch and run a lifeboat
    N c. Inventory rescue and fire equipment
    N d. Inspect fire hoses

6071: On offshore drilling units fitted with fixed CO2 systems, the system must withstand a bursting pressure of at least __________.

    N a. 5,000 pounds per square inch
    Y b. 6,000 pounds per square inch
    N c. 8,000 pounds per square inch
    N d. 10,000 pounds per square inch

6445: What is the function of wearing rings found on some centrifugal pumps?

    N a. Absorb erosion of high velocity discharge stream
    N b. Seal pump shaft against entry of air
    Y c. Isolate the outlet side from the inlet side
    N d. Dampen the turbulent discharge flow

6583: When weight-testing a davit-launched liferaft on a mobile offshore drilling unit, the test weight must be equivalent to the weight of the raft, its required equipment, and __________.

    N a. 90% of the allowed capacity of persons for the raft
    Y b. 100% of the allowed capacity of the persons for the raft
    N c. 110% of the allowed capacity of the persons for the raft
    N d. 120% of the allowed capacity of the persons for the raft

6603: A weathertight door on a MODU must not allow water to penetrate into the unit in __________.

    N a. 50 knot winds
    N b. 70 knot winds
    N c. 100 knot winds
    Y d. any sea condition

7093: Normal mouth temperature is __________.

    N a. 96.4°F
    N b. 97.5°F
    Y c. 98.6°F
    N d. 99.7°F

8535: You are transferring fuel from a supply vessel to your MODU. If you close off one tank in the line of tanks being filled, the rate of flow to other open tanks on the same line will __________.

    Y a. increase
    N b. decrease
    N c. stop
    N d. stabilize

9137: Fighting a fire in the galley poses the additional threat of __________.

    N a. contaminating food with extinguishing agent
    N b. spreading through the engineering space
    N c. loss of stability
    Y d. a grease fire in the ventilation system

9193: Drinking salt water will __________.

    N a. be safe if mixed with fresh water
    N b. prevent seasickness
    Y c. dehydrate you
    N d. protect against heat cramps

9285: A floating jack-up with displacement of 16,200 kips has its LCG 110.37 feet aft of frame zero (AF0). If 200 short tons are discharged from 120 feet AF0 and 400 short tons are discharged from 150 feet AF0, what is the new LCG?

    Y a. 108.0 feet
    N b. 109.2 feet
    N c. 110.4 feet
    N d. 115.8 feet

9321: In battery charging rooms, exhaust ventilation should be provided __________.

    N a. at the lowest point
    N b. near the batteries
    Y c. at the highest point
    N d. only when charging is in progress

9431: Subtracting FSCT from KGT yields __________.

    N a. BL
    N b. GMT
    N c. FSCT
    Y d. KG

9521: Aboard a vessel, dividing the sum of the vertical moments by the total weight yields the vessel's __________.

    Y a. height of the center of gravity
    N b. vertical moments
    N c. righting moments
    N d. inclining moments