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?
38: When applying chest compressions on an adult victim during CPR, the sternum should be depressed about __________.
112: Your small vessel is broken down and rolling in heavy seas. You can reduce the possibility of capsizing by __________.
133: You have abandoned ship and are in charge of a liferaft. How much water per day should you permit each occupant to drink after the first 24 hours? 

    N a. 1 can
    Y b. 1 pint
    N c. 1 quart
    N d. 1 gallon
191: Where will you find the requirements for the lights that must be displayed on a mobile offshore drilling unit that is being towed? 

    N a. Notice to Mariners
    Y b. COLREGS
    N c. Coast Pilot
    N d. Light List
259: What does NOT affect the value of the free surface correction? 

    N a. Width of the tank
    N b. Length of the tank
    Y c. Registered tonnage
    N d. Specific gravity of the liquid in the tank
287: The Master shall insure that the Emergency Position Indicating Radio beacon (EPIRB) is __________. 

    N a. secured inside the wheelhouse
    N b. tested annually
    Y c. tested monthly
    N d. secured in the emergency locker
354: The distress message of a ship should include considerable information which might facilitate the rescue. This information should __________. 

    N a. ALWAYS be included in the initial distress message
    N b. be sent to a Coast Guard station FIRST
    Y c. be transmitted as a series of short messages, if time allows
    N d. include the vessel's draft
527: The VHF radiotelephone frequency designated to be used only to transmit or receive information pertaining to the safe navigation of a vessel is __________. 

    N a. 156.8 MHz (channel 16)
    N b. 156.7 MHz (channel 14)
    Y c. 156.65 MHz (channel 13)
    N d. 156.6 MHz (channel 12)
584: The SS AMERICAN MARINER arrived in port with drafts of: FWD28'-08", AFT 29'-05". Cargo was loaded and discharged as indicated. Use sheet 2 in the white pages of the Stability Data Reference Book to determine the final drafts. ST-0013 

    N a. FWD 28'-09", AFT 29'-00"
    N b. FWD 28'-07", AFT 29'-01"
    N c. FWD 28'-05", AFT 29'-08"
    Y d. FWD 28'-04", AFT 29'-05"
630: Reserve buoyancy is __________. 

    N a. also called GM
    N b. the void portion of the ship below the waterline which is enclosed and watertight
    N c. affected by the number of transverse watertight bulkheads
    Y d. the watertight portion of a vessel above the waterline
742: An advantage of an ABC dry chemical over a carbon dioxide extinguisher is __________. 

    N a. lack of toxicity
    Y b. the multipurpose extinguishing ability
    N c. burn-back protection
    N d. cooling ability
756: A motor lifeboat shall carry sufficient fuel to operate continuously for a period of __________. 

    N a. 12 hours
    N b. 18 hours
    Y c. 24 hours
    N d. 36 hours
982: In continuous operation, the effective range of the 15 pound CO2 extinguisher is limited to __________. 

    N a. 2 to 4 feet
    Y b. 3 to 8 feet
    N c. 9 to 12 feet
    N d. 10 to 15 feet
1062: Weight is considered during the periodic required inspection and servicing of __________. 

    Y a. CO2 (carbon dioxide) fire extinguishers
    N b. foam fire extinguishers
    N c. water (stored pressure) fire extinguishers
    N d. All of the above
1355: As a vessel sinks to a depth of 15 feet, the hydrostatic trip releases the liferaft container from its cradle by __________. 

    N a. breaking the weak link
    Y b. releasing the tie-down strap
    N c. pulling the operating cord
    N d. releasing the CO2 canister
1387: In painting a lifeboat following its overhaul, which parts must be painted bright red? 

    N a. the top 2-1/2 inches of each side
    Y b. the releasing gear lever
    N c. the fuel tanks
    N d. the thwarts
1552: INTERNATIONAL AND INLAND A sailing vessel must keep course and speed when __________. 

    Y a. being overtaken
    N b. to windward of another sailing vessel
    N c. to leeward of another sailing vessel
    N d. crossing a vessel engaged in fishing
1555: Seawater may be used for drinking __________. 

    N a. at a maximum rate of two ounces per day
    N b. after mixing with an equal quantity of fresh water
    N c. if gathered during or immediately after a hard rain
    Y d. under no conditions
1573: The searchlight on a survival craft must be capable of operating 3 hours continuously or 6 hours intermittently if operated in cycles of __________. 

    N a. 5 minutes on and 10 minutes off
    N b. 10 minutes on and 5 minutes off
    Y c. 15 minutes on and 5 minutes off
    N d. 15 minutes on and 10 minutes off
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.
1578: You may not act as person-in-charge of oil transfer operations on more than one vessel at a time __________. 

    N a. under any circumstances
    Y b. unless authorized by the Captain of the Port
    N c. unless radio communication is set up between the vessels
    N d. unless the vessels are moored clear of all docks
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
1965: Which statement concerning exposure to microwave signal radiation is TRUE? 

    N a. There is minimal hazard potential as long as the Operator notifies other system users aboard the vessel that the potential exists.
    Y b. The INMARSAT-B ray dome normally prevents nearby persons from being able to determine the direction of the internal antenna.
    N c. There is equally significant hazard potential from all INMARSAT antenna systems.
    N d. FCC type acceptance regulations require that radiated power be kept to a minimum so as to prevent hazard potential.
2088: If the OCMI has NOT granted an extension, free-fall lifeboats must be lowered into the water and launched with the assigned crew at least once every __________. 

    N a. 3 months
    Y b. 6 months
    N c. year
    N d. 2 years
2090: You have 520 tons of below deck tonnage including liquid mud. Your existing deck cargo is 160 tons with a VCG above the deck of 2.7 feet. What is the maximum cargo tonnage you are permitted to load? (See the stability letter for the M.V. Hudson illustration D036DG.) (D036DG )

    Y a. 84 tons
    N b. 160 tons
    N c. 244 tons
    N d. 317 tons
2164: Your vessel is damaged, listing to port and on occasion flopping to the same angle to starboard. It has a long, slow, sluggish roll around the angle of list. There is excessive trim by the stern with little freeboard aft. What action should you take FIRST to correct this situation? 

    N a. Jettison any off-center topside weights to lower GM and correct the list.
    N b. Pump out any slack after double-bottom tanks to reduce free surface and increase freeboard aft.
    N c. Pump out the after peak and fill the forepeak to change the trim.
    Y d. Press up any slack double-bottom tanks forward of the tipping center, then fill the forepeak if empty.
2225: Which system is least likely to be affected by atmospheric disturbances? 

    N a. NAVTEX
    Y b. INMARSAT
    N c. MF NBDP
    N d. HF NBDP
2333: You are sailing into a harbor with the intention of picking up your mooring. There is no current. Which statement(s) is(are) TRUE? 

    Y a. On a ketch, you will most likely strike the jib before making your final approach.
    N b. On a yawl, the last sail you will strike after you have picked up the mooring will normally be the mainsail.
    N c. On a sloop, if your initial approach is to be downwind you could slow your approach by striking the jib and letting your main sheet out as far as it will go.
    N d. All of the above are correct.
2346: Grade E liquids are those having a flash point of __________. 

    N a. 150°F and below
    N b. below 150° and above 80°F
    N c. below 80°F
    Y d. 150°F and above
2426: Your vessel's drafts are: FWD 17'-05", AFT 20'-01"; and the KG is 22.4 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) 

    Y a. 10,656 foot-tons
    N b. 12,340 foot-tons
    N c. 13,980 foot-tons
    N d. 17,520 foot-tons
2840: If a vessel loads 400 tons of deck cargo resulting in a GM of -0.2 feet on 9000 tons of displacement, what will be the angle of loll? (Use the information in Section 1, the blue pages, of the Stability Data Reference Book) 

    N a. 16°
    N b. 15°
    N c. 12°
    Y d. 9°
2844: Your vessel's drafts are: FWD 27'-06", AFT 28'-02"; and the KG is 23.1 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the righting arm at 37° inclination if the center of gravity is 1.8 feet off center. 

    Y a. 0.4 foot
    N b. 1.4 feet
    N c. 1.8 feet
    N d. 2.6 feet
2985: For a MODU with list, a decrease in GMT will cause the angle of inclination to __________. 

    N a. stabilize at an angle of loll
    N b. decrease
    Y c. increase
    N d. remain constant
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
3105: Subtracting the height of the center of gravity corrected for transverse free surface effects from the height of the transverse metacenter of a MODU yields __________. 

    N a. GM
    Y b. GMT
    N c. KGT
    N d. KMT
3164: When discharging cargo from a tank barge, in which case may the cargo pass through or over the towing vessel? 

    N a. With permission from the person in charge of the towing vessel
    N b. With permission from the person in charge of the shore facility
    N c. When off-loading grade C cargo
    Y d. In no case
3177: 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-0112 

    N a. FWD 25'-07", AFT 27'-01"
    N b. FWD 25'-02", AFT 27'-06"
    Y c. FWD 24'-10", AFT 27'-10"
    N d. FWD 24'-08", AFT 28'-00"
3210: On a small passenger vessel, 58 feet in length, carrying 52 passengers the fire pump shall have a minimum pumping capacity of __________. 

    N a. 10 gallons per minute
    N b. 25 gallons per minute
    Y c. 50 gallons per minute
    N d. 100 gallons per minute
3411: The SS AMERICAN MARINER has the liquid loading shown. Use the white pages of The Stability Data Reference Book to determine the KG of the liquid load. ST-0127 

    Y a. 7.9 feet
    N b. 7.3 feet
    N c. 6.4 feet
    N d. 4.3 feet
3603: While anchored in 600 feet water depth, 3,150 feet of chain is deployed for line #8. Tension on that line is 220 kips. According to the DEEP DRILLER Operating manual, how much of that chain lies along the bottom? 

    N a. 994 feet
    Y b. 1,422 feet
    N c. 1,728 feet
    N d. 2,550 feet
3614: While proceeding towards a distress site you hear the message "Seelonce Feenee" over the radiotelephone. Which action should you take? 

    N a. Resume base course and speed because the distress situation is over.
    N b. Do not transmit over the radiotelephone.
    N c. Relay the initial distress message to the nearest shore station.
    Y d. Resume normal communications on the guarded frequency.
3650: If your passenger vessel is fitted with a loudspeaker system, it must be tested at least once __________. 

    Y a. every week
    N b. a day
    N c. every trip
    N d. a watch or once a trip, whichever is shorter
3706: You are in charge of a fishing vessel with 18 individuals on board. You are required to conduct drills and give safety instruction at least once __________. 

    N a. every week
    N b. every 15 days
    Y c. every month
    N d. before you begin fishing
3800: If you have to jump in the water when abandoning ship, your legs should be __________. 

    N a. spread apart as far as possible
    N b. held as tightly against your chest as possible
    N c. in a kneeling position
    Y d. extended straight down and crossed at the ankles
3827: What is the change in transverse moments for the DEEP DRILLER if 103.48 long-tons of ballast is transferred from a full ballast tank 1P to an empty ballast tank 10S? 

    N a. 15,522 foot-tons increase
    Y b. 15,181 foot-tons increase
    N c. 3,594 foot-tons increase
    N d. 1,797 foot-tons increase
4013: The DEEP DRILLER, at 60.0 feet draft in sea water, has VM = 974,441 foot-long tons, LM = 40,301 foot-long tons, TM = 3 foot-long tons, FSML = 30,572 foot-long tons, and FSMT = 18,732 foot-long tons. What is the KG corrected for longitudinal free surface effects? 

    N a. 53.78 feet
    N b. 54.82 feet
    Y c. 55.47 feet
    N d. 56.01 feet
4066: The most important concern in treating a person with extensive burns is __________. 

    N a. reducing disfigurement
    Y b. preventing infection
    N c. cooling with ice water
    N d. reducing swelling
4778: The SS AMERICAN MARINER has on board 5540 tons of cargo with an LCG-FP of 272.20 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-0169 

    N a. LCG-FP 266.5 feet
    Y b. LCG-FP 267.8 feet
    N c. LCG-FP 268.4 feet
    N d. LCG-FP 269.2 feet
4814: You are scheduled to load 3900 tons of cargo, 45 tons of crew effects and stores and 359 tons of fuel. Use the blue pages of the Stability Data Reference Book to determine the vessel's mean draft in fresh water. 

    N a. 19'-00"
    N b. 18'-07"
    N c. 18'-04"
    Y d. 18'-01"
5057: A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started? 

    N a. When the towing vessel enters the fog
    N b. When the drilling rig enters the fog
    N c. When the towing vessel can no longer be seen from the rig
    Y d. Immediately
5283: The DEEP DRILLER suffers minor flooding of the starboard pump room while in transit. If both starboard bilge pumps fail to dewater the pump room, you may use __________. 

    Y a. starboard drill water pump
    N b. starboard saltwater service pump
    N c. starboard ballast pumps
    N d. port ballast pumps and crossover system
5531: With adaptor blocks/chocks removed from an LWT stock anchor, the trip angle will be __________. 

    N a. 20°
    N b. 30°
    N c. 40°
    Y d. 50°
5567: What is the most important difference between the bow type anchor shackle and the D-type anchor shackle? 

    N a. The bow type shackle provides a superior connection.
    N b. The D-type shackle is weaker than the bow type.
    Y c. The bow type shackle is weaker than the D-type.
    N d. The D-type shackle provides an inferior connection.
5587: What is the primary disadvantage of a permanent chain chaser system? 

    N a. It requires anchor handling boats with more horsepower.
    N b. Chain chasers work in shallow water only.
    Y c. Chain chasers will not work with piggyback anchors.
    N d. It takes longer to deploy anchors using chain chasers.
5933: Each fire hydrant must have at least one spanner and at least one __________. 

    Y a. hose rack or reel
    N b. all purpose nozzle
    N c. foam applicator
    N d. pick axe
6845: After conducting a boat drill on a mobile offshore drilling unit, what must the Master or person in charge enter in the in the logbook? 

    Y a. Any inoperative equipment and the corrective action taken
    N b. The name of the lifeboatman in charge of each lifeboat
    N c. The location of the vessel at the time of the drill
    N d. The time it took to lower the boat
6901: In the event of a casualty to a MODU, who is responsible to make records available to the Coast Guard official authorized to investigate the casualty? 

    N a. Officer in Charge, Marine Inspection
    N b. The person who caused the casualty
    N c. The company man
    Y d. The owner
8287: Automatic mechanical ventilation shutdown is required for CO2 systems protecting the __________. 

    Y a. machinery spaces
    N b. cargo compartments
    N c. living quarters
    N d. galley
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