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.


316: The space containing the cylinders for the carbon dioxide(CO2) fire extinguishing system must be designed to preclude an anticipated ambient temperature over __________.


369: A cargo vessel of 9,000 tons displacement is carrying a slack deep tank of molasses (SG 1.4). The tank measures 20 feet long and 30 feet wide. What will be the reduction in metacentric height due to free surface, with the vessel floating in sea water (SG 1.026)?


435: If an emergency pump control is used as the emergency shutdown on a tank vessel, it must __________.


474: You are making ship-to-shore telephone calls on VHF. You should use the __________.

    Y a. VHF-FM service
    N b. coastal harbor service
    N c. high seas service
    N d. emergency broadcast service

644: The difference between the forward and aft drafts is __________.

    N a. list
    N b. heel
    Y c. trim
    N d. flotation

824: You receive a medical message that contains the code MSJ. This means "_____."

    Y a. Place patient in hot bath
    N b. The wound should be stitched
    N c. You should pass a stomach tube
    N d. The wound should not be stitched

977: Which type of fire is the foam (stored-pressure type) fire extinguisher effective on?

    Y a. Classes A & B
    N b. Classes A & C
    N c. Classes B & C
    N d. All of the above

1263: When chipping rust on a vessel, the MOST important piece of safety gear is __________.

    N a. a hard hat
    N b. gloves
    Y c. goggles
    N d. a long sleeve shirt

1334: An inflatable liferaft should be manually released from its cradle by __________.

    N a. cutting the straps that enclose the container
    N b. removing the rubber sealing strip from the container
    N c. loosening the turnbuckle on the securing strap
    Y d. pushing the button on the hydrostatic release

1420: Which statement about the pressure in a tank being inerted by an inert gas system is TRUE?

    N a. The maximum pressure permitted is 8 psi.
    Y b. A positive pressure should be maintained at all times.
    N c. The pressure must remain within the limits of +5 psi to -1 psi.
    N d. None of the above

1493: A new liferaft has been installed on your vessel. The operating cord should be __________.

    Y a. attached to the raft stowage cradle or to a secure object nearby with a weak link
    N b. checked to see that it's unattached
    N c. coiled neatly on the raft container
    N d. faked on deck and lead through a chock

1641: The most serious effect of air trapped in a non-treated diesel engine jacket water cooling system is that it __________.

    Y a. causes corrosion
    N b. reduces the ability of the system to cool the engine
    N c. can form pockets which block the flow of coolant through the system
    N d. accelerates formation of metal plating

1918: Which equipment is not a source of locating signals?

    N a. EPIRB's that transmit on 406 MHz
    Y b. Survival craft VHF transceivers that provide a beacon on 121.5 MHz
    N c. COSPAS-SARSAT EPIRBs
    N d. SARTs operating on 9 GHz

1993: The person in charge of a mobile offshore drilling unit must insure that __________.

    N a. the Muster List ("Station Bill") is approved by the Coast Guard
    Y b. the date of each fire extinguisher test is recorded
    N c. all personnel are trained to launch the survival craft
    N d. a fire drill is held at least once each day

2080: You have 260 tons of below deck tonnage including liquid mud. Your existing deck cargo is 150 tons with a VCG above the deck of 2.2 feet. What is the maximum additional cargo tonnage you are permitted to load? (See illustration D036DG, stability letter for M.V. Hudson.) (D036DG )

    N a. 110 tons
    N b. 140 tons
    N c. 180 tons
    Y d. 210 tons

2134: The flammable limits of gasoline are 1.3 to 7.6 percent volume of the air. You are testing a tank that contained gasoline by using a combustible gas indicator. Under testing, the tank sample registers 55 on the instrument. What is the concentration of gases?

    N a. 55%
    N b. 5.5%
    N c. 4.1%
    Y d. 0.7%

2182: Your drafts are: FWD 5'-08", AFT 6'-02". From past experience, you know that the vessel will increase her draft 1 inch for every 8 tons loaded. There is rig water on board and 11 tons of deck cargo. How many more tons of cargo can be loaded and still maintain the same trim? (D037DG )

    N a. None
    N b. 10 tons
    N c. 18 tons
    Y d. 24 tons

2208: Your 20-ton ketch-rigged sailing vessel is sailing close hauled on the port tack in a moderate breeze with all sails properly trimmed. You wish to bear off quickly to avoid a floating hazard. To utilize your sails to assist with the turn, you should __________.

    N a. slack the jib sheet
    Y b. slack the mizzen sheet
    N c. put your rudder hard to port
    N d. All of the above

2289: According to the Chemical Data Guide, what is the Reid Vapor Pressure of tert-butylamine?

    Y a. 11 (psig)
    N b. 12 (psig)
    N c. 13 (psig)
    N d. 14 (psig)

2331: What prevents water running along the shaft of a leaking centrifugal pump from entering the shaft bearing?

    N a. Shaft seal
    Y b. Water flinger
    N c. Drain hole
    N d. Lantern ring

2517: When may a personnel net be used to bring heavy equipment aboard an offshore drilling unit?

    N a. Only when the seas are calm
    N b. Only during rough weather
    N c. Only when there are no personnel in the net
    Y d. Never

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

2569: Your vessel's drafts are: FWD 22'-03", AFT 22'-09"; and the KG is 24.4 feet. What is the righting moment when the vessel is inclined to 15°? (Use the reference material in Section 1, the blue pages, of the Stability Data Reference Book)

    N a. 4,176 foot-tons
    Y b. 5,196 foot-tons
    N c. 7,076 foot-tons
    N d. 9,003 foot-tons

2619: 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-0073

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

2836: The remote control for a fixed fire extinguishing system should be __________. (Uninspected Vessel Regulations)

    Y a. painted red and labeled
    N b. concealed from the crew
    N c. protected by plexiglas
    N d. padlocked

2957: Your vessel's drafts are: FWD 21'-09", AFT 23'-03"; and the KG is 20.0 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the angle of list if the center of gravity is shifted 1.9 feet off the centerline.

    N a. 9°
    N b. 12°
    N c. 15°
    Y d. 19°

2961: The Certificate of Inspection issued to a vessel carrying more than six passengers must be __________. (small passenger vessel regulations)

    Y a. posted on board under glass, if practical
    N b. posted on the dock where passengers are embarked
    N c. retained at the owner's principal place of business
    N d. kept on file by the Collector of Customs

3019: All vessels not limited to daylight service shall be fitted with a ring life buoy __________. (small passenger vessel regulations)

    N a. on the stern of the vessel
    N b. with a twenty fathom line attached
    N c. with no line attached
    Y d. with a water light to be attached during nighttime operation

3155: The DEEP DRILLER, while loaded as shown in the Sample Load Form #4 (Drilling), suffers damage to the port center column below the waterline. Among the tanks from which you should pump is tank __________.

    N a. C1S
    N b. 9S
    Y c. 9P
    N d. 2S

3167: Topside icing that blocks freeing ports and scuppers __________.

    N a. is usually below the center of gravity and has little effect on stability
    N b. will cause water on deck to pocket and increase stability
    Y c. may decrease stability by increasing free surface effect due to water on deck
    N d. increases the effective freeboard and increases the wind-heel affect

3219: The final inspection responsibility for seeing that a tank barge is provided with the required equipment and fittings in good and serviceable condition prior to loading cargo rests with the __________.

    N a. terminal operator
    N b. owner of the barge
    Y c. tankerman or person in charge of loading
    N d. charterer through the Master of the towing vessel

3324: How should cargo tank hatches be protected when the ullage opening is open and the tank NOT gas free?

    N a. With gooseneck vents
    N b. With warning signs
    Y c. With flame screens
    N d. With pressure-vacuum relief valves

3418: Your 600 GT vessel must carry a line-throwing appliance if it is certificated for __________.

    N a. river service
    N b. Great Lakes service
    Y c. coastwise service
    N d. None of the above

3509: The maximum draft of the SS AMERICAN MARINER cannot exceed 30'-01" in order to cross a bar. The present drafts are: FWD 29'-04", AFT 30'-06". Use the white pages of the Stability Data Reference Book to determine the minimum amount of sea water to ballast the forepeak to achieve this condition.

    N a. 97 tons
    Y b. 100 tons
    N c. 103 tons
    N d. 106 tons

3532: Your vessel's existing draft is FWD 19'-08", AFT 20'-04". Using the Guidance Manual for Loading M.V. GRAND HAVEN, determine the new draft if 840 long tons are loaded in No. 1 hatch.

    N a. FWD 18'-08", AFT 21'-06"
    N b. FWD 18'-09", AFT 21'-07"
    N c. FWD 18'-11", AFT 21'-09"
    Y d. FWD 22'-00", AFT 19'-02"

3636: The SS AMERICAN MARINER has the following drafts: FWD 08'-11.5", AFT 15'-11.5". Upon completion of loading and bunkering the items listed will be on board. Use the white pages of The Stability Data Reference Book to determine the minimum GM required to meet a one compartment standard. ST-0144

    N a. 3.15 feet
    Y b. 3.00 feet
    N c. 2.90 feet
    N d. 2.80 feet

3915: The DEEP DRILLER, at a draft of 60 feet, has 35,000 ft-tons of longitudinal moments. How much ballast should be transferred between tanks 1P and 10P to level the unit longitudinally?

    Y a. 25.5 long tons
    N b. 50.2 long tons
    N c. 165.3 long tons
    N d. 330.2 long tons

4032: Towing vessel fire protection regulations require that all fuel tank vent pipes comply with all of the following provisions EXCEPT that the vent _______________ .

    N a. connects to the highest point of the tank
    N b. system discharges on a weather deck through a U-shaped 180 degree pipe bend
    N c. be fitted with a 30-by-30 corrosion resistant flame screen
    Y d. must have a positive-acting shut-off valve to prevent water from entering the tank in heavy weather

4062: The owner or Master of a towing vessel that is operating within a Vessel Traffic Service (VTS) area must report all of the following to VTS as soon as practicable EXCEPT ___________ .

    N a. any malfunction of propulsion machinery, steering gear, radar, gyrocompass or depth-sounder, if installed
    N b. shortage of personnel, lack of charts, maps or other required publications
    Y c. the type of license he/she holds and its serial number
    N d. any characteristics of the vessel that affect its maneuverability

4077: The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). What is the new longitudinal free surface correction (FSCL) if the entire contents of Salt Water Ballast Tanks 1P and 1S are discharged?

    N a. 1.06 feet
    Y b. 1.09 feet
    N c. 3.30 feet
    N d. 3.38 feet

4096: Which statement(s) is/are TRUE concerning radio equipment on towing vessels of 26 feet or more in length?

    N a. The vessel must have a ship-radio-station license issued by the FCC.
    N b. Each radio operator must hold an FCC-issued restricted operator's license, or higher.
    N c. Maintain a continuous listening watch on VHF channel 16 and the bridge-to-bridge channel.
    Y d. All of the above.

4251: What are the maximum acceptable levels of ice and snow accumulations on the COASTAL DRILLER?

    N a. 3 inches
    N b. 2 inches
    N c. 1 1/4 inches
    Y d. none

4264: Which statement about immersion suits is TRUE?

    Y a. Prior to abandonment, the suit allows body movement such as walking, climbing a ladder and picking up small objects.
    N b. The immersion suit seals in body heat and provides protection against hypoglycemia for weeks.
    N c. The suit is flameproof and provides protection to the wearer while swimming through burning oil.
    N d. The wearer of the suit is severely restricted and requires 1.5 times more time to climb a ladder than without the suit.

4621: On the COASTAL DRILLER, the start/stop station for the bilge pumps is located __________.

    N a. in the OIM's office
    N b. in the control house
    Y c. near the bilge pits
    N d. in the MCC

4775: 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 transverse moment would have to be created to level the unit in list at the new draft?

    N a. -3,604 ft-kips
    N b. -4 ft-kips
    Y c. 3,470 ft-kips
    N d. 7,088 ft-kips

5417: The COASTAL DRILLER, loaded as shown in the Sample Load Form #3 (Drilling), discharges the bulk in Bulk Tanks 1 and 2. What is the new LCG?

    Y a. 124.97 feet AFO
    N b. 125.09 feet AFO
    N c. 127.70 feet AFO
    N d. 130.42 feet AFO

5471: What is an advantage of the 6x37 class of wire rope over the 6x19 class of wire rope of the same diameter?

    Y a. Flexibility
    N b. Resistance to corrosion
    N c. Resistance to elongation
    N d. Lower weight per foot

5911: What information must be entered on the MODU's muster list?

    N a. Names of all crew members
    N b. Use and application of special equipment
    N c. Listing of approved emergency equipment
    Y d. Duties and station of each person during emergencies

6124: On a vessel of 7000 tons displacement, a tank 35 ft. long, 30 ft. wide and 4 ft. deep is half filled with fuel oil (S.G. 0.962) while the vessel is floating in saltwater (S.G. 1.026). What is the free surface constant for this tank?

    Y a. 2,109
    N b. 25,974
    N c. 31,328
    N d. 909,090

6493: A helicopter making a round trip from a helodeck with refueling capabilities to an unmanned platform will take 45 minutes each way. The helicopter should be carrying enough fuel to last __________.

    N a. 45 minutes
    N b. 1 hour and 15 minutes
    N c. 1 hour and 30 minutes
    Y d. 2 hours

6624: The color of the signal flare sent up by a submarine indicating that a torpedo has been fired in a training exercise is ___________,

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

6653: Diesel powered industrial trucks on a MODU that are provided with safeguards to the exhaust, fuel, and electrical systems are designated __________.

    N a. DEFE
    N b. DE
    Y c. DS
    N d. DES

6655: Power operated cranes used on a MODU must not be powered by __________.

    N a. diesel engines
    N b. chargeable batteries
    N c. electric motors
    Y d. gasoline engines

7061: The primary concern in aiding a back injury patient is __________.

    N a. relieving the patient's pain by giving aspirin or stronger medication
    Y b. avoiding possible injury to the spinal cord by incorrect handling
    N c. preventing convulsions and muscle spasms caused by the pain
    N d. providing enough fluids to prevent dehydration

7113: Fire extinguishers used on MODU's are numbered by size I through V, with I being __________.

    N a. used for electrical fires only
    Y b. the smallest
    N c. the most accessible
    N d. the most effective

7635: At an angle of loll, the righting arm (GZ) is __________.

    N a. maximum
    N b. negative
    N c. positive, but reflexive
    Y d. zero

8537: The full period of motion of the DEEP DRILLER while in transit is 7 seconds and the maximum pitch angle as seen on the inclinometers is 7°. From the standpoint of critical motion, the motion is __________.

    N a. satisfactory, keep the unit at transit draft
    N b. satisfactory, put the unit in standby
    Y c. unsatisfactory, ballast to survival draft
    N d. unsatisfactory, place unit in standby

9277: A floating jack-up with displacement of 15,000 kips has its LCG 108 feet aft of frame zero (AFO). If 400 kips are loaded at 120 feet AFO and 800 kips are loaded 150 feet AF0, what is the new LCG?

    N a. 100.0 feet
    N b. 109.2 feet
    Y c. 110.4 feet
    N d. 119.2 feet

9583: Each person on a MODU carrying immersion suits must wear the immersion suit in a boat drill, or participate in a drill which includes donning the suit and being instructed in its use at least once every __________.

    Y a. month
    N b. 2 months
    N c. 3 months
    N d. 6 months

9593: A semisubmersible floating in sea water displaces 717,500 cubic feet. What is the displacement?

    N a. 11,211 long tons
    N b. 11,498 long tons
    N c. 19,977 long tons
    Y d. 20,500 long tons