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.


33: Inflatable liferafts are less maneuverable than lifeboats due to their __________.


131: A vessel is floating at a mean draft of 16 feet. At this draft, the displacement is 8,000 tons. The length of the vessel is 475 ft., beam is 55 ft., TPI is 45. Calculate KM. (See P-value, K-value table in the blue pages of the Stability Data Reference Book)


191: Where will you find the requirements for the lights that must be displayed on a mobile offshore drilling unit that is being towed?


362: Water fog from an all-purpose nozzle may be used to __________.

    N a. fight an electrical fire
    N b. fight a magnesium fire
    Y c. eliminate smoke from a compartment
    N d. All of the above

513: Number 3 lifeboat would be __________.

    N a. the forward boat on the starboard side
    N b. behind boat number 1 on the port side
    Y c. behind boat number 1 on the starboard side
    N d. behind boat number 2 on the port side

569: A shaft alley divides a vessel's cargo hold into two tanks, each 25 ft. wide by 50 ft. long. Each tank is filled with salt water below the level of the shaft alley. The vessel's displacement is 6,000 tons. What is the reduction in GM due to free surface effect?

    N a. .56 foot
    N b. .58 foot
    Y c. .62 foot
    N d. .66 foot

723: The color of the signal flare sent up by a submarine to indicate an emergency condition within the submarine is __________.

    Y a. red
    N b. white
    N c. yellow
    N d. green

895: Air-cooled gasoline auxiliary engines are allowed on vessels not more than 65 feet in length, carrying not more than 12 passengers if __________.

    N a. it is not practicable to supply water to the engine
    Y b. they have a self-contained fuel system and are installed on an open deck
    N c. they are rated at not more than 4.5 horsepower
    N d. All of the above

933: You are at sea on a vessel whose beam is 40 feet and the full rolling period is 20 seconds. What is the estimated metacentric height of the vessel?

    N a. 0.3 ft.
    N b. 0.5 ft.
    Y c. 0.8 ft.
    N d. 1.1 ft.

993: If your vessel has a GM of one foot and a breadth of 50 feet, what will be your full rolling period?

    N a. 11 seconds
    N b. 15 seconds
    N c. 20 seconds
    Y d. 22 seconds

1041: The SS AMERICAN MARINER is ready to load the cargo listed. There is already 2685 tons of cargo on board with a KG of 27.4 feet. Use the white pages of the Stability Data Reference Book to determine the final KG of all the cargo after loading is completed. ST-0022

    N a. KG 25.4 feet
    Y b. KG 26.0 feet
    N c. KG 26.6 feet
    N d. KG 27.2 feet

1116: Line throwing apparatus aboard ship must contain __________.

    N a. two rockets, one of which shall be the buoyant type
    N b. three rockets, one of which shall be the buoyant type
    Y c. four rockets, two of which shall be the buoyant type
    N d. five rockets, two of which shall be the buoyant type

1137: One gallon of low expansion foam solution will produce about __________.

    Y a. 10 gallons of foam
    N b. 25 gallons of foam
    N c. 100 gallons of foam
    N d. 500 gallons of foam

1229: Which T-Boat must be fitted with a suitable compass?

    N a. A vessel in river service
    N b. A vessel operating on a short, restricted route on lakes, bays, and sounds
    Y c. A vessel engaged in ocean or coastwise service
    N d. The regulations do not require a compass on any vessel

1567: Your vessel is carrying 84,000 barrels of oil for discharge. The cargo hoses have an inside diameter of 14 inches. When four hoses are connected to the manifold, the container around the manifold must hold a total of how many barrels?

    N a. Three
    Y b. Four
    N c. Twelve
    N d. Sixteen

1696: Which statement(s) is(are) TRUE?

    N a. Polyester sailcloth, such as Dacron, is resistant to rot due to moisture but susceptible to UV degradation and should be kept covered as much as possible.
    N b. Canvas sailcloth is susceptible to rot due to moisture and should never be covered when wet.
    N c. Kevlar sail cloth is susceptible to weakening due to repeated folding and therefore should be draped loosely over the boom when stowed.
    Y d. All of the above are true.

1793: What is the minimum permit or license requirement of a GMDSS Radio Maintainer?

    N a. Holding the Marine Radio Operator Permit is a pre-requisite before the GMDSS Maintainer Endorsement can be obtained
    N b. Holding a valid GMDSS Radio Operator license is sufficient
    Y c. Holding the GMDSS Radio Maintainer license is sufficient
    N d. Holding the GMDSS Radio Operator license for at least one year is a prerequisite to holding the GMDSS Radio Maintainer license

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

1921: Certificates of Inspection for offshore drilling units are issued for a period of __________.

    N a. 12 months
    Y b. 24 months
    N c. 36 months
    N d. 48 months

1995: Who is responsible for insuring that each survival craft on a mobile offshore drilling unit is cleaned and inspected once a year?

    N a. The certificated lifeboatman assigned to that craft
    N b. The certificated able seaman assigned to that craft
    N c. The Coast Guard inspecting officer
    Y d. The designated person in charge of the rig

2044: INTERNATIONAL AND INLAND You are under sail making 5 knots. The apparent wind is broad on the port beam at 10 knots. You see another sailing vessel dead ahead on a meeting course. What action is correct?

    N a. Both vessels must maneuver to avoid collision.
    Y b. You must keep out of the way of the other vessel.
    N c. Only the other vessel must maneuver to avoid collision.
    N d. You are only required to maneuver if collision cannot be avoided by maneuver of the other vessel.

2074: You have 4 containers of rig supplies each measuring 8'L by 8'B by 8'H and weighing 1.2 tons each. Each container is stowed on deck. What is the maximum VCG permitted of the remaining cargo if you are carrying rig water and load to maximum capacity? (See illustration D037DG, stability letter for M.V. Surveyor) (D037DG )

    N a. 1.33 feet
    Y b. 1.68 feet
    N c. 1.96 feet
    N d. 2.16 feet

2116: You have 10 containers of rig supplies each measuring 10'L by 6'B by 6'H and weighing 1.8 tons each. Each container is stowed on deck. What is the maximum VCG permitted of the remaining cargo if you are carrying rig water and load to maximum capacity? (See illustration D037DG, stability letter for M.V. Surveyor) (D037DG )

    Y a. 0.94 foot
    N b. 1.36 feet
    N c. 1.78 feet
    N d. 1.96 feet

2371: What does the term "head" mean when applied to a fire pump?

    N a. Length of the discharge pipe
    N b. Height of the discharge pipe
    Y c. Difference between the discharge and suction pressures
    N d. Sum of discharge and suction pressures

2394: Your vessel's drafts are FWD 24'-09", AFT 27'-01". Use the information in Section 1, the blue pages, of the Stability Data Reference Book to determine the final drafts if 122 tons are discharged 76 feet aft of amidships, 128 tons are discharged 54 feet forward of amidships, and 68 tons of fuel is pumped 48 feet aft.

    N a. FWD 24'-01", AFT 26'-08"
    N b. FWD 24'-02", AFT 26'-11"
    Y c. FWD 24'-04", AFT 26'-08"
    N d. FWD 24'-05", AFT 26'-02"

2437: A heavy steel device that is set on the sea floor and used as a drilling template in offshore drilling operations is called a __________.

    Y a. temporary guide base
    N b. permanent guide base
    N c. guide frame
    N d. foundation template

2740: The SS AMERICAN MARINER arrived in port with drafts of: FWD 19'-06.6", AFT 20'-05.6". Cargo was loaded and discharged as shown. Use sheet 2 in the white pages of The Stability Data Reference book to determine the final drafts. ST-0079

    Y a. FWD 20'-06", AFT 21'-02"
    N b. FWD 18'-06", AFT 19'-09"
    N c. FWD 18'-10", AFT 20'-05"
    N d. FWD 20'-03", AFT 21'-05"

2912: The SS AMERICAN MARINER is ready to bunker with drafts of FWD 11'-01", AFT 15'-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-0086

    Y a. 0.68 foot
    N b. 0.85 foot
    N c. 0.97 foot
    N d. 1.30 feet

3010: 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-0096

    Y a. Available GM 4.07 ft
    N b. Available GM 4.60 ft
    N c. Available GM 4.69 ft
    N d. Available GM 4.81 ft

3014: Using the information in Section 1, the blue pages, of the Stability Data Reference Book, determine the danger angle for permanent list if the KG is 21.8 feet and the drafts are: FWD 19'-05", AFT 20'-01".

    N a. 52°
    N b. 45°
    N c. 31°
    Y d. 26°

3037: An immersion suit should be equipped with a/an __________.

    N a. air bottle for breathing
    N b. whistle and hand held flare
    Y c. whistle, strobe light and reflective tape
    N d. whistle, hand held flare and sea dye marker

3070: Your vessel's drafts are: FWD 14'-04", AFT 12'-08". How much more cargo can be loaded to have the vessel down to the freeboard draft? (Use the information in Section 1, the blue pages, of the Stability Data Reference Book)

    N a. 6500 tons
    N b. 7001 tons
    N c. 7415 tons
    Y d. 8699 tons

3139: Open ullage holes in tanks which are not gas-free must be protected by __________.

    N a. PV valves
    N b. warning signs
    Y c. flame screens
    N d. stop-check valves

3182: What is the minimum number of portable fire extinguishers required on board a 45-foot motorboat having a fixed fire system on board? (Uninspected Vessel Regulations)

    N a. 1 B-I
    Y b. 2 B-I
    N c. 3 B-I
    N d. 4 B-I

3369: Several vessels are at an anchorage. You wish to communicate with the vessel bearing 046°T from you but do not know the vessels call letters. Which flag hoist should NOT be used to establish communications?

    N a. CS
    Y b. RQ A046
    N c. VF
    N d. YQ3 A046

3467: An emergency sea anchor may be constructed by using __________.

    N a. a boat bucket
    N b. an air tank filled with water
    N c. an oar and canvas weighted down
    Y d. All of the above

3477: What is the increase in the transverse free surface correction for the DEEP DRILLER at a draft of 60 feet if 103.48 long-tons of ballast are transferred from a full ballast tank 1P to an empty ballast tank 10S?

    N a. 0.47 foot
    Y b. 0.32 foot
    N c. 0.27 foot
    N d. 0.13 foot

3635: For the DEEP DRILLER, in deballasting to survival draft when threatened with heavy weather from 100 knot winds, a load form should be calculated to determine that __________.

    N a. the maximum allowable KG is exceeded
    N b. KG corrected for free surface effects does not exceed 62.24 feet
    Y c. KG corrected for free surface effects does not exceed 62.09 feet
    N d. GM remains the same

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

4028: Fire protection regulations for towing vessels allow all of these types of fuel piping, EXCEPT ____________ .

    N a. steel
    N b. aluminum in an aluminum-hulled vessel
    Y c. schedule 80 fire resistant plastic pipe
    N d. nickel-copper, copper-nickel or annealed copper

4070: Motor-propelled lifeboats are required to be fitted with which of the following?

    Y a. Compartments for the storage of canned drinking water
    N b. Ballast tanks to prevent the boat from capsizing
    N c. An air starter on the diesel engine
    N d. Auxiliary mechanical propulsion (Fleming gear)

4204: You are loading in a port subject to the summer load line mark and bound for a port subject to the tropical load line mark. You will enter the tropical zone after steaming four days. You will consume 33 tons of fuel, water, and stores per day. The hydrometer reading at the loading pier is 1.006, and the average TPI is 66. What is the minimum freeboard required at the start of the voyage? (Get Table Data)

    Y a. 78 inches
    N b. 82 inches
    N c. 86 inches
    N d. 88 inches

4229: You are loading in a port subject to the tropical load line mark and bound for a port subject to the winter load line mark. You will enter the summer zone after steaming one and one-half days, and you will enter the winter zone after a total of six days. You will consume 29 tons of fuel, water, and stores per day. The hydrometer reading at the loading pier is 1.006, and the average TPI is 43. What is the minimum freeboard required at the start of the voyage? (Get Table Data)

    N a. 79.5 inches
    Y b. 76.5 inches
    N c. 75.0 inches
    N d. 72.5 inches

4683: What is the change in longitudinal moments for the Coastal Driller if 2.5 feet of drill water is discharged from drill water tank #23?

    N a. 1,671 ft-kips
    N b. -161 ft-kips
    N c. -4,708 ft-kips
    Y d. -20,052 ft-kips

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

5181: The DEEP DRILLER departs a fresh water port at a draft of 19.5 feet. What will be the draft in sea water?

    N a. 18.7 feet
    Y b. 19.1 feet
    N c. 19.4 feet
    N d. 19.8 feet

5267: The DEEP DRILLER, loaded as shown in Sample Load Form #4 (Drilling), suffers major damage which results in flooding in tank C3S. Pumping from tanks in the vicinity of the damage have proven ineffective. Your best countermeasure is to __________.

    Y a. counterflood in 1P
    N b. counterflood in 10S
    N c. pump from C1P
    N d. pump from C3S

5743: The safest device used to secure the end of the pendant wire when it is initially passed to the anchor handling vessel is a __________.

    N a. pelican hook
    Y b. hydraulic deck stopper
    N c. connecting link
    N d. shackle

5821: Why should you preload a mooring system above your precalculated operating mooring tensions?

    Y a. This serves as a benchmark for increasing tensions in rough weather.
    N b. This allows you to determine existing bottom conditions.
    N c. This insures that the anchor cable is stretched out in a straight line.
    N d. This tests all the components of your mooring equipment.

5825: The tension on an anchor cable increases so that the angle of the catenary to the seabed at the anchor reaches 10 degrees. How will this affect the anchor in sandy soil?

    N a. It will have no effect.
    N b. It will increase the holding power.
    Y c. It will reduce the holding power.
    N d. It will cause the anchor to snag.

6033: During a fire drill on a MODU, what action is required?

    Y a. Start each fire pump
    N b. Launch and run a lifeboat
    N c. Inventory rescue and fire equipment
    N d. Inspect fire hoses

6196: You are tending the lifeline of a man who entered a compartment using a breathing apparatus. How many tugs on the lifeline indicate the man should advance?

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

7337: If you log a distress message, it must include the __________.

    N a. sea state
    N b. names of witnesses
    Y c. time of its occurrence
    N d. wind direction and velocity

7631: At an angle of loll, the capsizing moment is __________.

    N a. maximum
    N b. negative
    N c. positive
    Y d. zero

8257: When taking soundings on a floating MODU, the tape should be lowered and brought back quickly to __________.

    N a. reduce the time the sounding tube is open
    N b. avoid creating a spark
    Y c. lessen the effect of roll or pitch on the reading
    N d. lessen the effect of heave on the reading

8361: What is the effect of heated intake air on a diesel engine?

    N a. Increases efficiency
    N b. Increases engine horsepower
    N c. Increases engine life
    Y d. Reduces engine horsepower

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

9121: The blocking or absence of fire dampers can cause __________.

    N a. the accumulation of explosive gases
    N b. faster cooling of the fire
    Y c. the fire to spread through the ventilation system
    N d. fixed foam systems to be ineffective

9342: The ventilation system of your ship has fire dampers restrained by fusible links. Which statement is TRUE?

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

9375: After extinguishing a paint locker fire using the fixed CO2 system, the next action is to have the space __________.

    N a. opened and burned material removed
    Y b. left closed with vents off until all boundaries are cool
    N c. checked for oxygen content
    N d. doused with water to prevent reflash