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.


179: A vessel is floating at a mean draft of 14 feet. At this draft, the displacement is 6780 tons. The length of the vessel is 450 feet, beam is 50 feet, and TPI is 45.5. What is the KM? (See the P-K table in the blue pages of the Stability Data Reference Book)


294: If a receiving station cannot distinguish a signal sent by flag hoist it should __________.


515: Which statement is TRUE concerning the placard entitled "Discharge of Oil Prohibited"?


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

522: A spanner is a __________.

    N a. cross connection line between two main fire lines
    Y b. special wrench for the couplings in a fire hose line
    N c. tackle rigged to support a fire hose
    N d. None of the above

526: Motor-propelled lifeboats are required to have sufficient fuel to operate continuously at 6 knots for how many hours?

    N a. 6
    N b. 12
    N c. 18
    Y d. 24

761: Which when removed, will result in the extinguishment of a fire?

    Y a. Oxygen
    N b. Carbon dioxide
    N c. Sodium
    N d. Nitrogen

798: A fire starts in a switchboard due to a short circuit. This is which class of fire?

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

856: Which statement about immersion suits is TRUE?

    N a. Immersion suits should be worn during routine work on deck to provide maximum protection.
    N b. After purchasing, the suit should be removed from its storage bag and hung on a hanger where readily accessible.
    Y c. Immersion suits must have a PFD light attached to the front shoulder area.
    N d. Small leaks or tears may be repaired using the repair kit packed with the suit.

911: 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-0018

    N a. 3.75 feet
    N b. 3.02 feet
    Y c. 2.22 feet
    N d. 0.83 foot

919: After an accident the victim may go into shock and die. What should be done to help prevent shock?

    N a. Slightly elevate the head and feet.
    N b. Keep the person awake.
    Y c. Keep the person lying down and at a comfortable temperature.
    N d. Give the person a stimulant to increase blood flow.

951: If a crewman suffers a second-degree burn on the arm, you should __________.

    N a. drain any blisters
    N b. apply antiseptic ointment
    N c. scrub the arm thoroughly to prevent infection
    Y d. immerse the arm in cold water

1003: You are on a vessel that has a metacentric height of 4 feet, and a beam of 50 feet. What can you expect the rolling period of the vessel to be?

    N a. 10.0 seconds
    N b. 10.5 seconds
    Y c. 11.0 seconds
    N d. 11.5 seconds

1027: What is the most important characteristic of the extinguishing agent in fighting a class "C" fire?

    N a. Weight
    N b. Temperature
    Y c. Electrical nonconductivity
    N d. Cost

1048: The angle of maximum righting arm corresponds approximately to the angle of __________.

    Y a. deck edge immersion
    N b. the load line
    N c. downflooding
    N d. loll

1306: Water pockets on the underside of an inflatable liferaft are for __________.

    N a. catching rain water
    Y b. stability
    N c. easy drainage
    N d. maneuverability

1329: The sprinkler system of an enclosed lifeboat is used to __________.

    Y a. cool the craft in a fire
    N b. cool the engine
    N c. spray oil on the sea to calm it
    N d. spray personnel during a fire

1476: Your vessel has 3 lifeboats on each side. The aftermost boat on the starboard side is designated as boat number __________.

    N a. 6
    Y b. 5
    N c. 3
    N d. 3 STARBOARD

1538: Your oceangoing vessel is required to have a waste management plan. This plan must be in writing and describe procedures for __________.

    Y a. collecting and discharging garbage
    N b. disposing waste from marine sanitation devices
    N c. reducing the amount of shipboard waste
    N d. segregating the different types of shipboard waste

1577: What is the minimum number of bolts required in a temporary bolted flange oil hose coupling?

    N a. 3
    Y b. 4
    N c. 6
    N d. A bolt must be used in every hole.

1619: A conscious victim who has suffered a blow to the head has symptoms that indicate the possibility of concussion. If the patient feels no indication of neck or spine injury, recommended treatment would include __________.

    N a. turning the victim's head to the side to keep his airway open
    N b. positioning the victim so the head is lower than the body
    N c. giving the victim water if he is thirsty, but no food
    Y d. elevating the head and shoulders slightly with a pillow

1674: You are requisitioning stores for your tank vessel. What type of matches are permitted aboard?

    N a. Phosphorous
    Y b. Safety
    N c. Self-extinguishing
    N d. Wooden

1840: Your voyage planning indicates you will arrive at a waypoint in longitude 149°16.3'W at 0947 ZT on 3 March 1988. How should this date be entered into an AMVER report?

    N a. 030947W
    Y b. 031947Z
    N c. 031947 88
    N d. 03MAR1947Z

1863: On offshore drilling units, each storage battery for emergency lighting and power systems must be tested every six months under actual connected load for a period of at least __________.

    N a. 1 hour
    Y b. 2 hours
    N c. 3 hours
    N d. 4 hours

1878: The liquid mud tanks on your vessel measure 20'L by 18'B by 7'D. The vessel's displacement is 866 T and the specific gravity of the mud is 1.8. What is the reduction in GM due to 2 of these tanks being slack?

    N a. 0.24 foot
    N b. 0.56 foot
    N c. 0.95 foot
    Y d. 1.12 feet

1959: You have approximately 34 tons of fish on deck. What will be the shift in the center of gravity after you shift the fish to the fish hold, a vertical distance of 7.5 feet? (total displacement is 638 tons)

    N a. 0.1 foot
    N b. 0.2 foot
    N c. 0.3 foot
    Y d. 0.4 foot

2034: You have 12 containers of rig supplies each measuring 10'L by 4'B by 5'H and weighing 2.0 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? (D037DG )

    N a. 0.5 foot
    Y b. 0.9 foot
    N c. 1.1 feet
    N d. 1.6 feet

2213: When abandoning a MODU, after launching the survival craft you should __________.

    N a. plot a course for the nearest land
    N b. take a vote on which direction you should go
    Y c. stay in the immediate area
    N d. go in one direction until fuel runs out

2255: The survival capsule is manufactured with fire retardant __________.

    N a. foam
    N b. marine plywood
    N c. steel
    Y d. fiberglass

2389: The best way to test the INMARSAT-C terminal is to __________.

    N a. send a message to a shore terminal and wait for confirmation
    Y b. compose and send a brief message to your own INMARSAT-C terminal
    N c. send a message to another ship terminal
    N d. see if the send light flashes, then proper operation has been confirmed

2455: The element used to keep weight on the bit at a constant value in spite of up-and-down movement of a MODU during floating drilling operations is the heave or drill string __________.

    Y a. compensator
    N b. tensioner
    N c. stabilizer
    N d. equalizer

2492: At sea, you are approaching a small vessel and see that it has the signal flag "P" hoisted. What should you do?

    N a. Proceed on present course and speed since the vessel is stopped and making no way through the water.
    N b. Keep clear of the vessel because it has a diver down.
    N c. Attempt to call the vessel on VHF radiotelephone because someone on board requires medical assistance.
    Y d. Approach with caution because the vessel is a fishing vessel and its nets are fouled on an obstruction.

2536: To prevent the spread of fire by conduction you should __________.

    N a. shut off all electrical power
    N b. close all openings to the area
    Y c. cool the bulkheads around the fire
    N d. remove combustibles from direct exposure

2545: On a MODU crane, the boom indicator tells the operator what the boom angle is compared to the __________.

    N a. vertical position
    Y b. horizontal position
    N c. boom stop angle
    N d. minimum radius angle

2646: How many B-II fire extinguishers must be in the machinery space of a 175-foot long fishing vessel propelled by engines with 3200 brake horsepower?

    N a. 2
    N b. 3
    Y c. 4
    N d. 5

2883: Life jackets should be stowed in __________.

    N a. survival craft
    N b. messrooms
    Y c. readily accessible locations
    N d. locked watertight containers

3184: The center of buoyancy and the metacenter are in the line of action of the buoyant force __________.

    N a. only when there is positive stability
    N b. only when there is negative stability
    N c. only when there is neutral stability
    Y d. at all times

3195: 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-0113

    N a. FWD 18'-05", AFT 21'-05"
    N b. FWD 18'-00", AFT 21'-10"
    N c. FWD 18'-06", AFT 22'-01"
    Y d. FWD 17'-10", AFT 22'-00"

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

3228: A fuel line breaks, sprays fuel on the hot exhaust manifold, and catches fire. Your FIRST action should be to __________.

    N a. batten down the engine room
    N b. start the fire pump
    N c. apply carbon dioxide to the fire
    Y d. shut off the fuel supply

3230: Which statement is TRUE concerning a power driven fire pump on board a small passenger vessel?

    N a. The hand fire pump shall be located adjacent to the main engine spaces.
    N b. It shall be of at least 2 gallons per minute capacity.
    N c. It shall be painted red.
    Y d. It may also serve as a bilge pump.

3304: If your passenger vessel has been issued a stability letter, it must be __________.

    N a. filed in the ship's office
    N b. posted in a passenger area
    N c. posted adjacent to the Certificate of Inspection
    Y d. posted in the pilothouse

3311: 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-0121

    N a. Available GM 3.51 ft
    N b. Available GM 3.60 ft
    Y c. Available GM 3.98 ft
    N d. Available GM 4.28 ft

3401: While in port, what signal flag would inform the vessel's crew to report on board because the vessel was about to proceed to sea?

    Y a. "P"
    N b. "H"
    N c. "U"
    N d. "A"

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

3974: In the illustration, the sea anchor is shown as item number_____. (D014SA )

    N a. 7
    N b. 13
    N c. 15
    Y d. 14

4020: The control panel of a fire detection system must have all of the following EXCEPT _____________ .

    N a. a power-available light
    N b. an audible alarm to notify the crew and identify the origin of the fire
    N c. a means to silence audible alarms while maintaining visible alarm lights
    Y d. a way to bypass the entire panel if it malfunctions

4593: The COASTAL DRILLER, while drilling, has a total weight of 15,400 kips. The LCG is 120.00 feet AF0, and the TCG is -0.5 feet to port of the centerline. What is the port leg reaction?

    N a. 5,063 kips
    N b. 5,104 kips
    Y c. 5,233 kips
    N d. 5,345 kips

5467: What is an advantage of the 6x19 class of wire rope over the 6x37 class of wire rope of the same diameter?

    N a. Greater holding power
    N b. Better fatigue life
    N c. Resistance to elongation
    Y d. Resistance to corrosion

5605: The full period of motion of the DEEP DRILLER while tripping is 10 seconds and the maximum pitch angle as seen on the inclinometer is 4 degrees. From the standpoint of critical motion, the motion is __________.

    N a. unsatisfactory, place setback in the pipe racks
    Y b. satisfactory, continue tripping
    N c. unsatisfactory, deballast to survival draft
    N d. unsatisfactory, place unit in standby

5637: While in transit during heavy weather, the crew aboard a semisubmersible should be alert to repeated pounding of waves on the lower bracing. If necessary, the unit should be __________.

    N a. deballasted to a shallower draft
    Y b. ballasted to survival draft
    N c. ballasted to a draft in which the KG exceeds the maximum allowed
    N d. towed in the trough of the waves

5921: Multiple fire pumps may be used for other purposes provided that one pump is __________.

    N a. on line to the fire main
    Y b. kept available for use on the fire main at all times
    N c. capable of being connected to the fire main
    N d. rated at or above 125 psi

6507: Especially in adverse weather, risk of collision with an offshore supply vessel increases when the vessel is moored to what side of the unit?

    Y a. Upwind
    N b. Downwind
    N c. Crosswind
    N d. Downcurrent

6981: The emergency power system for the DEEP DRILLER should be placed in operation when the weather forecast predicts winds greater than 90 knots and when __________.

    Y a. evacuating the unit
    N b. ballasting
    N c. deballasting
    N d. unexpected list and trim exist

7317: When sending and receiving messages on the marine radio, confusion over unusual words can be avoided by using the __________.

    N a. delimiter switch
    Y b. standard phonetic alphabet
    N c. low power switch
    N d. high power switch

8187: The maximum variable load for the COASTAL DRILLER while elevated in a severe storm is __________.

    Y a. 2,381 kips
    N b. 3,381 kips
    N c. 7,099 kips
    N d. 21,297 kips

8923: The DEEP DRILLER is loaded as shown in Sample Load Form #4. While the unit is deballasting, port valve 5 fails in the closed position. You may deballast from tank 2P by pumping from tank 9P by also opening valves 6 and __________.

    N a. 35
    N b. 21
    Y c. 20
    N d. 8

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

9115: An airplane should NOT send which signal in reply to a surface craft?

    Y a. Opening and closing the throttle
    N b. Rocking the wings
    N c. Flashing the navigational lights off and on
    N d. Flashing Morse T

9597: The DEEP DRILLER is loaded as shown in the Sample Load Form #5 (Survival), when an unexpected, slowly increasing port list and bow down trim occurs. A leak in C1P is found. By deballasting from ballast tanks 2P and 3P, the inclination slowly decreases. The increase in the longitudinal free surface correction is __________.

    N a. 0.90 foot
    N b. 0.83 foot
    N c. 0.57 foot
    Y d. 0.49 foot