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.


207: Which chemical is used to treat water in order to ensure its safety for drinking?


231: The Coast Guard inspection required before a Certificate of Inspection can be issued is conducted________________.


258: In any major injury to a person, first aid includes the treatment for the injury and __________.


316: The space containing the cylinders for the carbon dioxide(CO2) fire extinguishing system must be designed to preclude an anticipated ambient temperature over __________.

    N a. 80°F
    N b. 95°F
    Y c. 130°F
    N d. 150°F

398: For small, first-degree burns the quickest method to relieve pain is to __________.

    Y a. immerse the burn in cold water
    N b. administer aspirin
    N c. apply petroleum jelly
    N d. apply a bandage to exclude air

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

507: While underway, if you are required to have a radiotelephone, you must maintain a continuous listening watch on channel __________.

    N a. 6 (156.3 MHz)
    N b. 12 (156.6 MHz)
    N c. 14 (156.7 MHz)
    Y d. 16 (156.8 MHz)

839: A small passenger vessel's Official Number must be marked___________.

    N a. in block type Arabic numerals not less than 1-1/2 inch high
    Y b. or mounted so its alteration, removal, or replacement would be obvious
    N c. on some clearly visible exterior structural hull part
    N d. All of the above

864: A crew member suddenly becomes blind in both eyes. Which code should your message contain?

    N a. MNJ
    N b. MNM
    Y c. MNO
    N d. MNI

872: The safety discs on carbon dioxide cylinders are set to release at 2,700 psi. Under normal circumstances this pressure will be reached at a temperature of __________.

    N a. 70°F
    N b. 100°F
    N c. 125°F
    Y d. 135°F

1075: Prior to lowering the lifeboat, the most important item to check is the __________.

    N a. oars
    N b. sail
    Y c. boat plug
    N d. life preservers

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

1132: According to 46 CFR Subchapter T, how long should exhaust blowers be operated in enclosed spaces containing gasoline powered machinery before starting the engine?

    N a. For at least four to five minutes
    N b. Long enough to achieve a minimum of two complete air changes
    Y c. Long enough to achieve at least one complete change of air
    N d. No fixed amount, but the blower should run until you don't smell any gas

1202: Which is the most accurate instrument for measuring the amount of oxygen in the atmosphere of a confined space?

    N a. Combustible gas indicator
    Y b. Oxygen indicator
    N c. Flame safety lamp
    N d. All of the above

1334: An inflatable liferaft should be manually released from its cradle by __________.

    N a. cutting the straps that enclose the container
    N b. removing the rubber sealing strip from the container
    N c. loosening the turnbuckle on the securing strap
    Y d. pushing the button on the hydrostatic release

1354: If the hydrostatic release mechanism for an inflatable liferaft is not periodically serviced and becomes inoperative, it will NOT __________.

    N a. set the water lights on immersion
    N b. release the dye-marker from the liferaft
    Y c. free the liferaft from a sinking vessel
    N d. break the seal on the carbon dioxide cylinder

1400: In rough weather, when a ship is able to maneuver, it is best to launch a lifeboat __________.

    Y a. on the lee side
    N b. on the windward side
    N c. with the wind dead ahead
    N d. with the wind from astern

1436: Your vessel's draft is 16'-00" fwd. and 18'-00" aft. The MT1 is 500 ft-tons. How many tons of water must be shifted from the after peak to the forepeak, a distance of 250 feet, to bring her to an even draft forward and aft?

    N a. 52 tons
    N b. 50 tons
    Y c. 48 tons
    N d. 24 tons

1560: The most important reason for taking anti-seasickness pills as soon as possible after entering a liferaft is to __________.

    N a. assist in sleeping
    N b. reduce appetite by decreasing nausea
    Y c. prevent loss of body moisture by vomiting
    N d. prevent impaired judgment due to motion-induced deliriousness

1882: A sailing vessel with the wind coming from 260° relative would be __________.

    N a. on a close reach
    Y b. on a broad reach
    N c. on a starboard tack
    N d. running before the wind

2002: You have 420 tons of below deck tonnage and 150 tons of above deck cargo on board. You must load 135 tons of liquid mud below deck. How much more deck cargo can you load? (See the trim and stability letter for M.V. Hudson, illustration D036DG.) (D036DG )

    Y a. 90 tons
    N b. 140 tons
    N c. 155 tons
    N d. 240 tons

2088: If the OCMI has NOT granted an extension, free-fall lifeboats must be lowered into the water and launched with the assigned crew at least once every __________.

    N a. 3 months
    Y b. 6 months
    N c. year
    N d. 2 years

2207: You are keeping the required garbage disposal records. The amount of garbage disposed must be stated in __________.

    N a. both cubic meters and cubic feet
    Y b. cubic meters
    N c. both kilos and pounds
    N d. barrels of 55 gallon capacity

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

2328: Which of the flash points would indicate a grade D combustible liquid?

    N a. 65°F
    Y b. 87°F
    N c. 155°F
    N d. 160°F

2335: What is required in addition to the heat, fuel, and oxygen of the fire triangle to have a fire?

    Y a. Chain reaction
    N b. Electricity
    N c. Pressure
    N d. Smoke

2403: A frame with two, or sometimes four, arms through which are threaded the guidelines and which is used to keep the drill stem and bit in line with the center opening in the temporary guide base is the __________.

    N a. drill stem guide
    Y b. guide frame
    N c. drill string frame
    N d. casing guide

2580: If your JP-5 barge has operated in saltwater for less than 1 month in the 12 month period since it was last dry-docked, when is it required to be hauled out again?

    Y a. 60 months since last dry-docking
    N b. 36 months since last dry-docking
    N c. 24 months since last dry-docking
    N d. 12 months since last dry-docking

2592: Which signal is detected as originating from a SART?

    N a. The Morse code distress series S-O-S repeated 3 times followed by DE and the vessel's call sign
    Y b. A line of blip code on a radar screen outward from the SART's position along its line of bearing
    N c. A line of blip code on a radar screen inward from the SART's position to its own ship along its line of bearing
    N d. None of these

2644: When working on a tow, a good safety precaution is to __________.

    N a. carry loads on your inside shoulder when walking along the outside of a barge
    N b. tighten ratchets outboard
    N c. walk on the top of covered barges when possible to avoid narrow gunwales
    Y d. always remove the toothpick after tightening the ratchet

2711: The number of able seamen required on a MODU is stated in the __________.

    N a. American Bureau of Shipping code
    N b. Department of Energy regulations
    N c. Mineral Management Service rules
    Y d. Certificate of Inspection

2796: On small passenger vessels cooking and heating equipment __________.

    N a. shall be suitable for marine use
    N b. may use liquefied petroleum gas
    N c. cannot use gasoline
    Y d. All of the above

2884: The sailing drafts are: FWD 23'-02", AFT 24'-06" and the GM is 2.8 feet. Use the information in Section 1, the blue pages, of the Stability Data Reference Book to determine the available righting arm at 30° inclination.

    N a. 1.3 feet
    Y b. 2.5 feet
    N c. 3.2 feet
    N d. 3.7 feet

3376: Outlets in gasoline fuel lines are _____________,

    N a. permitted for drawing fuel samples
    N b. permitted for draining fuel from lines
    N c. permitted for bleeding air from lines
    Y d. prohibited

3431: The DEEP DRILLER, at a draft of 60 feet, has a KGL of 55.4 feet and an LCG of 2.37 feet. What is the trim in feet?

    N a. 2.0 feet by the head
    Y b. 4.0 feet by the head
    N c. 4.0 feet by the stern
    N d. 8.0 feet by the stern

3572: Your vessel's existing draft is FWD 25'-04", AFT 24'-08". Using the Guidance Manual for Loading M.V. GRAND HAVEN, determine the new draft if 634 long tons are discharged from NO. 19 hatch.

    N a. FWD 25'-00 1/4", AFT 25'-04 1/8"
    N b. FWD 25'-02 3/4", AFT 23'-08 5/8"
    Y c. FWD 25'-05 1/4", AFT 23'-08 5/8"
    N d. FWD 25'-10 1/4", AFT 23'-11 3/4"

3727: The DEEP DRILLER is engaged in wire line logging. You have 10,000 feet of drill pipe and bottom hole assembly in the set back. Marine weather forecasts are predicting weather with winds in excess of 70 knots. Your first step to prepare for the storm should be to __________.

    Y a. suspend wire line operations and run the drill string into the hole
    N b. continue wire line operations and bring the rig to a 45 foot draft
    N c. suspend wire line operations and dump your mud pits overboard
    N d. increase tension on all anchor chains to minimize movement of the rig

4138: Multiple fire pumps may be used for other purposes provided that one pump is __________.

    N a. on line to the fire main
    Y b. kept available for use on the fire main at all times
    N c. capable of being connected to the fire main
    N d. rated at or above 125 psi

4165: The DEEP DRILLER is loaded as shown in the Sample Load Form #3 (Preparing to Drill). If all the liquid mud (see table 8) is dumped, what would be the new height of the transverse metacenter?

    N a. 61.19 feet
    N b. 62.80 feet
    N c. 62.99 feet
    Y d. 62.94 feet

4337: The COASTAL DRILLER, following discharge of preload, should __________.

    N a. leave dump valves open
    Y b. close all dump valves
    N c. remove dump valves
    N d. replace dump valves

4415: While in ocean transit, the COASTAL DRILLER has a roll period of 9 seconds. What is the largest angle each side of vertical that does not exceed the design limits of the legs in good weather?

    N a. 14°
    N b. 11°
    N c. 9°
    Y d. 7°

4593: The COASTAL DRILLER, while drilling, has a total weight of 15,400 kips. The LCG is 120.00 feet AF0, and the TCG is -0.5 feet to port of the centerline. What is the port leg reaction?

    N a. 5,063 kips
    N b. 5,104 kips
    Y c. 5,233 kips
    N d. 5,345 kips

4745: While loaded as shown in the COASTAL DRILLER sample load form #3 (drilling), all of the casing is discharged. What is the change in LCG?

    N a. 1.98 feet forward
    N b. 1.95 feet forward
    Y c. 0.02 foot forward
    N d. 0.02 foot aft

4763: The COASTAL DRILLER is loaded as shown in the Sample Load Form #1 (Rig Move). If the entire contents of the port pipe rack are back-loaded to an offshore supply vessel, how much drill water would have to be transferred between tanks 6 and 7 to level the vessel in list?

    N a. 47.2 kips tank #7 to tank #6
    N b. 23.6 kips tank #7 to tank #6
    Y c. 23.6 kips tank #6 to tank #7
    N d. 47.2 kips tank #6 to tank #7

4812: The SS AMERICAN MARINER is ready to bunker with drafts of FWD 21'-04", AFT 26'-04". 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-0170

    Y a. 0.54 ft
    N b. 0.62 ft
    N c. 0.80 ft
    N d. 0.85 ft

5037: Where will you find the requirements for the signals that must be sounded by a mobile offshore drilling unit that is being towed through an area of restricted visibility?

    Y a. COLREGS
    N b. MMS Rules
    N c. SOLAS Convention
    N d. Coast Pilot

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

5523: Before being certified by the American Bureau of Shipping, anchor chain must undergo __________.

    N a. USCG inspection
    Y b. a breaking test
    N c. x-ray inspection
    N d. spectroanalysis

5683: You should consider placing the drilling operations of the DEEP DRILLER in standby when __________.

    Y a. sustained winds exceed 50 knots
    N b. winds exceed 70 knots
    N c. critical motion limits have been exceeded
    N d. waves are greater than 64 feet

5752: 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-0184

    N a. Available GM 2.8 ft
    N b. Available GM 3.2 ft
    Y c. Available GM 3.5 ft
    N d. Available GM 3.8 ft

6041: On offshore drilling units, the fire main system must have enough fire hydrants so that each accessible space may be sprayed with at least __________.

    N a. one spray pattern
    Y b. two spray patterns
    N c. three spray patterns
    N d. four spray patterns

6088: What is the meaning of the signal DX RQ when sent by the International Code of Signals?

    Y a. Are you sinking?
    N b. The call sign of a vessel registered in the Philippines.
    N c. The damage can be repaired at sea.
    N d. There are no tugs available.

6455: Most drill ships and barges have a walled opening below the derrick, open to the water's surface and through which various drilling tools can pass down to the sea floor called a __________.

    Y a. moon pool
    N b. spider deck opening
    N c. pontoon
    N d. keyway

6533: When loading or discharging dry mud or cement, crew members should use facial respirator masks and __________.

    Y a. goggles
    N b. ear plugs
    N c. soft-soled boots
    N d. fireman's outfit

6931: A report of casualty to a mobile offshore drilling unit must include __________.

    N a. the estimated cost of damage to the unit
    N b. an evaluation of who was at fault
    N c. the amount of ballast on board
    Y d. the name of the owner or agent of the unit

7147: What should you do if you have transmitted a distress call a number of times on channel 16 and have received no reply?

    Y a. Repeat the message using any other channel on which you might attract attention.
    N b. Key the microphone several times before transmitting again.
    N c. Turn up the volume on the receiver before transmitting again.
    N d. Report the problem to the head electrician.

7365: What is the minimum required GMT for the DEEP DRILLER in winds less than 70 knots while at a draft of 60 feet?

    N a. 0.17 foot
    N b. 2.62 feet
    Y c. 4.34 feet
    N d. 9.12 feet

8261: When taking soundings on a MODU, coating the tape with chalk helps to __________.

    Y a. better identify the correct reading
    N b. show the depth of any water in an oil tank
    N c. make the tape roll easier
    N d. reduce possibility of sparks

8355: What quality of a diesel fuel is most significant for efficient combustion?

    Y a. Volatility
    N b. Viscosity
    N c. Flash point
    N d. Specific heat

9705: Which of the following statements is/are FALSE in regard to Ro-Ro vessels' spaces that are "specially suitable for vehicles"?

    Y a. The spaces shall NOT be fitted with a flame detecting system.
    N b. The spaces shall be fitted with an approved fixed CO2 fire extinguishing system.
    N c. As an alternative to a fixed CO2 system, the Commandant may permit a water sprinkler system.
    N d. All of the above