USCG General Deck: 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.


19: The vessel's "quarter" is located __________.


104: You are on watch at sea at night when a fire breaks out in #3 hold just forward of the bridge. You would NOT __________.


136: Under the federal regulations, what minimum level of Blood Alcohol Content (BAC) constitutes a violation of the laws prohibiting Boating Under the Influence of Alcohol (BUI) on commercial vessels?


141: On a sea going towing vessel of 150 gross tons, there are six (6) seamen in the deck crew. How many certificated able seamen are required if the voyage is over 600 miles?

    N a. 1
    N b. 2
    N c. 3
    Y d. 4

144: The lookout sights a vessel dead ahead. This should be reported on the bell with __________.

    N a. one bell
    N b. two bells
    Y c. three bells
    N d. four bells

193: On a transpacific voyage, you receive a message from your vessel's operators saying that your vessel has been consigned to Naval Control of Shipping. Further information is contained in __________.

    N a. the Light List
    N b. the International Code of Signals (PUB 102)
    Y c. Radio Navigational Aids (PUB 117)
    N d. the Coast Pilot

198: Battens are fitted in cargo holds across the frames of the vessel from the turn of the bilge upward. The purpose of these cargo battens is __________.

    N a. for securing a snatch block when snaking cargo into the wings of the hold
    Y b. to prevent cargo from coming in contact with the vessel's frames or shell plating
    N c. to provide fittings to which cargo lashings may be secured
    N d. to support the dunnage floors which are laid down between tiers of cargo

215: How does the effect known as "bank suction" act on a single-screw vessel proceeding along a narrow channel?

    N a. It pulls the bow toward the bank.
    N b. It heels the vessel toward the bank.
    N c. It pushes the entire vessel away from the bank.
    Y d. It pulls the stern toward the bank.

224: The term "Shift the Rudder" means __________.

    N a. put the rudder amidships
    N b. use right or left rudder
    N c. check, but do not stop the vessel from swinging
    Y d. change from right to left or left or right

236: As the propeller turns, voids are formed on the trailing and leading edges of the propeller blades causing a loss of propulsive efficiency, pitting of the blades, and vibration. These voids are known as __________.

    N a. advance
    Y b. cavitation
    N c. edging
    N d. slip

284: The beam of a vessel refers to the __________.

    N a. depth between decks
    N b. internal cubic capacity
    N c. molded depth of the vessel
    Y d. width of the vessel

323: You are transporting dangerous cargo on your vessel. The regulations require you to __________.

    Y a. periodically inspect it and make an entry in a log
    N b. keep a warning sign posted nearby
    N c. keep a fire hose run out and ready for use if needed
    N d. allow no chipping or painting in the vicinity of the cargo

329: Litmus paste is used in order to determine __________.

    N a. innage
    Y b. thievage
    N c. ullage
    N d. the tank's datum point

440: If a Master must jettison a container loaded with hazardous material, he must, as soon as possible, notify the __________.

    N a. National Cargo Bureau
    N b. Environmental Protection Agency
    N c. National Hazardous Chemical Response Center
    Y d. nearest Captain of the Port

446: A twin-screw vessel can clear the inboard propeller and maneuver off a pier best by holding a(n) __________.

    N a. forward spring line and going slow ahead on the inboard engine
    N b. after spring line and going slow astern on the outboard engine
    N c. forward spring line and going slow ahead on both engines
    Y d. forward spring line and going slow ahead on the outboard engine

582: In illustration D044DG, the mooring line labeled "E" is called a(n) __________. (DO44DG )

    N a. after spring line
    Y b. bow spring line
    N c. forward breast line
    N d. bow line

618: When considering a vessel's stability, which spaces in a general cargo vessel are the best locations for the carriage of bulk grain?

    Y a. Deep tanks
    N b. Lower holds
    N c. Lower holds at the ends of the vessel
    N d. 'Tween-decks

619: What is NOT a requirement for the safe and effective use of a crude oil washing system?

    N a. Strip all tanks and remove the bottom residue.
    N b. Use an inert gas system while washing tanks.
    Y c. Use portable washing machines to reach areas obscured by structural members in the tanks.
    N d. Decant one meter from the source tank for the tank cleaning machines.

629: You are planning to use a crude oil washing system. What precaution must be taken with the source tank for the washing machines?

    Y a. At least one meter must be decanted from the source tank.
    N b. The oil in the source tank must be sampled for compatibility.
    N c. The source tank must have been crude oil washed at least once in the past 150 days.
    N d. The inert gas system must lower the oxygen content in the source tank to a maximum of 12%.

675: An advantage of the modified Christmas Tree towing method is to __________.

    N a. increase the towing hawser's catenary and provide more spring
    Y b. reduce catenary, allow operation in shallower water, and to release one barge without breaking up the entire tow
    N c. enable one tug and its crew without any outside assistance to make up or break down the tow
    N d. provide rapid delivery of logs from the northwestern United States to Hawaiian sawmills

819: Which pump must be primed?

    N a. Rotary pump
    N b. Reciprocating pump
    Y c. Centrifugal pump
    N d. All of the above

922: You are on watch at sea at night, and a fire breaks out in #3 hold. What would you NOT do immediately?

    N a. Shut down the cargo hold ventilation.
    N b. Sound the fire alarm signal to rouse out all hands.
    N c. Call the Master.
    Y d. Proceed to the space and inspect the extent of the fire.

1007: When using the term "limber system" one is referring to a __________.

    N a. cleaning system
    Y b. drainage system
    N c. strengthening system
    N d. weight reduction system

1261: A vessel operating "in class" has met all the requirements of the __________.

    Y a. ABS or similar society
    N b. insurance company
    N c. U.S. Coast Guard
    N d. U.S. Customs

1307: Which type of ice is a hazard to navigation?

    N a. Ice rind
    N b. Pancake ice
    N c. Frazil ice
    Y d. Growlers

1461: While a vessel is at sea, the mate on watch discovers a fire in one of the hatches. Fire hoses are used to put the fire out and some of the cargo is damaged by water. In marine insurance terms, this partial loss by water is called __________.

    N a. an Act of God
    N b. fire and water damage
    Y c. general average
    N d. particular average

1503: Which knot should be used to send a man over the side when he may have to use both hands?

    N a. Bowline
    Y b. French bowline
    N c. Bowline on a bight
    N d. Running bowline

1520: A welded joint's effectiveness is considered __________.

    N a. 48%
    N b. 90%
    Y c. 100%
    N d. 121%

1611: On a transpacific voyage, you receive a message from your vessel's operators saying that your vessel has been consigned to Naval Control of Shipping. Further information is contained in __________.

    Y a. Radio Aids to Navigation (PUB 117)
    N b. the Coast Pilot
    N c. the International Code of Signals (PUB 102)
    N d. the Light List

1635: In illustration D044DG, the mooring line labeled "B" is called a(n) __________. (DO44DG )

    N a. after breast line
    N b. after spring line
    N c. offshore stern line
    Y d. inshore stern line

1670: The term "strake" is used in reference to __________.

    N a. rudder mountings
    N b. anchor gear
    Y c. hull plating
    N d. vessel framing

1712: You are to load styrene in bulk, which is subject to self-polymerization. You must __________.

    N a. not carry any cargo in the tanks surrounding the tank loaded with styrene
    N b. inject nitrogen to pad any ullage above the styrene to prevent contact with oxygen
    Y c. be furnished with a Certificate of Inhibition to be maintained on the bridge
    N d. use heating coils to maintain the styrene within the temperatures specified by the shipper

1712: You are to load styrene in bulk, which is subject to self-polymerization. You must __________.

    N a. not carry any cargo in the tanks surrounding the tank loaded with styrene
    N b. inject nitrogen to pad any ullage above the styrene to prevent contact with oxygen
    Y c. be furnished with a Certificate of Inhibition to be maintained on the bridge
    N d. use heating coils to maintain the styrene within the temperatures specified by the shipper

1767: What is the name of the mark indicated by the letter E? (DO03DG )

    N a. Fresh water line
    N b. Winter water line
    N c. Tropical water line
    Y d. Summer water line

1771: The agency which assigns load lines and issues Load Line Certificates is the __________.

    Y a. American Bureau of Shipping
    N b. Secretary of Commerce
    N c. U.S. Customs
    N d. U.S. Coast Guard

1795: Which knot represents a double sheet bend? (DO30DG )

    N a. F
    N b. L
    Y c. R
    N d. T

1856: When passing a hawser to the dock you would first use what line?

    N a. Gantline
    Y b. Heaving line
    N c. Preventer
    N d. Warp

1926: How many tons of salt water can be loaded into a flat-ended cylindrical tank with a diameter of 5 feet and a length of 12 feet?

    Y a. 6.73 T
    N b. 7.85 T
    N c. 13.46 T
    N d. 26.93 T

2064: While underway in thick fog you are on watch and hear the cry "man overboard". Which type of maneuver should you make?

    N a. figure eight turn
    N b. Round turn
    N c. Racetrack turn
    Y d. Williamson turn

2113: One major advantage of the round turn maneuver in a man overboard situation is that it __________.

    Y a. is the fastest method
    N b. is easy for a single-screw vessel to perform
    N c. requires the least shiphandling skills to perform
    N d. can be used in reduced visibility

2168: What is the name of tackle number 6? (DO29DG )

    N a. Triple purchase
    N b. Clew garnet tackle
    N c. Boat falls
    Y d. Threefold purchase

2206: You are using tackle number 6 in illustration DO29DG to lift a weight of 300 lbs. If you include 10 percent of the weight for each sheave for friction, what is the pull on the hauling part required to lift the weight? (DO29DG )

    Y a. 80 lbs.
    N b. 69 lbs.
    N c. 55 lbs.
    N d. 50 lbs.

2227: You are using tackle number 4 in illustration DO29DG to lift a weight of 120 lbs. If you include 10 percent of the weight for each sheave for friction, what is the pull on the hauling part required to lift the weight? (DO29DG )

    N a. 20 lbs.
    N b. 30 lbs.
    Y c. 42 lbs.
    N d. 57 lbs.

2240: What is the mechanical advantage of tackle number 1? (DO29DG )

    N a. 0.5
    Y b. 1
    N c. 1.5
    N d. 2

2350: A temporary wire eye splice made with three wire rope clamps will hold approximately what percentage of the total rope strength?

    N a. 20%
    N b. 50%
    Y c. 80%
    N d. 99%

2352: The recessed areas on a wildcat are called __________.

    N a. pawls
    N b. sockets
    Y c. pockets
    N d. devil's claws

2804: Which publication is NOT carried on board U.S. merchant vessels operating under Naval Control of Shipping?

    N a. Allied Control of Shipping Manual - Guide to Masters
    N b. Communications Supplement
    Y c. Tactical Control and Routing of Merchant Vessels
    N d. All of the above are carried on board

3000: The pipe used to connect two separate piping systems on a tank vessel is known as a __________.

    Y a. crossover
    N b. transfer
    N c. connection
    N d. junction

3000: The pipe used to connect two separate piping systems on a tank vessel is known as a __________.

    Y a. crossover
    N b. transfer
    N c. connection
    N d. junction

3294: Your vessel is to dock bow in at a pier without the assistance of tugboats. Which line will be the most useful when maneuvering the vessel alongside the pier?

    N a. Bow breast line
    N b. Stern breast line
    Y c. Bow spring line
    N d. Inshore head line

3327: The upward slope of a vessels bottom from the keel to the bilge is called __________.

    N a. camber
    N b. sheer
    N c. rake
    Y d. rise of bottom

3352: The signal man assisting the crane operator has his arm extended, his fingers closed, and his thumb pointing downward. This is the signal to __________.

    N a. hoist the load
    N b. raise the boom
    Y c. lower the boom
    N d. lower the load

3374: Angular motion about the longitudinal axis of a vessel is known as __________.

    N a. pitch
    N b. surge
    N c. sway
    Y d. roll

3431: A high cube container is designed specifically to __________.

    Y a. carry low density cargoes
    N b. protect fragile cargoes
    N c. stow cargoes with concentrated weights such as machinery
    N d. carry cargoes of very low stowage factors

3472: You are the Master of a 500 gross ton passenger vessel operating on rivers. Your vessel accidentally runs aground. Under the regulations for passenger vessels, you must notify the __________.

    Y a. nearest Coast Guard Marine Safety or Marine Inspection Office as soon as possible
    N b. Coast Guard only if the grounding results in damage to property in excess of $(SA)25,000
    N c. Coast Guard only if the grounding results in a loss of life
    N d. Coast Guard only if the grounding results in injury to personnel

3518: A tug's horsepower available at the shaft is __________.

    N a. indicated horsepower
    Y b. brake horsepower
    N c. dynamic horsepower
    N d. net horsepower

4215: The electrical components for each single crane are installed in its __________.

    N a. crane house
    N b. machinery base
    N c. turntable
    Y d. All of the above

4231: The 30 ton capacity pedestal cranes shown in the illustration can lift a maximum weight of how many tons in the single mode? (D047DG )

    N a. 15 tons
    Y b. 30 tons
    N c. 60 tons
    N d. 120 tons

4238: Most pedestal crane power is provided by __________.

    Y a. Electro-hydraulic units
    N b. Steam units
    N c. Independent internal combustion power units
    N d. All of the above

4252: Which action(s) is/are included in crane operations?

    N a. Normal boom stowage and shutdown operations
    N b. Emergency shutdown operation
    N c. Removing booms from stowage
    Y d. All of the above