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.


66: The galley on your cargo vessel has an area of 2,900 square feet. What will fulfill the requirements for fire protection?


160: A vessel is tender if cargo weight is __________.


228: Which is the most serious type of fracture?


276: For a cargo vessel of 1,000 GT or over, on an international voyage, the required minimum pitot tube pressure from the two highest outlets when two fire pumps are operating simultaneously is approximately __________.

    N a. 35 psi
    Y b. 50 psi
    N c. 70 psi
    N d. 100 psi

301: Which factor has the greatest effect on the value of the free surface correction?

    Y a. The width of the tank
    N b. The length of the tank
    N c. The draft of the vessel
    N d. The specific gravity of the liquid in the tank

389: On a vessel of 9,000 tons displacement, compute the reduction in metacentric height due to free surface in a hold having free water on the tank tops. The hold is 20 feet long and 30 feet wide. The reduction in metacentric height is __________.

    N a. .09 feet
    N b. .12 feet
    Y c. .14 feet
    N d. .16 feet

402: To lubricate the swivel or remove corrosion from a fire hose coupling, you should use __________.

    N a. glycerine
    N b. graphite
    N c. kerosene
    Y d. fresh water and soap

692: Why should foam be banked off a bulkhead when extinguishing an oil fire?

    N a. To coat the surrounding bulkheads with foam in case the fire spreads
    N b. To cool the bulkhead closest to the fire
    N c. To prevent any oil on the bulkheads from igniting
    Y d. To prevent agitation of the oil and spreading the fire

1085: When lowering lifeboats in heavy seas, a good practice is to rig frapping lines __________.

    N a. on only the forward falls
    N b. on only the after falls
    Y c. with a lead of about 45 degrees to the boat
    N d. from the falls to the main deck of the vessel

1330: How should the lifeboat sea painter be rigged?

    N a. Spliced into the ring on the stem post
    N b. Secured by a toggle around the outboard side of a forward thwart
    Y c. Secured to the inboard side of a forward thwart and led inboard of the falls
    N d. Secured by a toggle to the stem post and led outboard of the falls

1344: 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

1723: The regulations that were passed to implement MARPOL 73/78 concerning oil pollution apply to a U.S. flag vessel that sails on which waters?

    N a. Inland waters only
    N b. Great Lakes only
    Y c. International waters
    N d. All of the above

1880: The primary reason for placing covers over storage batteries is to __________.

    N a. prevent the accumulation of explosive gases
    N b. protect the hull from leaking electrolyte
    N c. prevent movement of the battery in rough waters
    Y d. protect against accidental shorting across terminals

1953: Which fitting is used to connect the boom to the mast?

    N a. Clevis pin
    N b. Gunter-lug
    Y c. Gooseneck
    N d. Transom

2210: To check stability, a weight of 10 tons is lifted with the jumbo boom whose head is 45 ft. from the ship's centerline. The clinometer show's a list of 5.0° with weight suspended. Displacement including the weight is 9,000 tons. The GM while in this condition is __________.

    Y a. 0.57 foot
    N b. 0.72 foot
    N c. 0.96 foot
    N d. 1.25 feet

2223: Knowing the compass heading that is 90° to the side of a MODU will enable the operator of a survival craft to initially steer __________.

    N a. into the wind
    Y b. away in fire and smoke
    N c. directly to the standby boat
    N d. directly to the nearest land

2332: The amount of LFG that may be loaded into a given tank is determined by __________.

    N a. checking the loading sheet
    N b. loading to within 1 percent of outage
    N c. loading to within 10 percent of the safety relief valve setting
    Y d. filling to the maximum level indicated on the liquid level gauging device

2429: A vessel trimmed by the stern has a __________.

    N a. list
    Y b. drag
    N c. set
    N d. sheer

2434: Your vessel's drafts are: FWD 14'-11", AFT 16'-01"; and the KG is 24.4 feet. What is the righting moment when the vessel is inclined to 30°? (Use the reference material in Section 1, the blue pages, of the Stability Data Reference Book)

    N a. 24,960 foot-tons
    N b. 22,870 foot-tons
    N c. 20,360 foot-tons
    Y d. 18,240 foot-tons

2556: Regulations require that pumprooms on tank vessels carrying grade C liquid cargo with machinery spaces below the freeboard deck be ventilated with __________.

    Y a. power ventilation
    N b. gooseneck vents and flame screens
    N c. at least two ducts extending to the weather deck
    N d. a vent header system

2559: What is NOT a grade B flammable liquid?

    N a. tert-Butylamine
    N b. Allyl chloride
    Y c. Ethyl chloride
    N d. Carbon disulfide

2668: As a vessel changes course to starboard, the compass card in a magnetic compass __________.

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

2841: The distance from the still water level (corrected for tides and storm surge) to the bottom of the hull of a MODU is the __________.

    Y a. air gap
    N b. freeboard
    N c. penetration
    N d. water depth

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.

2925: The free surface effects of a partially full liquid tank decrease with increased __________.

    N a. density of the liquid
    N b. placement of the tank above the keel
    Y c. displacement volume of the MODU
    N d. size of the surface area in the tank

3108: A CO2 extinguisher which has lost 10% of its charge must be __________.

    N a. used at the earliest opportunity
    N b. hydro tested
    Y c. recharged
    N d. weighed again in one month

3347: The DEEP DRILLER is level at a draft of 60 feet in calm water. What is the value of the righting moment?

    N a. 18,118 foot-tons
    N b. 9,059 foot-tons
    N c. 4,529 foot-tons
    Y d. 0 foot-tons

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

3479: A feature of an inflatable raft which helps keep people stationary in rough weather is __________.

    N a. lashings on the floor of the raft for the passenger's feet
    N b. straps from the overhead
    Y c. lifelines on the inside of the raft
    N d. ridges in the floor of the raft

3523: Among the equipment included in the DEEP DRILLER lightweight are the loading hoses, traveling block in the lowest position, anchors, mooring chain, all machinery with liquids to normal operating level, and __________.

    Y a. derrick
    N b. lower hull fuel
    N c. eight anchor buoys
    N d. normal food supplies for 79 persons

3767: When whistle signals are used for launching lifeboats, one short blast means __________.

    N a. "use the float-free method only"
    Y b. "lower all boats"
    N c. "raise all boats"
    N d. "drill is over, secure all boats"

3780: One of the first actions to be taken by survivors when they have boarded an inflatable liferaft is to __________.

    N a. stream the sea anchor
    Y b. take an anti-seasickness pill
    N c. open the pressure relief valve
    N d. drink at least one can of water

3820: Once the daily ration of drinking water in a survival situation has been established, the drinking routine should include __________.

    N a. small sips at regular intervals during the day
    N b. a complete daily ration at one time during the day
    Y c. one-third the daily ration three times during the day
    N d. small sips only after sunset

3854: According to the regulations, the capacity of a liferaft is required to be marked __________.

    N a. on the Muster List ("Station Bill")
    Y b. at the liferaft stowage location
    N c. on the Certificate of Inspection
    N d. in the Operations Manual

3925: Among the valves that must be opened on the DEEP DRILLER to pump bilge water out of the port pump room using both bilge pumps is valve __________.

    N a. 26
    N b. 28
    N c. 36
    Y d. 41

4064: If you are the Master of a towing vessel whose only working radar no longer functions, what must you do?

    Y a. Notify the Captain of the Port (COTP) if you cannot repair it within 96 hours.
    N b. Notify the Officer in Charge of Marine Inspection (OCMI) if you cannot repair it within 48 hours.
    N c. Moor the vessel until it is repaired.
    N d. Anchor the vessel until it is repaired.

4104: The inspection of small passenger vessels of 60 feet in length carrying more than twelve persons on an international voyage is required by the Coast Guard __________. (small passenger vessel regulations)

    N a. once every 6 months
    Y b. once every year
    N c. once every 2 years with a minimum of one reinspection during that period
    N d. once every 3 years with a minimum of two reinspections during that period

4120: Which of the following would be of immediate concern after discovering a large fire in the ship's galley?

    N a. An adjacent storeroom, containing spare parts
    Y b. A storeroom directly above, containing combustible fluids
    N c. An adjacent storeroom, containing mattresses and linen
    N d. An adjacent storeroom, marked "Stewards Stores"

4121: The DEEP DRILLER is observed to be level at a draft of 60.0 feet. At the same time, the calculated load form shows the displacement to be 17,845 long tons, total longitudinal moments 51,466 foot-tons, and total transverse moments -10,000 foot-tons. What is the weight of the missing load?

    N a. 220.7 long tons
    N b. 235.3 long tons
    N c. 253.7 long tons
    Y d. 272.7 long tons

4269: 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.

4284: Failure to comply with, or enforce, the provisions of the "Vessel Bridge-to-Bridge Radiotelephone Act" can result in a __________.

    Y a. $650 civil penalty charged against the person in charge of the vessel
    N b. $1500 civil penalty charged against the person in charge of the vessel
    N c. $500 criminal penalty charged against the Master
    N d. $1500 criminal penalty charged against the Master

4746: The SS AMERICAN MARINER is ready to bunker with drafts of FWD 12'-07", AFT 16'-01". 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-0167

    N a. 1.30 feet
    Y b. 1.07 foot
    N c. 0.96 foot
    N d. 0.82 foot

5156: Your non-oceangoing vessel is required to have a fixed piping system to discharge oily mixtures ashore. What is required at each outlet of this system?

    N a. A 5-gallon can or a fixed containment system
    Y b. A stop valve
    N c. A non-return valve
    N d. A means to stop each pump

5385: While preloading, the COASTAL DRILLER has a total weight of 21,401 kips. The LM are 2,560,416 ft-kips, and the TM are -6,206 ft-kips. What is the starboard leg reaction?

    Y a. 7,099 kips
    N b. 7,134 kips
    N c. 7,151 kips
    N d. 7,203 kips

5487: A measurement device for inspecting anchor chain is the __________.

    N a. slide rule
    Y b. go-no-go gauge
    N c. derrick tape
    N d. amp probe

5655: When the air temperature is just below 32°F, snow FIRST adheres to __________.

    N a. surfaces near the waterline
    N b. vertical surfaces
    Y c. horizontal surfaces
    N d. leeward surfaces

5815: What device is used to measure the force exerted on the rig by a leg of the mooring system?

    N a. Advanced stability computer
    N b. Hole position indicator
    N c. Fathometer
    Y d. Load cell

6041: On offshore drilling units, the fire main system must have enough fire hydrants so that each accessible space may be sprayed with at least __________.

    N a. one spray pattern
    Y b. two spray patterns
    N c. three spray patterns
    N d. four spray patterns

6246: The ventilation system of your ship has fire dampers restrained by fusible links. Which statement is TRUE?

    N a. A fusible link will automatically open after a fire is extinguished and reset the damper.
    N b. Fusible links must be replaced at every inspection for certification.
    Y c. Fusible links must be replaced if a damper is activated.
    N d. Fusible links are tested by applying a source of heat to them.

6445: What is the function of wearing rings found on some centrifugal pumps?

    N a. Absorb erosion of high velocity discharge stream
    N b. Seal pump shaft against entry of air
    Y c. Isolate the outlet side from the inlet side
    N d. Dampen the turbulent discharge flow

6563: When loading or discharging dry mud or cement, crew members should use goggles and __________.

    Y a. facial respirator mask
    N b. ear plugs
    N c. rubberized boots
    N d. fireman's outfit

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

7066: What does blowing tubes accomplish?

    N a. Eliminates unburned fuel oil residues from the firebox
    Y b. Increases boiler efficiency
    N c. Flushes away mineral deposits inside the water tubes
    N d. Cleans soot deposits from the inside of the stack

7365: What is the minimum required GMT for the DEEP DRILLER in winds less than 70 knots while at a draft of 60 feet?

    N a. 0.17 foot
    N b. 2.62 feet
    Y c. 4.34 feet
    N d. 9.12 feet

7583: Stability is determined by the relationship of the center of gravity and the __________.

    N a. water depth
    N b. keel
    N c. center of flotation
    Y d. center of buoyancy

7787: A moment is obtained by multiplying a force by its __________.

    N a. couple
    Y b. lever arm
    N c. moment of inertia
    N d. point of application

8275: In a wire rope mooring system, the fairlead sheave should be a minimum of __________.

    N a. 10-18 times the diameter of the wire rope
    Y b. 18-36 times the diameter of the wire rope
    N c. 36-50 times the diameter of the wire rope
    N d. 50-75 times the diameter of the wire rope

8873: The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). Weather conditions make it necessary to ballast down to survival draft. It is decided to check the stability at the intermediate draft of 32 feet. If the added ballast has an average VCG of 9.03 feet, and the sum of free surface moments is 56,244 foot-tons, what is the new KGL?

    N a. 54.76 feet
    N b. 55.76 feet
    N c. 57.22 feet
    Y d. 61.16 feet

9261: The retrievable subsea units that contain the pilot valves and regulators for operating the subsea blowout preventers are called __________.

    N a. accumulators
    Y b. control pods
    N c. consoles
    N d. shuttle controls

9281: A floating jack-up with displacement of 15,000 kips has its LCG 106 feet aft of frame zero (AF0). If 200 short tons are loaded at 20 feet AF0 and 400 short tons are loaded 149 feet AF0, what is the new LCG?

    N a. 105.5 feet
    Y b. 106.0 feet
    N c. 108.3 feet
    N d. 111.8 feet