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.

7: You have been carrying a liquid with flammable limits of 1% to 7% mixture with air. If your instructions say that no one shall enter the tank if the vapor concentration is over 15% of the LEL, what is the maximum allowable percentage of vapors for men to enter?
209: The number 2 lifeboat on a tanker would be found __________.
301: Which factor has the greatest effect on the value of the free surface correction?
685: The operator of each vessel engaged in a vessel-to-vessel oil transfer operation must keep a signed copy of the declaration of inspection for __________. 

    N a. 10 days
    Y b. 1 month
    N c. 6 months
    N d. 1 year
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
724: Messages concerning weather conditions transmitted by radiotelephone are preceded by __________. 

    N a. MAYDAY
    N b. PAN-PAN
    Y c. SECURITE
    N d. SOS
746: The quantity of fuel required to be carried in a motor lifeboat is __________. 

    Y a. the quantity needed for 24 hours continuous operation
    N b. the quantity needed for 48 hours continuous operation
    N c. 55 gallons
    N d. 90 gallons
755: While your vessel is taking on fuel you notice oil on the water around the vessel. What should you do FIRST? 

    Y a. Stop the fueling.
    N b. Notify the Coast Guard.
    N c. Notify the terminal superintendent.
    N d. Determine the source of the oil.
1147: In addition to a portable hand-operated bilge pump, a 55 foot long ferry must have a fixed power operated bilge pump capable of pumping at least __________. 

    N a. 5 GPM
    N b. 10 GPM
    Y c. 25 GPM
    N d. 50 GPM
1187: A self-contained breathing apparatus is used to __________. 

    N a. make underwater repairs to barges
    N b. determine if the air in a tank is safe for men
    Y c. enter areas that may contain dangerous fumes or lack oxygen
    N d. resuscitate an unconscious person
1192: Which statement is TRUE concerning the oxygen indicator? 

    N a. Exposure to flue gas has no effect on the instrument.
    N b. Only one level of the tested space need be sampled by the instrument.
    Y c. Prolonged exposure to CO2 can result in false readings.
    N d. The instrument can detect hydrogen gas.
1322: How should the lifeboat sea painter be rigged? 

    N a. Spliced into the ring on the stem post
    Y b. Secured to the inboard side of a forward thwart and led inboard of the falls
    N c. Secured by a toggle to the stem post and led outboard of the falls
    N d. Secured by a toggle around the outboard side of a forward thwart
1425: Which advantage does dry chemical have over carbon dioxide (CO2) in firefighting? 

    N a. Compatible with all foam agents
    N b. Cleaner
    Y c. More protective against re-flash
    N d. All of the above
1433: You should NOT use a power tool if __________. 

    N a. it has a three-prong plug
    Y b. the insulation of the power wires is worn
    N c. hand tools can be used instead
    N d. the power source is alternating current
1530: Which vessel in ocean service is not subject to Annex V of MARPOL 73/78? 

    N a. A 20-foot sailing vessel
    N b. A 26-foot tug and tow
    N c. An uninspected 35-foot passenger vessel
    Y d. A Navy Destroyer
1746: An on-board monitoring system, using level sensors permanently installed in each vessel compartment, will have a high level alarm set at not more than __________. 

    N a. 90% of compartment capacity
    Y b. 95% of compartment capacity
    N c. 97% of compartment capacity
    N d. 99% of compartment capacity
1847: An offshore drilling unit must be equipped with a first aid kit approved by the __________. 

    N a. Coast Guard
    N b. American Bureau of Shipping
    N c. Minerals Management Service
    Y d. Mine Safety and Health Administration
1973: To ensure receipt of all relevant MSI, a NAVTEX receiver should be turned on at least how many hours prior to departure from port? 

    N a. 2
    N b. 4
    N c. 6
    Y d. 8
2036: Which system provides maximum communications range? 

    N a. MF SITOR
    Y b. INMARSAT
    N c. Digital Selective Calling on 8414.5KHz
    N d. VHF ARQ
2230: To check stability, a weight of 40 tons is lifted with the jumbo boom, whose head is 40 feet from the ship's centerline. The clinometer shows a list of 6.5° with the weight suspended. Displacement including weight is 16,000 tons. The GM while in this condition is __________. 

    N a. 0.21 foot
    N b. 0.43 foot
    Y c. 0.88 foot
    N d. 1.02 feet
2247: When a rescue vessel approaches a survival craft in heavy seas, the person in charge of the survival craft should __________. 

    N a. tie up to the rescue vessel
    N b. transfer only those personnel who are not seasick
    Y c. wait for calmer weather before transferring personnel
    N d. transfer all personnel immediately
2396: Your vessel's drafts are: FWD 17'-05", AFT 20'-01"; and the KG is 25.6 feet. What is the righting moment when the vessel is inclined to 45°? (Use the reference material in Section 1, the blue pages, of the Stability Data Reference Book) 

    N a. 17,222 foot-tons
    Y b. 19,709 foot-tons
    N c. 21,137 foot-tons
    N d. 22,002 foot-tons
2506: Grade E combustible liquids are those having flash points of __________. 

    N a. 80°F or less
    N b. greater than 80°F and less than 115°F
    N c. greater than 115°F and less than 150°F
    Y d. 150°F or greater
2616: According to the Chemical Data Guide, the flash point for motor gasoline is __________. 

    Y a. -40°F
    N b. 100°C
    N c. 199°C
    N d. 495°F
2907: The number of kips necessary to change the true mean draft of a MODU one inch is known as __________. 

    N a. MT1 inch
    N b. MH1 inch
    Y c. KPI
    N d. KMD
3001: Which statement concerning 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.
3069: Unless otherwise stated, the term "approved" applied to a vessel's equipment, means approved by the __________. (small passenger vessel regulations) 

    N a. American Bureau of Shipping
    N b. Congress of the United States
    Y c. Commandant of the Coast Guard
    N d. Board of Fire Underwriters
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
3208: 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
3245: 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-0115 

    Y a. FWD 25'-02", AFT 29'-10"
    N b. FWD 25'-06", AFT 29'-06"
    N c. FWD 27'-10", AFT 26'-02"
    N d. FWD 29'-11", AFT 25'-04"
3252: Before any machinery is put in operation, you should __________. 

    Y a. ventilate all compartments, see that the machinery is clean and there are no obstructions
    N b. just turn the key and start up
    N c. take for granted that there are no fuel leaks
    N d. assume there are no volatile fumes in the engine space
3291: A semisubmersible with a displacement of 18,117.7 long tons and a KG of 52.0 feet discharges 200 long tons from a KG of 130 feet. To remain at draft, ballast is added at a height of 10 feet. What is the change in KG? 

    Y a. 1.32 feet downward
    N b. 1.32 feet upward
    N c. 0.87 foot downward
    N d. 0.87 foot upward
3375: The DEEP DRILLER at a draft of 58.0 feet discharges 1,792.44 long tons of ballast. What is the new draft? 

    N a. 40 feet
    Y b. 45 feet
    N c. 50 feet
    N d. 55 feet
3545: Until a change to lightweight has been approved, the weights and center of gravity locations for the changes to lightweight shown in the permanent record for the Deep Driller are treated as __________. 

    Y a. variable load
    N b. fixed load
    N c. basic load
    N d. gross tonnage
3592: When should the emergency position-indicating radio beacon be activated after abandoning an OSV? 

    Y a. Immediately
    N b. After one hour
    N c. Only when another vessel is in sight
    N d. Only after sunset
3727: The DEEP DRILLER is engaged in wire line logging. You have 10,000 feet of drill pipe and bottom hole assembly in the set back. Marine weather forecasts are predicting weather with winds in excess of 70 knots. Your first step to prepare for the storm should be to __________. 

    Y a. suspend wire line operations and run the drill string into  the hole
    N b. continue wire line operations and bring the rig to a 45 foot draft
    N c. suspend wire line operations and dump your mud pits overboard
    N d. increase tension on all anchor chains to minimize movement  of the rig
3961: The DEEP DRILLER is loaded as shown is Sample Load Form #4 (Drilling). What would be the change in vertical moments for Fresh Water if the entire contents of Drill Water Tank 5P are transferred to Drill Water Tank 5S? 

    N a. 5,683 ft-tons
    Y b. 2,689 ft-tons
    N c. 306 ft-tons
    N d. 000 ft-tons
3994: The color of the signal flare sent up by a submarine about to surface due to an emergency condition within the submarine is __________. 

    N a. green
    Y b. red
    N c. white
    N d. yellow
4001: The DEEP DRILLER is loaded as shown in Sample Load Form #4 (Drilling). What would be the new sum of longitudinal moments for Fuel Oil (Table 2) if the entire contents of Tank 4P are transferred to Tank 4S? 

    N a. 000 foot-tons
    N b. 3,992 foot-tons
    Y c. 7,984 foot-tons
    N d. 15,968 foot-tons
4117: As Master of an inspected small passenger vessel, you have a question regarding a proposed modification to a watertight bulkhead. In which subchapter of title 46 of the Code of Federal Regulations would you find the answer? 

    Y a. Subchapter T
    N b. Subchapter Q
    N c. Subchapter F
    N d. Subchapter C
4168: The color of the signal flares sent up by a submarine surfacing from periscope depth is __________. 

    N a. green
    Y b. white
    N c. yellow
    N d. red
4255: What is the maximum permitted hook load for the COASTAL DRILLER when 450 kips are in the setback and no other loads are on the cantilever? 

    N a. 450 kips
    Y b. 529 kips
    N c. 550 kips
    N d. 750 kips
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.
4748: The SS AMERICAN MARINER has on board 3885 tons of cargo with an LCG-FP of 278.45 feet. See the distribution of the cargo to be loaded. Use the white pages of The Stability Data Reference Book to determine the final LCG-FP of the cargo. ST-0168 

    N a. LCG-FP 267.7 feet
    Y b. LCG-FP 268.4 feet
    N c. LCG-FP 269.2 feet
    N d. LCG-FP 270.6 feet
5286: A vessel is inclined at an angle of loll. In the absence of external forces, the righting arm (GZ) is __________. 

    N a. positive
    N b. negative
    Y c. zero
    N d. vertical
5506: The SS AMERICAN MARINER has drafts of: FWD 13'-05", AFT 21'-03". Use the white pages of the Stability Data Reference Book to determine the drafts if you ballast the forepeak with 88 tons of seawater. 

    N a. FWD 14'-01.8", AFT 20'-09.3"
    Y b. FWD 14'-02.4", AFT 20'-08.7"
    N c. FWD 14'-03.0", AFT 20'-08.1"
    N d. FWD 14'-03.6", AFT 20'-07.5"
5751: When piggybacking anchors, the distance between the primary anchor and the secondary anchor is determined by __________. 

    N a. bottom conditions
    N b. anchor types
    Y c. water depth
    N d. workboat winch capacity
5924: The SS AMERICAN MARINER is ready to bunker with drafts of FWD 13'-10", AFT 16'-04". After all bunkers are on board, soundings indicate the tonnages shown. Use the white pages of The Stability Data Reference Book to determine the free surface correction. ST-0187 

    N a. 1.30 feet
    N b. 1.07 foot
    N c. 0.96 foot
    Y d. 0.73 foot
6187: A fire in a ballast pumproom can be brought under control with minimal impact on stability by __________. 

    N a. cooling the outside bulkheads with water
    Y b. shutting all sources of air into the compartment
    N c. closing the sea chest
    N d. flooding the compartment with salt water
6545: Flammable liquids should have what kind of label? 

    N a. Skull and crossbones
    N b. Yellow
    Y c. Red
    N d. White
6615: Where are self-closing doors required on a MODU? 

    N a. In the galley
    Y b. In each stair tower
    N c. To each sleeping room
    N d. To the engine room
6637: Of the required ring life buoys for a MODU, how many must be equipped with a water light? 

    N a. 1
    N b. 2
    Y c. 4
    N d. 8
7051: When a patient is suspected of having appendicitis, the primary action is to __________. 

    N a. give the patient a laxative to relieve pain
    N b. give the patient morphine sulfate to relieve pain
    Y c. confine to bed until helicopter arrives
    N d. give the patient aspirin with a glass of water
7331: Routine radio communications should be no more than __________. 

    N a. one minute
    Y b. three minutes
    N c. five minutes
    N d. eight minutes
7355: When do you use your FCC call sign when transmitting on channel 16? 

    N a. Only at the beginning of a transmission
    N b. Only in an emergency
    N c. Only if asked by the U.S. Coast Guard
    Y d. Always at the beginning and ending of a transmission
7388: All marine low-speed diesels are of what design? 

    N a. Four-stroke
    Y b. Two-stroke
    N c. Electronic ignition
    N d. Forced exhaust
8093: What is the displacement of the DEEP DRILLER with a draft of 19.5 feet in fresh water? 

    Y a. 11,932.8 long tons
    N b. 12,232.8 long tons
    N c. 12,602.9 long tons
    N d. 18,919.8 long tons
8793: While drilling loaded as shown in Sample Load Form #4 (Drilling), the DEEP DRILLER suffers a sudden unexpected inclination to port and aft. Strong winds and high waves are from the starboard bow. Among the possible causes, you should consider __________. 

    N a. failure of mooring lines 1 or 2
    Y b. failure of mooring lines 3 or 4
    N c. leak in ballast tank #9P
    N d. ballast tanks equalizing into tank 10P
9317: Which statement is CORRECT with respect to inserting an airway tube? 

    Y a. Only a trained person should attempt to insert an airway tube.
    N b. A size 2 airway tube is the correct size for an adult.
    N c. The airway tube will not damage the victim's throat.
    N d. Inserting the airway tube will prevent vomiting.
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