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.


154: The standard rate of signaling by flashing light is __________.


340: Which statement about the free surface correction is TRUE?


432: One advantage of the "all-purpose nozzle" is that it __________.


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

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

472: When the handle of an all-purpose nozzle is pulled all the way back, it will __________.

    N a. produce high-velocity fog
    N b. produce low-velocity fog
    Y c. produce a straight stream
    N d. shut off the water

585: How long must a "Declaration of Inspection" be kept on board?

    N a. One week
    N b. Two weeks
    Y c. One month
    N d. Three months

678: Fire may be spread by which means?

    N a. Conduction of heat to adjacent surfaces
    N b. Direct radiation
    N c. Convection
    Y d. All of the above

712: Which statement is TRUE concerning the application of foam on an oil fire?

    N a. It cools the surface of the liquid.
    N b. It gives protection to fire fighting personnel against the heat of the fire.
    Y c. It forms a smothering blanket on the surface of the oil.
    N d. It should be used at the same time a solid stream of water is being applied.

727: Under the "Vessel Bridge-to-Bridge Radiotelephone Act", failure of a vessel's radiotelephone equipment __________.

    N a. constitutes a violation of the Act
    N b. obligates the operator to moor or anchor the vessel immediately
    N c. requires immediate, emergency repairs
    Y d. does not, in itself, constitute a violation of the Act

860: A ship's forward draft is 22'-04" and its after draft is 24'-00". The draft amidships is 23'-04". This indicates a concentration of weight __________.

    N a. at the bow
    N b. in the lower holds
    Y c. amidships
    N d. at the ends

952: Which is the proper method of determining whether a portable CO2 fire extinguisher needs recharging?

    N a. Check the tag to see when the extinguisher was last charged.
    N b. Release a small amount of CO2; if the CO2 discharges, the extinguisher is acceptable.
    Y c. Weigh the extinguisher and compare the weight against that stamped on the valve.
    N d. Recharge the extinguisher at least once each year.

1012: The discharge from a carbon dioxide fire extinguisher should be directed __________.

    Y a. at the base of the flames
    N b. at the center of the flames
    N c. to the lee side of the flames
    N d. over the tops of the flames

1019: You are operating 10 miles offshore with three people aboard. What kind of survival craft must you carry?

    N a. An inflatable liferaft with a coastal pack
    N b. A life float
    N c. An inflatable buoyant apparatus
    Y d. No survival craft is required.

1026: A liferaft with a capacity of 8 people used in ocean service is required by regulations to carry __________.

    N a. 8 liters of fresh water
    N b. 12 units of provisions
    Y c. 12 liters of fresh water
    N d. 24 units of provisions

1079: Which alarm is NOT found on an inert gas system?

    Y a. Low oxygen alarm
    N b. Low pressure alarm
    N c. Scrubber high water level alarm
    N d. Deck seal low water alarm

1203: You are discharging cargo and the inert gas system is in operation to inert the tanks. The pressure in a tank being discharged starts to drop below the allowable limit. What action should you take?

    N a. Cut in another IG fan to increase gas flow.
    N b. Open the pressure control valve until the pressure increases.
    N c. Open the tank isolation valve to the fully open position.
    Y d. Reduce the pumping rate.

1322: How should the lifeboat sea painter be rigged?

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

1417: A vessel is "listed" when it is __________.

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

1483: The SS AMERICAN MARINER is partially loaded with a GM of 3.1 feet and drafts of: FWD 19'-06", AFT 21'-04". Use the white pages of the Stability Data Reference Book to determine what tank(s) you should ballast to increase the GM to 3.7 feet.

    N a. Tanks: DT1
    Y b. Tanks: DB3, DT8
    N c. Tanks: DB2, DB7
    N d. Tanks: DB5

1578: You may not act as person-in-charge of oil transfer operations on more than one vessel at a time __________.

    N a. under any circumstances
    Y b. unless authorized by the Captain of the Port
    N c. unless radio communication is set up between the vessels
    N d. unless the vessels are moored clear of all docks

1596: By regulation, orange smoke distress signals will expire not more than how many months from the date of manufacture?

    N a. 24 months
    N b. 36 months
    Y c. 42 months
    N d. 54 months

1786: Which statement concerning reserve sources of energy for GMDSS is FALSE?

    N a. While the ship is at sea, there must be available at all times a supply of electrical energy sufficient to operate the radio installations and to charge any batteries used as part of a reserve source of energy.
    Y b. Both the VHF and MF/HF installations must be simultaneously supplied.
    N c. A means of ensuring a continuous supply of electrical power must be provided to all GMDSS equipment that could be affected by an interruption in power.
    N d. If a uninterrupted power supply or equivalent is used to supply power to the ship's GPS receiver or other source of positional information, a means must be provided to ensure the continuous supply of the information in the event of a failure to the ship's main or emergency source of power.

1871: If the cause of a sudden severe list is negative initial stability, counterflooding into empty tanks may __________.

    N a. increase the righting moment
    N b. cause an increase in the righting arm
    N c. bring the vessel to an upright equilibrium position
    Y d. cause the vessel to flop to a greater angle

1918: Which equipment is not a source of locating signals?

    N a. EPIRB's that transmit on 406 MHz
    Y b. Survival craft VHF transceivers that provide a beacon on 121.5 MHz
    N c. COSPAS-SARSAT EPIRBs
    N d. SARTs operating on 9 GHz

2015: A shroud is __________.

    N a. a light sail
    N b. a topmast stay
    N c. a sheet
    Y d. standing rigging

2180: You have approximately 16 tons of fish on deck. What will be the shift in the center of gravity after you shift the fish to the fish hold, a vertical distance of 8 feet? (total displacement is 640 tons)

    N a. 0.1 foot
    Y b. 0.2 foot
    N c. 0.3 foot
    N d. 0.4 foot

2280: A vessel displaces 140,000 cubic feet of saltwater in a light condition. After loading 7500 tons of cargo and 200 tons of fuel, water and stores, she is "full and down". The vessel's light displacement is __________.

    N a. 3000 tons
    N b. 3500 tons
    Y c. 4000 tons
    N d. 4500 tons

2527: The SS AMERICAN MARINER is loaded with the cargo shown. Use the white pages of The Stability Data Reference Book to determine the amount of liquid loading required in the double bottom tanks to meet a one compartment standard. ST-0070

    N a. 1171.5 tons
    N b. 1311.0 tons
    Y c. 1503.0 tons
    N d. 1710.5 tons

2534: According to the Chemical Data Guide, which reactive group(s) is/are not compatible with the products polybutene and o-xylene?

    Y a. Nitric acid
    N b. Amides
    N c. Alcohols, glycols
    N d. Phenols, cresols

2774: 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-0080

    N a. Available GM 3.8 ft
    N b. Available GM 3.5 ft
    Y c. Available GM 3.2 ft
    N d. Available GM 2.9 ft

2911: In the event of a fire, the doors to a stair tower must be closed to prevent the spread of fire by __________.

    N a. ventilation
    Y b. convection
    N c. radiation
    N d. conduction

3132: If the water level is rising in the bilge of a survival craft, you should first __________.

    N a. increase the speed of the survival craft
    N b. shift all personnel to the bow
    N c. shift all personnel to the stern
    Y d. check the bilge drain plug

3169: Which license or document enable a person to serve as person in charge of a tank barge which is transferring cargo?

    N a. Operator of Uninspected Towing Vessels
    Y b. Certified Tankerman
    N c. Able Seaman
    N d. Ordinary Seaman/Wiper

3290: On vessels that are required to have fixed carbon dioxide fire extinguishing systems, the controls to operate the system shall be installed in an accessible location __________. (small passenger vessel regulations)

    Y a. outside the space protected
    N b. inside the space protected
    N c. at the carbon dioxide cylinders
    N d. in a padlocked waterproof metal box

3413: With no environmental forces on the DEEP DRILLER, the average of the forward drafts is 59.0 feet, and the average of the aft drafts is 61.0 feet. KGL is 51.13 feet. What is the value of LCG?

    N a. -0.12 foot
    N b. 0.12 foot
    Y c. 2.11 feet
    N d. 2.35 feet

3430: How should the letter "Q" be pronounced when spoken on the radiotelephone?

    N a. QWE BEC
    N b. QUE BACH
    Y c. KEH BECK
    N d. QU UE

3472: If you find an inflatable liferaft container with the steel bands still in place around its case, you should __________.

    N a. tell the Master
    Y b. leave the bands in place
    N c. tell the Mate
    N d. remove the bands yourself

3501: The DEEP DRILLER as currently configured is limited to a maximum water depth of __________.

    N a. 400 feet
    Y b. 600 feet
    N c. 800 feet
    N d. 1,000 feet

3543: The DEEP DRILLER's lightweight is the condition prior to loading __________.

    N a. deck load
    N b. deck load and lower-hull liquids
    N c. deck load, lower-hull liquids, and external loads
    Y d. deck load, lower-hull liquids, external loads, and deploying anchors

4017: Towing vessel fire protection regulations define a "fixed fire-extinguishing system" to include all of the following EXCEPT a _____________ .

    N a. carbon-dioxide system
    Y b. halon system
    N c. manually-operated clean-agent system
    N d. manually-operated water-mist system

4029: Fire protection regulations for towing vessels allow you to use a nonmetallic flexible hose in fuel line installations under all of the following conditions EXCEPT when ___________ .

    N a. used in lengths of not more than 30 inches
    N b. reinforced with wire braid
    N c. visible and easily accessible
    Y d. fitted with Coast Guard approved garden hose fittings

4057: In the DEEP DRILLER, LCG is obtained from the sum of the longitudinal 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

4114: The SS AMERICAN MARINER has the liquid loading shown. Use the white pages of The Stability Data Reference Book to determine the LCG-FP of the liquid load. ST-0155

    N a. 229.8 ft
    Y b. 236.7 ft
    N c. 244.6 ft
    N d. 251.5 ft

4280: Your drafts are: FWD 6'-02", AFT 6'-06". From past experience, you know that the vessel will increase her draft 1 inch for every 5 tons loaded. There is rig water on board and 15 tons of deck cargo. How many more tons of cargo can legally be loaded and still maintain the same trim? (D037DG )

    N a. none
    Y b. 5 tons
    N c. 10 tons
    N d. 20 tons

4485: The COASTAL DRILLER has a trim of 2.13 feet by the stern. The draft in sea water at the forward draft marks is observed to be 8.0 feet. The KMT is __________.

    Y a. 153.73 feet
    N b. 160.42 feet
    N c. 179.41 feet
    N d. 203.97 feet

4716: What is the purpose of tricing pendants?

    N a. They have the same function as frapping lines.
    N b. They are safety lines for personnel inside the lifeboat.
    N c. They slow the descent of the lifeboat.
    Y d. They hold the lifeboat alongside the embarkation deck.

5388: The most likely location for a liquid cargo fire to occur on a tanker would be __________.

    Y a. in the pumproom
    N b. at the vent header
    N c. at the main deck manifold
    N d. the midships house

5418: Small passenger vessels in coastwise service must carry approved __________.

    N a. life floats
    N b. inflatable buoyant apparatus
    N c. inflatable liferafts
    Y d. Any of the above

5577: What is the advantage of a single streamlined fluke anchor over a double fluked anchor of similar weight?

    N a. It has multiple fluke angle settings.
    Y b. It has increased holding power.
    N c. It holds well with either side down.
    N d. It is easier to handle on an anchor boat.

5857: In towing it is desirable for the tug and the MODU to ride wave crests simultaneously because __________.

    Y a. shock loading on the tow line is reduced
    N b. towing speed is improved
    N c. the MODU is more visible from the tug
    N d. the catenary of the tow line is reduced

6197: Fighting a rig fire in the ballast pumproom with hoses would adversely affect the stability of the rig most by __________.

    N a. increasing the permeability of the pumproom
    N b. reduction of drill water from the storage tanks
    Y c. a list caused by water filling the compartment
    N d. a reduced KG caused by water filling the compartment

6213: When patching holes in the hull of a MODU, pillows, bedding, and other soft materials can be used as __________.

    N a. caulking
    Y b. gaskets
    N c. strongbacks
    N d. wedges

6617: On offshore drilling units, sleeping spaces for the regular personnel employed on board may not berth more than __________.

    N a. two persons
    N b. three persons
    Y c. four persons
    N d. five persons

6621: Locations on a MODU where flammable hydrocarbon gas or vapors may accumulate due to drilling operations are defined as __________.

    N a. gaseous locations
    N b. hazardous locations
    Y c. classified locations
    N d. designated locations

6653: Diesel powered industrial trucks on a MODU that are provided with safeguards to the exhaust, fuel, and electrical systems are designated __________.

    N a. DEFE
    N b. DE
    Y c. DS
    N d. DES

7067: An effective method for moving patients with spinal injuries onto a spine board is known as the __________.

    N a. pack-strap carry
    N b. two man extremities carry
    N c. fireman's drag
    Y d. four man log roll

7127: Spaces protected by a fixed CO2 system must be equipped with an alarm which sounds __________.

    N a. for the first 20 seconds CO2 is being released into the space
    Y b. for at least 20 seconds prior to release of CO2
    N c. during the entire period that CO2 is being released
    N d. if all doors and ventilation are not secured

7375: When a semisubmersible rig under tow veers from side to side on its tow line, the best way of controlling the action is to __________.

    N a. trim by the bow
    Y b. trim by the stern
    N c. play out stern anchor chain
    N d. adjust the length of the towing bridle

9581: The C02 flooding system is actuated by a sequence of steps which are __________.

    Y a. break glass, pull valve, break glass, pull cylinder control
    N b. sound evacuation alarm, pull handle
    N c. open bypass valve, break glass, pull handle
    N d. open stop valve, open control valve, trip alarm

9603: During the passage of a severe storm the maximum vertical moments, including free surface moments, permitted on the DEEP DRILLER at survival draft is __________.

    N a. 998,942 ft-tons
    Y b. 996,522 ft-tons
    N c. 990,430 ft-tons
    N d. 889,555 ft-tons