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.


232: You are tending the lifeline of a person who has entered a compartment wearing a breathing apparatus. How many tugs of the lifeline mean "Are you all right"?


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 __________.


333: Which statement is TRUE concerning life preservers (Type I personal flotation devices)?


449: On a vessel of 9,000 tons displacement there are two slack deep tanks of palm oil (SG .86). Each tank is 40 feet long and 30 feet wide. What is the reduction in metacentric height due to free surface with the vessel in sea water (SG 1.025)?

    N a. .27 ft
    Y b. .48 ft
    N c. .57 ft
    N d. .74 ft

636: What is required by regulations concerning the stowage of lifeboats on cargo vessels?

    Y a. Each lifeboat must have a launching appliance.
    N b. Launching appliances must be of the gravity type.
    N c. There may not be more than two launching appliances on the same deck.
    N d. All of the above

1048: The angle of maximum righting arm corresponds approximately to the angle of __________.

    Y a. deck edge immersion
    N b. the load line
    N c. downflooding
    N d. loll

1100: The maximum speed of lowering for a lifeboat on gravity davits is controlled by the __________.

    N a. limit switches
    N b. emergency disconnect switch
    Y c. governor brake
    N d. position of the counterweight on the brake handle

1115: When launching a lifeboat, the tricing pennants should be released __________.

    N a. before the boat is lowered from the stowed position
    N b. as the boat-fall blocks break clear of the davit head
    Y c. before the boat is lowered from the embarkation level
    N d. after the boat is released into the water

1213: When a wind force causes a vessel 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. center of buoyancy remains the same
    N d. deck-edge immersion occurs

1390: Which sequence is correct when launching a lifeboat stowed in gravity davits?

    N a. Release gripes, turn on emergency disconnect switch, release frapping lines
    N b. Release tricing pennants, turn on emergency disconnect switch, release frapping lines
    N c. Operate limit switches, release gripes, lift brake
    Y d. Release gripes, lift brake, release tricing pennants

1393: You are reading the draft marks. The water level is about 4 inches below the bottom of the number 11. What is the draft? (D032DG )

    Y a. 10'-08"
    N b. 10'-10"
    N c. 11'-04"
    N d. 11'-08"

1437: You are in a lifeboat when you sight the stars. You will be heading due north when you head for Polaris which is indicated by which letter? (D007SA )

    Y a. F
    N b. G
    N c. J
    N d. K

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

1650: When compared to low-expansion foam, a high-expansion foam will __________.

    Y a. be drier
    N b. be heavier
    N c. be more heat resistant
    N d. not cling to vertical surfaces

1666: The SS AMERICAN MARINER has the following drafts: FWD 10'-04", AFT 14'-08". Upon completion of loading and bunkering the items listed will be on board. Use the white pages of The Stability Data Reference Book to determine the minimum GM required to meet a one compartment standard. ST-0045

    Y a. 1.91 feet
    N b. 2.09 feet
    N c. 2.21 feet
    N d. 2.48 feet

1725: The most effective treatment for warming a crew member suffering from hypothermia is __________.

    N a. running or jumping to increase circulation
    N b. raising body temperature rapidly by placing hands and feet in hot water
    Y c. bundling the body in blankets to rewarm gradually
    N d. laying prone under heat lamps to rewarm rapidly

1768: The flammable limit of methyl ethyl ketone is from __________.

    Y a. 1.8% to 11.5%
    N b. 6.6% to 12.1%
    N c. 9.6% to 15.1%
    N d. 12.2% to 18.1%

1794: Which statement concerning GMDSS Radio Operator requirements is FALSE?

    N a. Each compulsory vessel must carry at least two licensed GMDSS Radio Operators at all times while at sea.
    N b. Each compulsory vessel must carry at least two licensed Radio Operators at all times while at sea and may elect to carry a GMDSS Radio Maintainer as well.
    Y c. Communications involving safety of life at sea do not have to be logged as long as the compulsory vessel was not involved in such communications.
    N d. While at sea, adjustments to, and the maintaining of, GMDSS equipment may be performed by the GMDSS Radio operator as long as the work is supervised by an onboard licensed GMDSS Radio Maintainer.

1811: What should be your FIRST action if you discover a fire aboard ship?

    Y a. Sound the alarm.
    N b. Attempt to put out the fire.
    N c. Confine it by closing doors, ports, vents, etc.
    N d. Call the Master.

1859: The parts of the sail shown are correctly labeled EXCEPT the __________. (D003SL )

    N a. head
    N b. leach
    Y c. luff
    N d. tack

1909: On a passenger vessel, the vessel's name must appear on __________.

    N a. ring life buoy
    N b. lifeboats
    N c. lifeboat oars
    Y d. All of the above

1945: What is the best method to overcome the effects of shadowing when attempting to place an INMARSAT-B call?

    Y a. A small course change should work.
    N b. Select a CES that serves the INMARSAT satellite that will handle the call.
    N c. Installing a shadow correction filter will compensate in fringe areas.
    N d. Turning on compensators will work in all but extreme cases of shadowing.

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.

2292: Grade D liquids are those having flash points of __________.

    N a. 80°F or less
    Y b. greater than 80°F and less than 150°F
    N c. 150°F or greater but less than 212°F
    N d. 212°F or greater

2360: According to regulations, ethylene oxide shall be loaded at a temperature below __________.

    N a. 90°F
    Y b. 70°F
    N c. 51°F
    N d. its flash point

2431: A device used to enlarge the size of an existing bore hole, having teeth arranged on its outside circumference to cut the formation as it rotates is a(n) __________.

    N a. enlarger bit
    N b. casing bit
    Y c. hole opener
    N d. casing opener

2526: The SS AMERICAN MARINER is ready to sail with the load shown. Use the white pages of The Stability Data Reference Book to determine the available GM. ST-0069

    N a. Available GM 4.2 ft
    Y b. Available GM 3.9 ft
    N c. Available GM 3.7 ft
    N d. Available GM 3.5 ft

2653: The deck loads on a MODU are distributed through the deck beams to the __________.

    Y a. frames
    N b. hull
    N c. stringers
    N d. plates

2882: Whenever an inspected vessel is dry-docked for major repairs, the person in charge of the vessel, the owner or the agent should report this to the __________. (small passenger vessel regulations)

    Y a. Officer in Charge, Marine Inspection
    N b. National Cargo Bureau, Inc.
    N c. American Boat and Yacht Council, Inc.
    N d. All of the above

2893: The downflooding angle for a MODU is the maximum angle at which __________.

    N a. stability is positive
    N b. neutral equilibrium exists
    N c. the load line is not submerged
    Y d. intact stability curves are valid

2979: Which vessel is required to carry a Category I, 406 MHz EPIRB installed to automatically float free and activate? (small passenger vessel regulations)

    N a. A vessel operating exclusively on inland waters
    N b. A vessel limited to 20 miles offshore, which carries a radiotelephone on board
    Y c. A vessel operating on the high seas or beyond 3 miles from the coastline of the Great Lakes
    N d. A vessel limited to 100 miles offshore

2990: The SS AMERICAN MARINER arrived in port with drafts of: FWD 28'-04", AFT 30'-08". 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-0092

    N a. FWD 29'-01", AFT 30'-01"
    N b. FWD 29'-03", AFT 29'-11"
    Y c. FWD 29'-05", AFT 29'-09"
    N d. FWD 29'-07", AFT 29'-07"

3039: What is a requirement for remote manual shutdown stations for internal combustion engine driven cargo pumps on tank barges?

    Y a. They must be conspicuously marked.
    N b. They must be located at least 10 feet from the engine.
    N c. There must be at least two such shutdown devices.
    N d. The valve rods shall be fitted with stuffing boxes.

3142: In the machinery space of all uninspected motor vessels, there must be one type B-II hand portable fire extinguisher for every __________. (Uninspected Vessel Regulations)

    N a. 500 S.H.P. of the main engines or fraction thereof
    N b. 1000 S.H.P. of the main engines or fraction thereof
    N c. 500 B.H.P. of the main engines or fraction thereof
    Y d. 1000 B.H.P. of the main engines or fraction thereof

3144: On a lifeboat equipped with Rottmer-type releasing gear, turning the releasing lever releases __________.

    N a. the painter
    N b. the after boat fall only if the boat is waterborne
    N c. both falls at the same time only if the boat is waterborne
    Y d. both falls at the same time even if the boat has not reached the water

3272: Where should life jackets be stowed? (Small Passenger Vessel Regulations)

    N a. In the forepeak
    N b. In the wheelhouse
    Y c. Throughout the accommodation spaces
    N d. In locked watertight and fireproof containers on or above the main deck

3279: You have orders to drop off a barge loaded with propylene oxide at a fleet. In doing so, you must ensure that __________.

    N a. all wing voids and rakes are pumped dry before tying off the barge
    N b. the barge is moored next to the bank where it will be protected from a possible collision
    Y c. the barge is under the care of a watchman
    N d. a rake end is facing upstream to minimize the effect of current on the mooring lines

3371: The DEEP DRILLER at a draft of 60.0 feet discharges 68.94 long tons of ballast. What is the new draft?

    N a. 66.0 feet
    N b. 60.5 feet
    Y c. 59.5 feet
    N d. 55.0 feet

3445: The DEEP DRILLER, at a draft of 55 feet, has a KGT of 53.05 feet and TCG of 0.5 foot to starboard. What is the list angle?

    N a. 2.0°Starboard
    Y b. 2.9°Starboard
    N c. 3.2°Starboard
    N d. 3.5° starboard

3691: While drilling loaded as shown in Sample Load Form #4 (Drilling), the DEEP DRILLER suffers an unexpected but slowly increasing port and forward inclination. The wind and waves are light. This inclination could have been caused by __________.

    N a. the failure of mooring lines 5 and 6
    N b. the drilling crew dumping the mud
    N c. the drill string breaking
    Y d. ballast tanks equalizing into tank 1P

3824: After abandoning a vessel, water consumed within the first 24 hours __________.

    Y a. will pass through the body with very little being absorbed by the system
    N b. will help prevent fatigue
    N c. will quench thirst for only two hours
    N d. help prevent seasickness

3865: What is the minimum required number of ring life buoys on an OSV certified for ocean service?

    N a. 4
    Y b. 8
    N c. 12
    N d. 16

4061: In the DEEP DRILLER, TCG is obtained from the sum of the transverse moments by __________.

    N a. adding the free surface correction
    N b. subtracting the free surface correction
    N c. multiplying by displacement
    Y d. dividing by displacement

4139: Rotation of the steering wheel on the navigation bridge initiates oil pressure being applied to the steering gear rams by __________.

    N a. regulating the oil flow with the six-way valve
    N b. moving the automatic differential valve
    N c. moving the follow up indicator which regulates the six-way valve
    Y d. varying the angle of a tilting box or eccentricity of a floating ring

4593: The COASTAL DRILLER, while drilling, has a total weight of 15,400 kips. The LCG is 120.00 feet AF0, and the TCG is -0.5 feet to port of the centerline. What is the port leg reaction?

    N a. 5,063 kips
    N b. 5,104 kips
    Y c. 5,233 kips
    N d. 5,345 kips

4607: On the COASTAL DRILLER, the level of water in each of two pump bilge pits is monitored by hydrostatic alarm switches connected to a remote panel located in the __________.

    N a. OIM's quarters
    Y b. OIM's office
    N c. control house
    N d. SCR room

4742: You are scheduled to load 4700 tons of cargo, 45 tons of crew effects and stores and 323 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. 19'-03"
    Y c. 19'-07"
    N d. 20'-01"

5123: In MODU construction, bulkheads in the quarters are generally __________.

    N a. structural
    N b. watertight
    Y c. non-structural
    N d. continuous

5633: In ballasting to survival draft, while in transit, due to extreme wind and wave loads, thrusters or propulsion, if available, should be used to __________.

    N a. reduce windward mooring tensions
    Y b. maintain vessel heading
    N c. maximize accelerations
    N d. increase speed of advance

6271: During storm conditions on a MODU, the mooring tensions should be adjusted so that __________.

    N a. all mooring lines have a different tension
    N b. the leeward lines have higher tension than the windward lines
    Y c. the maximum tension of the most heavily loaded line does not exceed the safe working load
    N d. all horizontal tension forces on the windward lines are no greater than the vertical tension forces

6415: While drilling ahead with 60 foot draft, the DEEP DRILLER encounters lost circulation and loses 460 barrels of 16 pounds per gallon mud to the hole. What is the resulting draft if no additional ballast is taken on?

    N a. 57 feet
    N b. 58 feet
    Y c. 59 feet
    N d. 60 feet

6925: After a report of casualty to a mobile offshore drilling unit, what record must be kept on board?

    N a. The Oil Record Book
    Y b. The crane record book
    N c. All chart catalogs
    N d. The machinery maintenance logbook

6991: The FIRST treatment of a person suspected of having airway burns is to __________.

    N a. move him to a cool location
    Y b. maintain an open airway
    N c. apply a cool damp dressing to his neck
    N d. have him drink cool liquids

7023: Heat exhaustion is caused by excessive __________.

    N a. loss of body temperature
    Y b. loss of water and salt from the body
    N c. gain in body temperature
    N d. intake of water when working or exercising

7371: The condition where a MODU on the end of a tow line is riding a wave crest at the same time as its tug rides a wave crest is known as riding in __________.

    N a. synchronism
    N b. harmony
    N c. check
    Y d. step

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

8371: Each cylinder in a two stroke cycle engine experiences combustion __________.

    Y a. once each crankshaft revolution
    N b. twice each crankshaft revolution
    N c. every other crankshaft revolution
    N d. every fourth stroke

8853: While underway in a field move with the lower hulls awash, a semisubmersible has a maximum allowable KG of 63.69 feet; KMT is 65.12 and KML is 64.92. The KGT is 56.13 and KGL is 55.89. What is the margin on the maximum allowable KG?

    N a. 1.43 feet
    Y b. 7.56 feet
    N c. 7.80 feet
    N d. 8.99 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

9493: On a vessel, multiplying a load's weight by the distance of the load's center of gravity above the baseline results in a(n) __________.

    N a. transverse moment
    Y b. vertical moment
    N c. righting moment
    N d. inclining moment