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.


50: What is not usually a concern when loading a single-hulled tanker?


151: 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-0002


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)


182: Which abbreviation refers to the horizontal distance between perpendiculars taken at the forward-most and the after-most points on a small passenger vessel's waterline at her deepest operating draft?

    Y a. LBP
    N b. LOA
    N c. LWL
    N d. LLL

227: The Emergency Position Indicating Radio beacon on a cargo vessel must be stowed __________.

    N a. in an inside passageway
    N b. in an approved bracket
    N c. so that it is accessible from the bridge of the vessel
    Y d. so that it will float free if the vessel sinks

304: What is the correct interpretation of the flag hoist F 2 1 3 second substitute?

    Y a. F2131
    N b. F2132
    N c. F213213
    N d. F213F213

719: A fire hose has a __________.

    N a. male coupling at both ends
    N b. female coupling at both ends
    N c. female coupling at the nozzle end and a male coupling at the hydrant end
    Y d. male coupling at the nozzle end and a female coupling at the hydrant end

732: Which statement(s) is(are) TRUE concerning the use of dry chemical extinguishers?

    Y a. You should direct the spray at the base of the fire.
    N b. You should direct the spray directly into the fire.
    N c. You should direct the spray at a vertical bulkhead and allow it to flow over the fire.
    N d. All of the above

786: Which statement is TRUE concerning distress signals in a lifeboat?

    Y a. Hand held flares and orange smoke signals are required.
    N b. If hand-held rocket-propelled parachute flares are provided, they are the only distress signals required.
    N c. Two hand-held smoke signals shall be provided.
    N d. A Very pistol with twelve flares is required.

914: What is the lifesaving signal for "You are seen - Assistance will be given as soon as possible"?

    N a. Red star rocket
    Y b. Orange smoke signal
    N c. Green star rocket
    N d. Vertical motion of a flag

952: Which is the proper method of determining whether a portable CO2 fire extinguisher needs recharging?

    N a. Check the tag to see when the extinguisher was last charged.
    N b. Release a small amount of CO2; if the CO2 discharges, the extinguisher is acceptable.
    Y c. Weigh the extinguisher and compare the weight against that stamped on the valve.
    N d. Recharge the extinguisher at least once each year.

1002: How do you operate a portable CO2 fire extinguisher?

    N a. Point the horn down.
    N b. Turn cylinder upside-down.
    N c. Break the rupture disc.
    Y d. Pull pin, squeeze grip.

1014: Which signal would be used by a shore rescue unit to indicate "Landing here highly dangerous"?

    N a. The firing of a white star signal
    Y b. Horizontal motion with a white flag
    N c. Vertical motion of a white light
    N d. Code letter "K" by blinker light

1025: Which group should be used to send the signal "Latitude 73°25'North"?

    N a. G17325N
    Y b. L7325N
    N c. LA7325N
    N d. N7325

1095: When launching a lifeboat, frapping lines should be rigged __________.

    N a. before the gripes are released
    N b. before the boat is moved from the davits
    Y c. at the embarkation deck
    N d. after the boat is in the water

1107: In the production of chemical foam by a continuous-type generator __________.

    N a. the maximum water pressure to be used is 50 psi
    Y b. the speed of foam production is slower at lower water temperatures
    N c. each pound of foam powder produces about 800 gallons of chemical foam
    N d. fresh water only should be used

1119: A fill pipe for a gasoline tank on board a small passenger vessel must be __________.

    N a. arranged so neither liquid gasoline nor its vapors can overflow or escape inside the vessel
    N b. terminated on the weather deck and extend to within one-half of its diameter from the bottom of the tank
    N c. fitted with a suitably marked watertight deck plate or screw cap
    Y d. All of the above

1131: If you observe any situation which presents a safety or pollution hazard during fuel transfer operations, what action should you take FIRST?

    N a. Close the valves at the transfer manifold
    N b. Notify the person in charge of the shore facility
    Y c. Shut down the transfer operation
    N d. Sound the fire alarm

1188: The most effective way to apply a foam stream if the fire is on deck or is a running fire, is to direct the stream __________.

    N a. onto the surface of the burning liquid
    Y b. ahead of the burning liquid and bounce it on the fire
    N c. at the base of the burning liquid in a sweeping motion
    N d. just above the surface of the burning liquid

1349: What type of liquid is used in the liquid P/V breaker?

    N a. Hydraulic oil
    Y b. Water-antifreeze mixture
    N c. Distilled water
    N d. Oil from the cargo

1401: Which statement about transmitting distress messages by radiotelephone is INCORRECT?

    N a. Distress messages should first be transmitted on 2182 kHz.
    Y b. It is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds duration.
    N c. If no answer is received on the designated distress frequencies, repeat the distress call on any frequency available.
    N d. Channel 16 (156.8 MHz) may be used for distress messages.

1424: Halon gas will decompose and may form very hazardous toxic fumes when discharged __________.

    Y a. directly on flames
    N b. at room temperature
    N c. in an extremely cold climate
    N d. None of the above

1541: Which would be considered pollution under the U.S. water pollution laws?

    N a. Garbage
    N b. Hazardous substances
    N c. Oil
    Y d. All of the above

1743: Introducing inert gas into a tank already inert with the object of further reducing the oxygen or hydrocarbon content to prevent combustion if air enters the tank is called __________.

    Y a. purging
    N b. gas freeing
    N c. gas dispersion
    N d. bonding

1757: You are operating a liftboat. Before starting jacking operations you should __________.

    N a. put the crane in a vertical position
    N b. close the wheelhouse doors
    Y c. have all personnel don life jackets
    N d. put a watch in the engineroom

1757: You are operating a liftboat. Before starting jacking operations you should __________.

    N a. put the crane in a vertical position
    N b. close the wheelhouse doors
    Y c. have all personnel don life jackets
    N d. put a watch in the engineroom

1799: Each inert gas system gas main must have an automatic shut down valve at the outlet of the gas production plant. This valve must close automatically upon __________.

    N a. cargo pump failure
    Y b. blower failure
    N c. deck seal low water level
    N d. low inert gas temperature

1834: The liquid mud tanks on your vessel measure 20'L by 18'B by 7'D. The vessel's displacement is 986 T and the specific gravity of the mud is 1.6. What is the reduction in GM due to 2 of these tanks being slack?

    N a. .09 foot
    N b. .45 foot
    Y c. .88 foot
    N d. 1.35 feet

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

1885: In the case of an injury causing a person to be incapacitated, the Master or person in charge of a mobile offshore drilling unit must submit a report to the __________.

    Y a. nearest Marine Safety or Marine Inspection Office
    N b. nearest hospital
    N c. Department of Energy
    N d. American Bureau of Shipping

1927: On offshore drilling units, the minimum number of inclined ladders which must be fitted between each weather deck is __________.

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

2085: An offshore drilling unit must have enough inflatable liferafts to accommodate at least what percentage of the persons allowed?

    N a. 20%
    N b. 30%
    N c. 50%
    Y d. 100%

2478: Depending on its concentration, which product(s) can be classified as either grade D or E?

    N a. Sulfuric acid
    Y b. Formaldehyde solutions 37% to 50%
    N c. 1,1,1-trichloroethane
    N d. All of the above

2658: As a vessel changes course to starboard, the compass card in a magnetic compass __________.

    N a. first turns to starboard then counterclockwise to port
    N b. also turns to starboard
    N c. turns counterclockwise to port
    Y d. remains aligned with compass north

2863: You are berthed at a cargo facility where you have just completed discharging a dangerous cargo from your barge. You must complete topside repairs on the barge involving hot work before sailing. Which statement is TRUE?

    N a. You can make repairs with permission of the facility owner since you are empty and the cargo is on the facility.
    N b. The repair area must be inspected by a marine surveyor to ensure that it can be done safely.
    N c. Hot work repairs at such a facility are prohibited.
    Y d. The Captain of the Port may give specific approval to make hot work repairs.

2967: When a wind force causes a floating MODU to heel to a static angle, the __________.

    N a. centers of buoyancy and gravity are in the same vertical line
    Y b. righting moment equals the wind-heeling moment
    N c. downflooding point is below water
    N d. deck-edge immersion occurs

2987: For a MODU with trim, a decrease in GMT will cause the angle of inclination to __________.

    Y a. increase
    N b. decrease
    N c. remain constant
    N d. stabilize at an angle of loll

3011: A semisubmersible which will not remain upright and will assume a list either to port or starboard is likely to have __________.

    N a. a large TCG
    Y b. a negative GM
    N c. excessive ballast
    N d. insufficient deck load

3102: Which type of fixed fire-extinguishing system is approved for use on board uninspected vessels? (Uninspected Vessel Regulations)

    Y a. Carbon dioxide
    N b. Steam smothering
    N c. Chemical foam
    N d. All of the above

3202: Which of these approved lifesaving devices must a small passenger vessel carrying passengers for hire carry for each person on board? (small passenger vessel regulations)

    N a. Buoyant cushion
    Y b. Life jacket
    N c. Ring buoy
    N d. Buoyant vest

3213: A safety feature provided on all inflatable liferafts is __________.

    N a. overhead safety straps
    N b. built in seats
    N c. internal releasing hooks
    Y d. water stabilizing pockets

3395: A jack-up 180 feet in length with the LCF at 120 feet AFO has a draft of 8 feet at the bow and 11 feet at the stern. What is the mean draft?

    N a. 8.0 feet
    N b. 9.0 feet
    Y c. 9.5 feet
    N d. 12.0 feet

3398: Before starting any diesel or gasoline engine, which of the following must be checked?

    Y a. Oil level
    N b. Flow of cooling water
    N c. Exhaust discharge
    N d. All of the above

3497: What is the purpose of the hydrostatic release on an inflatable liferaft?

    Y a. To release the raft from the cradle automatically as the ship sinks
    N b. To inflate the raft automatically
    N c. To test the rafts hydrostatically
    N d. None of the above

3605: While anchored in 700 feet of water, 3,150 feet of chain is deployed for line #4. Tension on that line is 200 kips. According to the DEEP DRILLER Operating Manual, how much of that chain lies along the bottom?

    N a. 1,218 feet
    Y b. 1,398 feet
    N c. 1,752 feet
    N d. 1,844 feet

3684: The rescuer can best provide an airtight seal during mouth-to-mouth resuscitation by pinching the victim's nostrils and __________.

    N a. cupping a hand around the patient's mouth
    N b. keeping the head elevated
    Y c. applying his mouth tightly over the victim's mouth
    N d. holding the jaw down firmly

3805: For the DEEP DRILLER, what are the longitudinal moments for a sounding of 15 feet in tank C3P?

    N a. 1,055 foot-tons
    N b. 7,772 foot-tons
    N c. -21,391 foot-tons
    Y d. -25,669 foot-tons

3920: Inflatable liferafts are less maneuverable than lifeboats due to their __________.

    N a. shape
    N b. shallow draft
    N c. large sail area
    Y d. All of the above

4071: The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). What are the new LM (longitudinal moments) if the entire contents of Salt Water Ballast Tanks 1P and 1S are discharged?

    Y a. 5,191 ft-tons
    N b. 13,414 ft-tons
    N c. 31,992 ft-tons
    N d. 69,175 ft-tons

4177: The DEEP DRILLER is loaded as shown in the Sample Load Form #4 (Drilling). What would be the weight of the mud in pit #4 if the sounding level changed to 6 feet and the mud weight decreased from 16 to 14 pounds/gallon?

    Y a. 70.00 long tons
    N b. 84.17 long tons
    N c. 93.34 long tons
    N d. 106.67 long tons

4188: You are the operator of a 295 GRT uninspected towing vessel. Which type of fire extinguishing system is required on your vessel, if its construction was contracted for before August 27, 2003? (Uninspected Vessel Regulations)

    Y a. Type B-V semi-portable OR a fixed fire-extinguishing system
    N b. Type B-IV semi-portable OR a fixed fire-extinguishing system
    N c. Type B-III semi-portable AND a fixed fire-extinguishing system
    N d. Fixed CO2, AND another fixed fire-extinguishing system

4191: The DEEP DRILLER is planning to operate while loaded as shown in the Sample Load Form #3 ( Preparing to Drill). What is the margin between KGT and maximum allowable KG?

    N a. 0.66 foot
    N b. 2.58 feet
    Y c. 5.24 feet
    N d. 7.87 feet

4258: Dacron sails, when not in use, may be damaged if __________.

    Y a. left in the sunlight
    N b. stowed wet
    N c. washed with soap
    N d. folded frequently

4553: What longitudinal moments are created when 379.97 kips of fresh water is placed in the COASTAL DRILLER's #1 drill water tank?

    N a. 1,729 ft-kips
    N b. 1,739 ft-kips
    N c. 1,749 ft-kips
    Y d. 1,759 ft-kips

4723: The COASTAL DRILLER is loaded as shown in the Sample Load Form #1 (Rig Move). What is the new trim angle if 500 kips of weight are shifted aft 60 feet?

    N a. 2.02 degrees by the stern
    N b. 1.51 degrees by the stern
    N c. 0.98 degrees by the stern
    Y d. 0.61 degrees by the stern

5805: A permanent chain chasing system is used to __________.

    N a. clean anchor chain as it's hauled in
    N b. recover anchors which have lost their buoys
    Y c. run and retrieve anchors
    N d. prepare anchor chain for inspection

8221: What is the purpose of a vent header?

    N a. Prevents entry of water into vent systems
    N b. Prevents passage of flame into fuel tanks
    N c. Catches overflow
    Y d. Combines individual vent lines into a main

8281: In storm conditions, when the DEEP DRILLER is in 600 feet water depth, and the high-line tension (HLT) is 350 kips, completely slacking the two leeward mooring line tensions reduces the HLT to __________.

    N a. 375 kips
    Y b. 275 kips
    N c. 245 kips
    N d. 220 kips

8713: Port ballast pump #1 on the DEEP DRILLER has failed. If you want to deballast the forward-port column using port ballast pump #2, it is necessary to open valves __________.

    Y a. 3, 34, 35, 36, 46, and 48
    N b. 4, 34, 35, 36, 46, and 48
    N c. 3, 34, 36, 46, and 48
    N d. 4, 34, 36, 46, and 48

9651: In a fixed CO2 fire extinguishing system where pressure from pilot cylinders is used to release the CO2 from the main bank of cylinders, the number of required pilot cylinders shall be at least __________.

    Y a. 2
    N b. 3
    N c. 4
    N d. 6