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.


87: Which type of portable lighting may be used to enter a compartment on a tank barge which is NOT gas-free?


94: If you desired to communicate with another station that your navigation lights were not functioning, you would send __________.


185: Which substance is NOT considered to be "Oil" under the pollution prevention regulations?


354: The distress message of a ship should include considerable information which might facilitate the rescue. This information should __________.

    N a. ALWAYS be included in the initial distress message
    N b. be sent to a Coast Guard station FIRST
    Y c. be transmitted as a series of short messages, if time allows
    N d. include the vessel's draft

378: The FIRST treatment for a surface burn is to __________.

    N a. wash the burned area with a warm soap and water solution
    Y b. flood, bathe, or immerse the burned area in cold water
    N c. cover the burned area with talcum powder and bandage it tightly
    N d. leave the burned area exposed to the atmosphere

431: The SS AMERICAN MARINER arrived in port with drafts of: FWD 28'-04", AFT 31'-10". 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-0007

    N a. FWD 29'-01", AFT 31'-04"
    N b. FWD 29'-05", AFT 31'-00"
    Y c. FWD 29'-08", AFT 30'-09"
    N d. FWD 29'-11", AFT 30'-07"

485: Cargo hose carried on tank vessels must be designed to withstand the pressure of the shutoff head of the cargo pump or pump relief valve setting, but in no case should it be less than __________.

    N a. 100 psi
    Y b. 150 psi
    N c. 200 psi
    N d. 250 psi

498: An unconscious person should NOT be __________.

    N a. placed in a position with the head lower than the body
    N b. given an inhalation stimulant
    Y c. given something to drink
    N d. treated for injuries until conscious

588: At night while the ship is tied up to the dock, a fire breaks out in a cargo hatch. After sounding the alarm, what should the person on watch do?

    N a. Begin fighting the fire immediately.
    N b. Await further orders from the Master.
    N c. Let go the lines to let the vessel drift to an anchorage.
    Y d. Send a person to summon the shore authorities.

724: Messages concerning weather conditions transmitted by radiotelephone are preceded by __________.

    N a. MAYDAY
    N b. PAN-PAN
    Y c. SECURITE
    N d. SOS

953: You are at sea on a vessel that has a beam of 50 feet, and you calculate the period of roll to be 22 seconds. What is the vessel's metacentric height?

    N a. 0.8 ft
    Y b. 1.0 ft
    N c. 1.2 ft
    N d. 1.4 ft

1016: What is the maximum length of time that distress flares are approved for?

    N a. 1 and 1/2 years
    N b. 2 years
    Y c. 3 and 1/2 years
    N d. 5 years

1105: In launching a lifeboat, when should the tricing pendants be released?

    N a. Before the boat is lowered from the stowage position
    N b. As soon as the boat-fall blocks clear the davit head
    N c. After the limit switch is activated
    Y d. After all people have been embarked

1134: On board small passenger vessels, ducts for compartments which contain gasoline powered machinery or gasoline storage tanks __________.

    N a. must not allow any appreciable vapor flow except through their normal openings
    N b. must be of rigid, permanent construction
    N c. must lead as directly as possible and be properly fastened and supported
    Y d. All of the above

1147: In addition to a portable hand-operated bilge pump, a 55 foot long ferry must have a fixed power operated bilge pump capable of pumping at least __________.

    N a. 5 GPM
    N b. 10 GPM
    Y c. 25 GPM
    N d. 50 GPM

1157: When using the combustible gas indicator, a special filter for filtering the incoming sample must be used if the atmosphere being tested contains vapors of __________.

    N a. sour crude
    Y b. leaded gasoline
    N c. CO2
    N d. chlorine

1188: The most effective way to apply a foam stream if the fire is on deck or is a running fire, is to direct the stream __________.

    N a. onto the surface of the burning liquid
    Y b. ahead of the burning liquid and bounce it on the fire
    N c. at the base of the burning liquid in a sweeping motion
    N d. just above the surface of the burning liquid

1237: Portable-foam fire extinguishers are designed for use on what classes of fires?

    Y a. A and B
    N b. A and C
    N c. B and C
    N d. A, B, and C

1270: The most common type of davit found on merchant vessels today is the __________.

    N a. radial
    N b. sheath-screw
    Y c. gravity
    N d. quadrantal

1332: An important step in fighting any electrical fire is to __________.

    N a. stop ventilation
    N b. stop the vessel
    Y c. de-energize the circuit
    N d. apply water to extinguish the fire

1453: The hoods over galley ranges present what major hazard?

    Y a. Grease collects in the duct and filter and if it catches fire is difficult to extinguish.
    N b. In order to effectively draw off cooking heat they present a head-injury hazard to a person of average or more height.
    N c. They inhibit the effective operation of fire fighting systems in combating deep fat fryer or range fires.
    N d. They concentrate the heat of cooking and may raise surrounding flammable material to the ignition point.

1500: 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-0040

    N a. Available GM 6.9 ft
    N b. Available GM 5.3 ft
    Y c. Available GM 4.1 ft
    N d. Available GM 3.8 ft

1543: The ship station license for your radiotelephone is valid for __________.

    N a. one year
    N b. two years
    Y c. ten years
    N d. the life of the vessel

1660: If the meter needle of the oxygen indicator cannot be set to zero, what should be done?

    Y a. Replace the batteries.
    N b. Check the sampling tube for blockage.
    N c. Adjust the final reading by the amount the needle is displaced from zero.
    N d. Replace the platinum filament.

1819: Your vessel displaces 968 tons and measures 158'L x 40'B. You ship a large wave on the after deck. What is the reduction to GM due to free surface before the water drains overboard, if the after deck measures 65'L x 40'B and the weight of the water is 80 tons?

    N a. 9.14 feet
    Y b. 9.45 feet
    N c. 9.68 feet
    N d. 9.87 feet

1930: You must ensure that lifesaving equipment is __________.

    N a. locked up
    Y b. readily accessible for use
    N c. inaccessible to passengers
    N d. on the topmost deck of the vessel at all times

1992: A deep keel on a sailing vessel increases the_____________.

    Y a. resistance to lateral movement
    N b. length-depth ratio resulting in a faster hull design
    N c. height of the center of gravity above the hull resulting in a more stable vessel
    N d. mast height to compensate for increased lateral resistance

2122: Your drafts are: FWD 6'-00", AFT 6'-06". From past experience, you know that the vessel will increase her draft 1 inch for every 6 tons loaded. There is rig water on board and 17 tons of deck cargo. How many more tons of cargo can be loaded and still maintain the same trim? (D037DG )

    N a. 14 tons
    Y b. 18 tons
    N c. 24 tons
    N d. 33 tons

2250: Which cargo is considered volatile?

    N a. Bunker C
    N b. Turkey-red oil
    N c. Sweet oil
    Y d. iso-Propylamine

2266: Which fire extinguishing agent can NOT be used on an ethylenediamine?

    Y a. Water foam
    N b. Dry chemical powder
    N c. Water fog
    N d. Alcohol foam

2296: Regulations require that cargo pumps in tank vessels carrying grade D liquid cargo shall be isolated from sources of vapor ignition by __________.

    N a. cofferdams
    Y b. gastight bulkheads
    N c. passageways or living quarters
    N d. general cargo spaces

2347: Which references should the GMDSS radio operator consult for information on the proper operation of the equipment?

    N a. ITU list of Equipment Operations
    Y b. The manufacturer's operating manuals
    N c. 47 CFR Part 80
    N d. Information available through SafetyNET channels

2387: A magnetic compass card is marked in how many degrees?

    N a. 90
    N b. 180
    Y c. 360
    N d. 400

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

2466: According to regulations, access to a cargo pumproom in a tank vessel carrying grades C or D liquid cargo shall be __________.

    N a. from areas equipped with power ventilation
    N b. only from enclosed areas free from sources of vapor ignition
    Y c. from the open deck
    N d. from within the vessel

2497: In MODU drilling operations, the term tripping means __________.

    N a. releasing the tongs from the drill pipe
    N b. welding hard metal to tool joints
    Y c. hoisting drill pipe out of and returning it to the wellbore
    N d. sliding a joint of drill pipe down to the pipe rack ramp

2667: Shipboard Oil Pollution Emergency Plans must be reviewed __________.

    N a. annually by the owner, with a letter submitted six months before expiration
    N b. only once every five years, with a letter submitted six months before expiration
    N c. and the entire plan resubmitted for approval once every five years, six months before expiration
    Y d. annually by the owner, with a letter submitted to the Coast Guard within one month of the anniversary date of the plan approval

2679: The primary hazard of liquefied petroleum gas and liquefied natural gas is __________.

    N a. pressure
    N b. toxicity
    N c. temperature
    Y d. flammability

2776: The lubber's line of a magnetic compass __________.

    N a. always shows true north direction
    Y b. indicates the vessel's heading
    N c. is always parallel to the vessel's transom
    N d. is located on the compass card

2987: For a MODU with trim, a decrease in GMT will cause the angle of inclination to __________.

    Y a. increase
    N b. decrease
    N c. remain constant
    N d. stabilize at an angle of loll

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°

3172: Your vessel has a gasoline engine and a mechanical exhaust ventilation system. BEFORE starting the engine, the exhaust blower should be run long enough to __________.

    N a. warm up the exhaust blower motor
    N b. provide a proper supply of fresh air for the engine(s)
    N c. see the system is in good operating condition
    Y d. insure at least one complete change of air in the compartments concerned

3325: A semisubmersible, with a TCG of 0.5 feet to port, displaces 20,000 long tons. Bulk, weighing 400 long tons, is discharged from P-tanks located 50 feet starboard of the centerline. What is the new TCG?

    N a. 1.03 feet starboard of centerline
    N b. 0.53 foot starboard of centerline
    N c. 0.53 foot port of centerline
    Y d. 1.53 feet port of centerline

3347: The DEEP DRILLER is level at a draft of 60 feet in calm water. What is the value of the righting moment?

    N a. 18,118 foot-tons
    N b. 9,059 foot-tons
    N c. 4,529 foot-tons
    Y d. 0 foot-tons

3456: When a sea anchor for a survival craft is properly rigged, it will __________.

    N a. completely stop the survival craft from drifting
    Y b. help to prevent broaching
    N c. prevent the survival craft from pitching
    N d. prevent the survival craft from rolling

4150: In an emergency, the electro-hydraulic steering units can be directly controlled by the __________.

    Y a. trick wheel
    N b. rapson slide
    N c. follow-up gear
    N d. receiver unit

4771: The COASTAL DRILLER is loaded as shown in the Sample Load Form #1 (Rig Move). If the entire contents of bulk tanks #2 and #3 are back-loaded to an offshore supply vessel, what would be the new draft?

    N a. 11.04 feet
    N b. 10.88 feet
    Y c. 10.72 feet
    N d. 9.02 feet

5061: During a move to a new location, a jack-up drilling unit with personnel on board is towed through a heavy rainstorm. What signal must be sounded by the drilling rig when visibility is restricted?

    N a. One prolonged blast
    N b. Two prolonged blasts
    N c. One prolonged and two short blasts
    Y d. One prolonged and three short blasts

5433: It is vital to the safety of the elevated COASTAL DRILLER that the hull be kept above __________.

    N a. the charted water depth
    N b. the charted water depth plus tidal corrections
    N c. the still water level
    Y d. wave action

5535: What effect is achieved from soaking an anchor?

    Y a. It allows the bottom soil to consolidate.
    N b. It gives the palms time to trip the anchor.
    N c. It stabilizes the mooring system.
    N d. It lubricates the anchor for better tripping.

5623: The full period of motion of the DEEP DRILLER while tripping is 10 seconds and the maximum pitch angle as seen on the inclinometers is 8 degrees. From the standpoint of critical motion, the motion is __________.

    N a. unsatisfactory, place setback in the pipe racks
    N b. satisfactory, continue tripping
    Y c. unsatisfactory, deballast to survival draft
    N d. satisfactory, place unit in standby

5647: On a semisubmersible drilling unit, increasing riser tension increases __________.

    Y a. KG
    N b. GM
    N c. KM
    N d. free surface moments

6133: What equipment is included in the fireman's outfit?

    N a. Chemical protection face shield
    N b. Approved work vest
    Y c. Self contained breathing apparatus
    N d. Marlinspike

6523: On the cargo manifest, the total weight of a box containing cargo is the __________.

    N a. tare weight
    N b. net weight
    Y c. gross weight
    N d. cargo weight

6795: Mobile offshore drilling units not required to have an official logbook shall __________.

    N a. maintain a logbook on Form CG-706
    N b. not be required to maintain a logbook
    Y c. maintain an unofficial logbook
    N d. report only major events to the OCMI

7046: A fire has broken out on the stern of your vessel. You should maneuver your vessel so the wind __________.

    N a. blows the fire back toward the vessel
    N b. comes over either beam
    N c. comes over the stern
    Y d. comes over the bow

7325: One method of reducing the length of radio transmissions without distorting the meaning of your words is by using __________.

    N a. slang
    N b. secret codes
    Y c. procedure words
    N d. analogies

8223: What is the purpose of a check valve?

    N a. Passes air but not liquid
    N b. Regulates liquid flow
    Y c. Permits flow in one direction only
    N d. Passes liquid but not air

8623: What is the new location of the transverse center of gravity if 200 short tons are placed 10 feet to port of the centerline on a MODU with TCG 0.7 foot starboard of the centerline, and displacement 9,000 short tons?

    Y a. 0.47 foot starboard of centerline
    N b. 0.40 foot starboard of centerline
    N c. 0.23 foot port of centerline
    N d. 0.20 foot port of centerline

9547: A neutral equilibrium position for a vessel means that the metacenter is __________.

    N a. lower than the keel
    Y b. at the same height as the center of gravity
    N c. exactly at midships
    N d. at the center of the waterplane area