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.


318: The best treatment for preventing traumatic shock after an accident is to __________.


464: You are making a telephone call ship-to-shore using the VHF-FM service. You can tell that the working channel is busy if you hear __________.


485: Cargo hose carried on tank vessels must be designed to withstand the pressure of the shutoff head of the cargo pump or pump relief valve setting, but in no case should it be less than __________.


492: The spray of water produced by using the high-velocity fog position on an all-purpose nozzle will have __________.

    Y a. greater range than low-velocity fog
    N b. lesser range than low-velocity fog
    N c. about the same range as low-velocity fog
    N d. greater range than a solid stream

603: The painter which is to be attached to the thwart of a lifeboat should __________.

    N a. be fitted at the end with an approved safety shackle
    N b. have a long eye splice at the end, and a shackle and pin should be attached to the painter with a lanyard
    Y c. have a long eye splice at the end, and a hardwood toggle should be attached to the thwart with a lanyard
    N d. be fitted with a swivel and quick-releasing pelican hook

736: How many liters of water per person must be carried in lifeboats on a tankship sailing a coastwise route?

    N a. None
    N b. One
    N c. Two
    Y d. Three

811: Your vessel is broken down and rolling in heavy seas. You can reduce the possibility of capsizing by __________.

    N a. constantly shifting the rudder
    Y b. rigging a sea anchor
    N c. moving all personnel aft
    N d. moving all personnel forward and low

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

881: You should FIRST treat a simple fracture by __________.

    N a. attempting to set the fracture
    Y b. preventing further movement of the bone
    N c. applying a tourniquet
    N d. alternately applying hot and cold compresses

1099: On small passenger vessels, shut-off valves must be installed on both gasoline and diesel fuel supply lines __________.

    Y a. at the tank and the engine end of the fuel line
    N b. outside the engineroom on the fill and vent lines
    N c. only at the tank end of the fuel line
    N d. only at the engine end of the fuel line

1103: A vessel is "listed" when it is __________.

    Y a. inclined due to an off-center weight
    N b. inclined due to the wind
    N c. down by the head
    N d. down by the stern

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

1264: The operating cord on an inflatable liferaft should be renewed by __________.

    N a. removing the top half of the shell, cutting the line at its source, and renewing completely
    N b. cutting the line where it enters the case and replacing that portion
    N c. leaving the original line and tying another one to it so the two lines will take the strain
    Y d. an approved servicing facility ashore

1812: The sails are properly set and trimmed. As a vessel heads up from a beam reach to close hauled the __________.

    Y a. apparent wind moves forward
    N b. heeling moment decreases
    N c. side slip decreases
    N d. speed increases

1826: Your vessel displaces 747 tons and measures 136'L by 34'B. You ship a large wave on the after deck. What is the reduction to GM due to free surface before the water drains overboard, if the after deck measures 56'L x 34'B and the weight of the water is 58.6 tons?

    N a. 6.04 feet
    N b. 6.23 feet
    Y c. 6.51 feet
    N d. 6.76 feet

1872: Your vessel displaces 641 tons. The existing deck cargo has a center of gravity of 3.6 feet above the deck and weighs 36 tons. If you load 22 tons of ground tackle with an estimated center of gravity of 2.0 feet above the deck, what is the final height of the CG of the deck cargo?

    N a. 2.33 feet
    N b. 2.55 feet
    N c. 2.77 feet
    Y d. 2.99 feet

2062: You are running before the wind in a fresh breeze. The boom may be prevented from accidentally jibing by using a(n) __________.

    N a. buntline
    N b. clewline
    N c. outhaul
    Y d. preventer

2197: A self-righting survival craft will return to an upright position provided that all personnel __________.

    Y a. are seated with seat belts on and doors shut
    N b. are seated with seat belts on and doors open
    N c. are to shift to one side to right it
    N d. escape from the craft

2246: What would be classified as grade "C" petroleum product?

    N a. Reid vapor pressure of 14 psia, flash point of 60°F.
    N b. Reid vapor pressure of 7 psia, flash point of 85°F.
    Y c. Reid vapor pressure of 5 psia, flash point of 70°F.
    N d. Reid vapor pressure above 8 1/2 psia but less than 14 psia.

2251: What will NOT decrease the stability of a vessel?

    N a. Topside icing
    N b. Running with a following sea
    N c. Using 35% of the fuel in a full tank
    Y d. Lowering a weight suspended by a boom onto the deck

2309: Your vessel is preparing to lift a weight of 30 tons with a boom whose head is 30 feet from the ship's centerline. The ship's displacement not including the weight lifted is 8,790 tons. KM is 21.5 ft; KG is 20.5 ft. The angle of list when the weight is lifted will be __________.

    N a. 1.4°
    N b. 2.8°
    N c. 3.4°
    Y d. 5.8°

2347: Which references should the GMDSS radio operator consult for information on the proper operation of the equipment?

    N a. ITU list of Equipment Operations
    Y b. The manufacturer's operating manuals
    N c. 47 CFR Part 80
    N d. Information available through SafetyNET channels

2383: What is the minimum license requirement of a GMDSS Radio Operator?

    N a. Holding the Marine Radio Operator Permit is a pre-requisite before the GMDSS Radio Operator Endorsement can be obtained.
    N b. Holding the General Radiotelephone Operator License with RADAR endorsement is sufficient.
    Y c. Holding a valid GMDSS Radio Operator License is sufficient.
    N d. Holding either the General Radiotelephone Operator License or the First or Second Class Radiotelegraph License with GMDSS Radio Maintainer's Endorsement is sufficient.

2456: According to the Chemical Data Guide, epichlorohydrin is a(n) __________.

    N a. corrosive
    Y b. class B poison
    N c. oxidizer
    N d. explosive

2462: If a leak occurred while loading diethylenetriamine, the chemical data guide indicates you would smell an odor similar to __________.

    Y a. ammonia
    N b. rotten eggs
    N c. gasoline
    N d. None of the above

2470: According to the Chemical Data Guide, propylene oxide is assigned a health hazard rating of 3,2,2. The last digit "2" of the rating means __________.

    N a. chemical vapors will cause a slight smarting of the eyes or respiratory system if present in high concentrations
    N b. the chemical contains fairly severe skin irritants, causing second- and third-degree burns after a few minutes contact
    Y c. the chemical poison presents some hazard if it enters the body and typically has threshold limits of 100 to 500 ppm
    N d. the chemical is severely hazardous, usually having threshold limits below 10 ppm

2514: Your vessel's drafts are: FWD 14'-11", AFT 16'-01"; and the KG is 23.2 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. 5,800 foot-tons
    N b. 7,600 foot-tons
    Y c. 9,272 foot-tons
    N d. 11,200 foot-tons

2613: What is required in addition to the heat, fuel, and oxygen of the fire triangle to have a fire?

    N a. Smoke
    N b. Electricity
    Y c. Chain reaction
    N d. Pressure

2626: Which message categories cannot be disabled by the GMDSS Radio Operator?

    N a. Navigational warnings
    N b. Meteorological warnings
    N c. Search and Rescue information
    Y d. All of the above

2642: When properly set and drawing, a fore-and-aft sail has a cross-section that __________.

    N a. is a uniform curve
    Y b. is a curve with more curve at the luff
    N c. is a curve with more curve at the leach
    N d. approximates a straight line

2714: Use the floodable length curve in Section 1, the blue pages, of the Stability Data Reference Book. If the curve represents 45 percent permeability and number 1 hold floods, the vessel will sink if the permeability exceeds what percent?

    N a. 63
    N b. 66
    Y c. 71
    N d. 77

2794: Which would influence a magnetic compass?

    N a. Electrical wiring
    N b. Iron pipe
    N c. Radio
    Y d. All of the above

2905: Each emergency light must be marked with __________.

    Y a. the letter "E"
    N b. an arrow pointing to the nearest exit
    N c. a no-smoking symbol
    N d. the word "DANGER"

2972: Regulations require that approved buoyant work vests __________. (small passenger vessel regulations)

    N a. may not be carried on inspected vessels
    N b. may be substituted for 10% of the required life jackets
    N c. shall be stowed in a place inaccessible to passengers
    Y d. shall be stowed separately from the required life jackets

3007: A floating MODU with an initial negative metacentric height __________.

    N a. will capsize
    N b. will incline further
    Y c. may lie at an angle of loll
    N d. may be initially level

3116: According the Lifesaving regulations in Subchapter W, fire and abandon ship drills must be held within 24 hours of leaving port if the percentage of the crew that has not participated in drills aboard that particular vessel in the prior month exceeds __________.

    N a. 5%
    N b. 10%
    Y c. 25%
    N d. 40%

3162: All life jackets and life buoys shall be marked with the vessel's name in letters at least __________. (small passenger vessel regulations)

    N a. 1/2 inch high
    N b. 1 inch high
    Y c. Height not specified
    N d. 1-1/2 inches high

3171: Automatic fire dampers in ventilation systems are operated by use of __________.

    Y a. fusible links
    N b. remotely operated valves
    N c. C02 system pressure switches
    N d. heat or smoke detectors

3194: Generally, what is used to inflate liferafts?

    Y a. non-toxic gas
    N b. Oxygen
    N c. Hydrogen
    N d. Helium

3241: The DEEP DRILLER, at a draft of 45 feet and total vertical moments of 981,567 ft-long tons, floods 2068.7 long tons of sea water through the overboard discharge into tanks 3 and 8 on both sides. The VCG of the added ballast is 7.22 feet. The shift in the height of the center of gravity is __________.

    N a. 0.93 foot
    Y b. 6.16 feet
    N c. 6.95 feet
    N d. 7.88 feet

3306: 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-0120

    N a. FWD 26'-09", AFT 28'-05"
    Y b. FWD 26'-05", AFT 28'-07"
    N c. FWD 26'-04", AFT 28'-10"
    N d. FWD 26'-00", AFT 29'-00"

3348: Generally speaking, the fuel injected into a marine diesel engine combustion chamber is ignited by __________.

    N a. spark plugs
    N b. glow plugs
    Y c. heat of compression
    N d. a magneto

3390: Non-required lifesaving equipment carried as additional equipment aboard small passenger vessels __________.

    N a. must be removed when carrying passengers
    Y b. must be approved by the Commandant
    N c. may be substituted for not more than 5% of the required lifejackets
    N d. may be carried regardless of approval or condition, if in excess of required lifesaving equipment

3534: When a passenger vessel's plans must be permanently exhibited, they are NOT required to show information on the __________.

    N a. fire detection system
    N b. portable fire extinguishers
    Y c. lifeboats, liferafts, and life preservers
    N d. ventilation systems

3746: 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

3772: The abandon ship signal sounded by the vessel's whistle is __________.

    N a. 6 short blasts and 1 long blast
    N b. more than 6 short blasts
    Y c. more than 6 short blasts and 1 long blast
    N d. 1 long blast of at least 10 seconds

3911: For the DEEP DRILLER, it is recommended that the number of lower-hull ballast tanks with free surfaces be less than __________.

    N a. 2
    N b. 4
    Y c. 6
    N d. 8

3914: If you must jump from a vessel, the correct posture includes __________.

    Y a. holding down the life preserver against the chest with one arm crossing the other, covering the mouth and nose with a hand, and feet together
    N b. knees bent and held close to the body with both arms around legs
    N c. body straight and arms held tightly at the sides for feet first entry into the water
    N d. both hands holding the life preserver below the chin with knees bent and legs crossed

4141: How much additional solid weight could be loaded at a VCG of 189.7 feet on the DEEP DRILLER while loaded as shown in the Sample Load Form #4 (Drilling)? Assume ballast added or discharged to maintain draft is done so at 15 feet above the baseline.

    N a. 279.2 long tons
    Y b. 314.2 long tons
    N c. 404.2 long tons
    N d. 461.9 long tons

4154: Coast Guard Regulations require that prior to departure on a three-day voyage, the steering gear, whistle, and communications system between the bridge and engine room must be tested prior to departure no earlier than __________.

    N a. 1 hour
    N b. 4 hours
    N c. 8 hours
    Y d. 12 hours

4265: The rotary of the COASTAL DRILLER is located 36 feet aft of the transom and 6 feet to starboard of the centerline. The hook load is 300 kips. Considering the changes to lightweight shown in the Operating Manual, the maximum amount of setback is __________.

    N a. 545 kips
    N b. 450 kips
    N c. 245 kips
    Y d. 224 kips

4574: The SS AMERICAN MARINER has on board 4824 tons of cargo with an LCG-FP of 277.45 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-0164

    N a. LCG-FP 267.7 feet
    N b. LCG-FP 268.4 feet
    Y c. LCG-FP 269.2 feet
    N d. LCG-FP 270.6 feet

4658: You are scheduled to load 3900 tons of cargo, 45 tons of crew effects and stores and 259 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. 18'-06"
    N b. 18'-02"
    Y c. 17'-11"
    N d. 17'-08"

5457: The only wire rope termination which may be made in the field is __________.

    N a. swaged socket
    N b. thimbled mechanical splice
    N c. hand splice
    Y d. spelter poured and resin sockets

5713: What pressure must a spring buoy, moored at a 500 foot depth, withstand?

    N a. 100 psig
    N b. 150 psig
    Y c. 225 psig
    N d. 300 psig

6426: Your drafts are: FWD 21'-03", AFT 26'-00". Use the blue pages of the Stability Data Reference Book to determine the location of the center of flotation relative to amidships.

    Y a. 2.8 feet forward
    N b. 2.1 feet forward
    N c. 1.6 feet forward
    N d. 1.9 feet aft

7037: Epilepsy is a chronic nervous disorder characterized by __________.

    N a. severe nausea and cramps
    Y b. muscular convulsions with partial or complete loss of consciousness
    N c. sudden thirst and craving for candy
    N d. severe agitation and desire to get out of closed spaces

8891: Which type of respiratory protection is preferable for repair/investigation personnel on a MODU in a hydrogen sulfide (H2S) environment?

    N a. U.S. Navy Oxygen Breathing Apparatus (OBA)
    N b. Emergency Escape Breathing Apparatus (EEBA)
    N c. Demand Self-Contained Breathing Apparatus (SCBA)
    Y d. Pressure-Demand Self-Contained Breathing Apparatus (SCBA)

9067: The TCG of a vessel may be found by dividing the displacement of the vessel into the __________.

    N a. transverse center of gravity of the vessel
    N b. sum of the vertical moments of the vessel
    Y c. sum of the transverse moments of the vessel
    N d. transverse baseline of the vessel

9533: Unstable equilibrium exists at small angles of inclination when __________.

    Y a. G is above M
    N b. G is off the centerline
    N c. B is off the centerline
    N d. B is above G