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.


84: After using a C02 portable extinguisher, it should be __________.


218: A compound fracture is a fracture in which __________.


456: On a vessel of 900 GT, the minimum number of fire axes required is __________.


527: The VHF radiotelephone frequency designated to be used only to transmit or receive information pertaining to the safe navigation of a vessel is __________.

    N a. 156.8 MHz (channel 16)
    N b. 156.7 MHz (channel 14)
    Y c. 156.65 MHz (channel 13)
    N d. 156.6 MHz (channel 12)

557: Under the "Vessel Bridge-to-Bridge Radiotelephone Act" the frequency for bridge-to-bridge communications is 156.65 MHz or channel __________.

    N a. 12
    Y b. 13
    N c. 14
    N d. 16

597: The "Vessel Bridge-to-Bridge Radiotelephone Act" applies to __________.

    N a. every towing vessel of 16 feet or over in length while navigating
    N b. every vessel of 50 GT and upward, carrying one or more persons for hire
    N c. all aircraft operating on the water
    Y d. every power-driven vessel of 20 meters and upward while navigating

761: Which when removed, will result in the extinguishment of a fire?

    Y a. Oxygen
    N b. Carbon dioxide
    N c. Sodium
    N d. Nitrogen

802: A portable dry chemical fire extinguisher discharges by __________.

    N a. gravity when the extinguisher is turned upside down
    Y b. pressure from a small CO2 cartridge on the extinguisher
    N c. air pressure from the hand pump attached to the extinguisher
    N d. pressure from the reaction when water is mixed with the chemical

871: The bilge pump on a fishing vessel __________.

    Y a. must be fixed if the vessel exceeds 12 meters in length
    N b. may be used as a fire pump
    N c. must be portable if there are more than 4 watertight compartments
    N d. must be capable of pumping at least 450 gpm

948: Fires in combustible metals, such as sodium or magnesium, are classified as class __________.

    N a. A
    N b. B
    N c. C
    Y d. D

981: Oily rags stored in a pile that is open to the atmosphere are a hazard because they may __________.

    N a. deteriorate and give off noxious gasses
    Y b. spontaneously heat and catch fire
    N c. attract lice and other vermin and serve as a breeding ground
    N d. None of the above

1055: The signal K4 sent by any method means __________.

    N a. a distance of 4 miles
    N b. a speed of 4 knots
    N c. the wind is from the south
    Y d. "I wish to communicate with you by sound signals"

1282: When approaching a fire from leeward you should shield fire fighters from the fire by using __________.

    N a. a straight stream of water
    N b. foam spray
    Y c. high-velocity fog
    N d. low-velocity fog

1514: "Thermal protective aids" are required for what percentage of the persons a survival craft is equipped to carry?

    Y a. 10%
    N b. 50%
    N c. 75%
    N d. 100%

1535: Limit switches __________.

    N a. control the descent rate of a lifeboat
    N b. control the ascent rate of a lifeboat
    Y c. cut off power to the winch when the lifeboat nears the final stowed position
    N d. cut off power to the winch when the lifeboat reaches the davit bumpers

1538: Your oceangoing vessel is required to have a waste management plan. This plan must be in writing and describe procedures for __________.

    Y a. collecting and discharging garbage
    N b. disposing waste from marine sanitation devices
    N c. reducing the amount of shipboard waste
    N d. segregating the different types of shipboard waste

1542: The SS AMERICAN MARINER has the following drafts: FWD 09'-10", AFT 15'-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-0041

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

1579: During oil transfer operations, who is responsible for ensuring that the posted transfer procedures are followed?

    Y a. The designated person in charge
    N b. The tankerman
    N c. The senior able seaman
    N d. The oiler

1722: Where are remote readouts for oxygen concentration, pressure, and temperature of an inert gas system required to be located?

    N a. Bridge and engine control consoles
    N b. Bridge and tank(s) being inerted
    N c. Main deck and engine control consoles
    Y d. Cargo control and engine control consoles

1795: Where can GMDSS regulations pertaining specifically to U.S.-flag vessels be found?

    N a. These are located in CCIR #476.
    N b. These are located in FCC Part 83.
    N c. These are published only by the U.S. Coast Guard.
    Y d. These are located in 47 CFR Part 80.

2156: The flammable limits of gasoline are 1.3 to 7.6 percent volume of the air. You are testing a tank that contained gasoline by using a combustible gas indicator. Under testing, the tank sample registered 55 on the instrument's dial. What is the concentration of flammable gases?

    Y a. 0.7%
    N b. 4.1%
    N c. 5.5%
    N d. 55%

2259: Use the material in Section 1, the blue pages, of the Stability Data Reference Book. If the KG is 24.2 feet, and the drafts are: FWD 22'-04", AFT 23'-00"; at what angle will the vessel lose positive stability?

    N a. 72°
    Y b. 78°
    N c. 86°
    N d. 92°

2268: To what chemical family does chlorallylene belong?

    N a. Alcohols
    N b. Esters
    N c. Glycol ethers
    Y d. Substituted allyl

2341: 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-0060

    N a. Available GM 5.26 ft
    Y b. Available GM 4.24 ft
    N c. Available GM 4.11 ft
    N d. Available GM 4.01 ft

2456: According to the Chemical Data Guide, epichlorohydrin is a(n) __________.

    N a. corrosive
    Y b. class B poison
    N c. oxidizer
    N d. explosive

2468: What is NOT classified as a flammable liquid?

    N a. Methyl alcohol
    N b. Heptane
    Y c. Mineral spirits
    N d. iso-Hexane

2622: Liquefied flammable gas is defined as any flammable gas having a Reid vapor pressure exceeding how many pounds?

    N a. 14
    N b. 30
    Y c. 40
    N d. 50

2663: Lighter longitudinal stiffening frames on the MODU side plating are called __________.

    Y a. stringers
    N b. side frames
    N c. side stiffeners
    N d. intercostals

2664: Gasoline fumes tend to __________.

    Y a. settle near the bottom of the bilge
    N b. settle near the top of the bilge
    N c. settle evenly throughout all levels of the bilge by mixing with air
    N d. disperse to atmosphere

2687: As a vessel changes course to starboard, the compass card in a magnetic compass __________.

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

2688: The vapor pressure of a gas is the pressure necessary to keep it in a(n) __________.

    N a. soluble state
    N b. solid state
    Y c. liquefied state
    N d. inert state

2719: Your vessel's drafts are: FWD 14'-04", AFT 17'-08". The LCG of the forepeak is 200 feet forward of amidships. How many tons of ballast must be pumped into the forepeak in order to have a drag of 2 feet? (Use the reference material in Section 1, the blue pages, of the Stability Data Reference Book)

    N a. 62 tons
    N b. 65 tons
    N c. 72 tons
    Y d. 75 tons

2871: As shown, the symbol 3 represents __________. (D041DG )

    N a. displacement
    Y b. amidships
    N c. forward perpendicular
    N d. baseline

3030: The SS AMERICAN MARINER has the liquid loading shown. Use the white pages of The Stability Data Reference Book to determine the KG of the liquid load. ST-0097

    N a. 7.7 feet
    N b. 9.1 feet
    N c. 9.9 feet
    Y d. 10.6 feet

3040: A vessel's drafts are: FWD 19'-00", AFT 21'-10". 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)

    Y a. 4819 tons
    N b. 4982 tons
    N c. 5012 tons
    N d. 5099 tons

3100: Portable fire extinguishers must be provided for the cargo tank area of an unmanned tank barge __________.

    N a. only when fully loaded
    N b. if one or more tanks are full
    Y c. when transferring cargo
    N d. only when the barge is being towed

3181: Repairing damage to the hull of a MODU at or above the waterline reduces the threat of __________.

    N a. free surface effects
    N b. capsizing the MODU
    Y c. continued progressive flooding
    N d. wind overturning moments

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

3402: A vessel is signaling to you by flag hoist, and the answer pennant is hoisted close-up. You should __________.

    N a. hoist flag "C"
    N b. wait for further signals after a short delay
    N c. hoist flag "R"
    Y d. expect no further flag hoists

3459: Using the Guidance Manual for Loading M.V. Grand Haven, determine the amount of ballast required in tank No.1 (P&S) to maintain drafts of 17'-00" forward and 22'-06" aft for a vessel loaded with grain which has a test weight of 39.5 lbs.

    N a. 155 tons each
    Y b. 170 tons each
    N c. 190 tons each
    N d. 200 tons each

3495: The SS AMERICAN MARINER arrived in port with drafts of: FWD 17'-10", AFT 19'-06". 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-0134

    N a. FWD 16'-10", AFT 21'-02"
    N b. FWD 17'-00", AFT 21'-00"
    N c. FWD 17'-02", AFT 20'-10"
    Y d. FWD 17'-04", AFT 20'-08"

3535: The marine riser on the DEEP DRILLER should be disconnected if it appears the ball joint angle will exceed 10° or the mooring line tensions will exceed __________.

    N a. 348 kips
    N b. 500 kips
    Y c. 522 kips
    N d. 600 kips

3626: When personnel are lifted by a helicopter from an inflatable liferaft, the personnel on the raft should __________.

    Y a. deflate the floor of the raft to reduce the danger of capsizing
    N b. inflate the floor of the raft to provide for additional stability
    N c. remove their lifejackets to prepare for the transfer
    N d. take in the sea anchor to prevent fouling of the rescue sling

3826: You have abandoned ship and are in charge of a liferaft or survival craft. How much water per day should you permit each person to have after the first 24 hours?

    N a. 1 can
    Y b. 1 pint
    N c. 1 quart
    N d. 1 gallon

4060: After an item of required safety equipment on a towing vessel fails, the owner or Master must consider all of these factors before continuing the voyage, EXCEPT the ___________ .

    N a. weather conditions, including visibility
    Y b. estimated time of arrival promised to the customer
    N c. safety of the vessel, considering the other traffic in the area
    N d. dictates of good seamanship

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

4303: During a long ocean tow of a jack-up the clearance in the upper guide should be reduced to zero to restrain the leg and eliminate the impact loads from dynamic responses. This is best done by __________.

    N a. lowering the spud cans below the hull
    N b. raising the spud cans into hull recesses
    Y c. tapering the upper guides and building up the teeth
    N d. remove certain lengths of leg

4501: The COASTAL DRILLER is in transit at a draft of 10.0 feet. It loads 216.43 kips of weight aboard. What is the new draft?

    N a. 10.2 feet
    Y b. 10 feet 2 inches
    N c. 10 feet 3 inches
    N d. 10 feet 4 inches

4615: On the machinery deck of the COASTAL DRILLER, each watertight compartment has at least one sump valve that can be remotely operated from the __________.

    N a. OIM's quarters
    N b. OIM's office
    N c. control house
    Y d. bilge pit

5725: Given the same water depth and line tension, the catenary length of a 90 pound/foot mooring chain in comparison to the catenary length of a 19 pound/foot wire rope mooring line will be __________.

    N a. longer
    N b. identical
    Y c. shorter
    N d. indeterminable

5763: What is the purpose of a chain stopper?

    N a. Stops the chain during pay out
    Y b. Secures the chain after is has been stopped
    N c. Stops off a 6 foot section for inspection
    N d. Hydraulically cuts anchor chain

6065: A fire pump on a MODU requires 175 psi discharge pressure to maintain the required 50 psi pitot tube pressure at the two highest hydrants. The maximum setting for the relief valve is __________.

    N a. 125 psi
    N b. 175 psi
    Y c. 200 psi
    N d. 225 psi

6604: Fusible-link fire dampers are operated by __________.

    Y a. the heat of a fire melting the link
    N b. a break-glass and pull-cable system
    N c. electrical controls on the bridge
    N d. a mechanical arm outside the vent duct

6715: The person in charge shall insure that each lifeboat on a MODU is lowered to the water, launched, and operated at least once every __________.

    N a. month
    N b. 2 months
    Y c. 3 months
    N d. 6 months

7035: If a diabetic suffers an insulin reaction and is conscious, he should be given __________.

    N a. soda crackers and water
    Y b. orange juice
    N c. an ounce of whiskey
    N d. a glass of milk

8213: What fitting should you install in the rig piping to a pump to facilitate disconnecting the pump for servicing?

    N a. Coupling
    Y b. Union
    N c. Flange
    N d. Nipple

8421: If an engine shuts down due to high jacket water temperature, what action should be taken?

    N a. Open crankcase explosion covers
    Y b. Allow engine to cool gradually
    N c. Slowly add cool water to the expansion tank
    N d. Back flush the cooling water system

8855: The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). If weather conditions make it necessary to ballast down to survival, how much ballast would be required?

    N a. 3,998.3 long tons
    Y b. 4,086.5 long tons
    N c. 4,188.0 long tons
    N d. 5,087.0 long tons

8891: Which type of respiratory protection is preferable for repair/investigation personnel on a MODU in a hydrogen sulfide (H2S) environment?

    N a. U.S. Navy Oxygen Breathing Apparatus (OBA)
    N b. Emergency Escape Breathing Apparatus (EEBA)
    N c. Demand Self-Contained Breathing Apparatus (SCBA)
    Y d. Pressure-Demand Self-Contained Breathing Apparatus (SCBA)

9614: The normal designed CO2 storage tank temperature and pressure associated with a ship's low-pressure CO2 fixed fire extinguishing system is approximately __________.

    N a. 0°F at 50 PSI
    N b. 70°F at 150 PSI
    Y c. 0°F at 300 PSI
    N d. 70°Fat 500 PSI