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.


34: Which single-letter sound signal(s) may only be made in compliance with the Rules of the Road?


54: On surface type offshore drilling units, each survival craft must be capable of being launched to the water at the minimum operating draft, under unfavorable conditions of trim and with the unit listed not less than __________.


147: Your vessel is on a voyage of three months duration. The number of sanitary inspections required is __________.


229: Fuel oil tank vents are fitted with a screen which will stop __________.

    N a. oil from flowing out of the tank vent
    N b. air from entering the tank vent
    N c. vapors from leaving the tank vent
    Y d. flames on deck from entering the tank vent

438: A crew member has suffered frostbite to the toes of both feet. You should __________.

    Y a. immerse the feet in warm water
    N b. warm the feet with a heat lamp
    N c. warm the feet at room temperature
    N d. rub the feet

461: Which statement about transmitting distress messages by radiotelephone is INCORRECT?

    Y a. It is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds duration.
    N b. Channel 16 (156.8 MHz) may be used for distress messages.
    N c. If no answer is received on the designated distress frequencies, repeat the distress call on any frequency available.
    N d. Distress messages should first be transmitted on 2182 kHz.

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

612: The service life of distress signals must be not more than __________.

    Y a. forty two months from the date of manufacture
    N b. thirty six months from the date of the last inspection
    N c. twenty four months from the date of approval
    N d. twelve months from the date of purchase

674: A distress frequency used on radiotelephone is __________.

    N a. 400 kilohertz
    Y b. 2182 kilohertz
    N c. 2728 kilohertz
    N d. 8221 kilohertz

852: Which statement concerning the application of dry chemical powder is FALSE?

    Y a. At temperatures of less than 32°F, the extinguisher must be recharged more often.
    N b. When possible, the fire should be attacked from windward.
    N c. The stream should be directed at the base of the fire.
    N d. Directing the stream into burning flammable liquid may cause splashing.

889: Small quantities of flammable liquids needed at a work site should be __________.

    N a. used only under the supervision and direction of a ship's officer
    N b. tightly capped and stowed with other tools near the job site when securing at the end of the day
    N c. used only when a pressurized fire hose is laid out ready for immediate use
    Y d. in a metal container with a tight cap

929: According to Annex V to MARPOL 73/78, garbage containing plastic is permitted to be disposed of by __________.

    Y a. incinerating offshore
    N b. discharging when at least 12 nautical miles from nearest land
    N c. grinding to less than 1" and discharging at least 12 nautical miles from nearest land
    N d. grinding to less than 1" and discharging at least 25 nautical miles from nearest land

1003: You are on a vessel that has a metacentric height of 4 feet, and a beam of 50 feet. What can you expect the rolling period of the vessel to be?

    N a. 10.0 seconds
    N b. 10.5 seconds
    Y c. 11.0 seconds
    N d. 11.5 seconds

1015: Which group should be used to send the signal Longitude 109°34'West?

    N a. D0934
    N b. LO10934W
    Y c. G10934
    N d. L10934

1520: When operating the air supply system in a covered lifeboat the __________.

    N a. fuel supply valve should be closed
    Y b. hatches, doors, and oar ports should be closed
    N c. air cylinder shut-off valve should be closed
    N d. engine should be shut off

1566: CO2 extinguishes a fire by __________.

    N a. cooling
    Y b. smothering
    N c. chemical action
    N d. All of the above

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

1603: During loading and discharging operations, in addition to when the cargo tanks have been properly filled, each inert gas system must be capable of maintaining a minimum gas pressure of __________.

    N a. 150 millimeters of water pressure
    N b. 125 millimeters of water pressure
    Y c. 100 millimeters of water pressure
    N d. 75 millimeters of water pressure

1625: A shipmate suffers a heart attack and stops breathing. You must __________.

    N a. immediately give a stimulant, by force if necessary
    N b. make the victim comfortable in a bunk
    N c. administer oxygen
    Y d. immediately start CPR

1848: Your vessel displaces 477 tons and measures 116'L x 31'B. You ship a large wave on the after deck. What is the reduction in GM due to free surface before the water drains overboard, if the after deck measures 54'L x 31'B and the weight of the water is 51.5 tons?

    N a. 6.43 feet
    N b. 6.75 feet
    N c. 6.99 feet
    Y d. 7.25 feet

1897: Which is a part of a vessel's standing rigging?

    N a. Sheet
    Y b. Backstay
    N c. Topping lift
    N d. Downhaul

2102: The sails are properly set and trimmed. As a vessel heads up from a beam reach to close-hauled the __________.

    N a. apparent wind remains steady
    N b. heeling moment decreases
    N c. side slip decreases
    Y d. speed decreases

2128: Your drafts are: FWD 5'-08", AFT 6'-04". From past experience, you know that the vessel will increase her draft 1 inch for every 7 tons loaded. There is rig water on board and 10 tons of deck cargo. How many more tons of cargo can be loaded and still maintain the same trim? (D037DG )

    N a. 14.8 tons
    N b. 18.0 tons
    Y c. 25.0 tons
    N d. 32.0 tons

2230: To check stability, a weight of 40 tons is lifted with the jumbo boom, whose head is 40 feet from the ship's centerline. The clinometer shows a list of 6.5° with the weight suspended. Displacement including weight is 16,000 tons. The GM while in this condition is __________.

    N a. 0.21 foot
    N b. 0.43 foot
    Y c. 0.88 foot
    N d. 1.02 feet

2267: During the towing of a survival craft, a lookout should be on station to __________.

    Y a. release the towline in an emergency
    N b. help the helmsman steer
    N c. look for food and water
    N d. check the water level in the bilge

2271: When abandoning ship, after launching the motor lifeboat you should __________.

    N a. plot a course for the nearest land
    N b. take a vote on which direction you should go
    Y c. stay in the immediate area
    N d. go in one direction until fuel runs out

2445: What does the DSC control unit do if the GMDSS Radio Operator fails to insert updated information when initiating a DSC distress alert?

    N a. It will abort the transmission and set off an audible alarm that must be manually reset.
    N b. It will initiate the DSC distress alert but, as no information will be transmitted, rescue personnel will not be able to identify the vessel, its position or its situation.
    Y c. It will initiate the DSC distress alert and default information will automatically be transmitted.
    N d. It will initiate the DSC distress alert, but any station receiving it will have to establish contact with the distressed vessel to determine its identity, position and situation.

2471: The device that allows a floating MODU to sway without bending the marine riser system is the __________.

    N a. yaw joint
    N b. sway joint
    N c. slip joint
    Y d. flex or ball joint

2511: When lowering a personnel net to pick up personnel from a boat, the personnel basket should be __________.

    Y a. lowered over open water
    N b. tied to the vessel with a tag line
    N c. dropped in the water
    N d. tied to the rig with a tag line

2526: 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-0069

    N a. Available GM 4.2 ft
    Y b. Available GM 3.9 ft
    N c. Available GM 3.7 ft
    N d. Available GM 3.5 ft

2695: A certificated lifeboatman assigned to command the lifeboat must __________.

    N a. be the first individual to board the craft
    N b. drain the hydraulic pressure before lowering the craft
    Y c. have a list of the persons assigned to the lifeboat
    N d. All of the above

2795: The true mean draft of a MODU is the draft __________.

    N a. midway between drafts forward and aft
    Y b. at the center of flotation
    N c. at the load line
    N d. at the center of buoyancy

2807: A vessel heading SSW is on a course of __________.

    Y a. 202.5°
    N b. 225.0°
    N c. 247.5°
    N d. 270.0°

2927: If the metacentric height is small, a floating MODU will __________.

    Y a. be tender
    N b. have a quick and rapid motion
    N c. be stiff
    N d. yaw

3024: Your sailing drafts are: FWD 17'-07", AFT 18'-05" and the GM is 3.4 feet. What will be the angle of list if #4 port double bottom (capacity 140 tons, VCG 2.6 feet, and 26 feet off the centerline) is filled with saltwater? (Use the data in Section 1, the blue pages, of the Stability Data Reference Book)

    N a. Less than 1°
    N b. 3°
    Y c. 6°
    N d. 9°

3061: When transferring survivors from a survival craft to a rescue vessel, personnel on board the craft should __________.

    N a. remove their lifejackets to make it easier to climb on board the rescue vessel
    N b. climb on top of the survival craft while waiting their turn to transfer to the rescue vessel
    Y c. remain seated inside the survival craft and make the transfer one person at a time
    N d. enter the water and swim over to the rescue vessel

3064: Your sailing drafts are: FWD 18'-03", AFT 19'-07" and the GM is 4.3 feet. What will be the angle of list if #2 starboard double bottom (capacity 78 tons, VCG 2.7 feet, and 24.5 feet off the centerline) is filled with saltwater? (Use the data in Section 1, the blue pages, of the Stability Data Reference Book)

    Y a. 3°
    N b. 5°
    N c. 7°
    N d. 9°

3198: Starting motors, generators, and other spark producing devices should be mounted as high above the bilges as possible to __________.

    N a. keep them dry when the bilges are full of water
    N b. keep them cool when the vessel is underway
    N c. make them more accessible for repairs
    Y d. prevent accidental ignition of any gasoline vapors that may have accumulated in the bilges

3236: While at your lifeboat station, you hear a signal consisting of two short blasts of the whistle. This signal indicates __________.

    N a. "abandon ship"
    N b. "commence lowering boats"
    Y c. "stop lowering boats"
    N d. "secure from boat stations"

3455: A semisubmersible, 200 feet in length between draft marks with the LCF 10 feet aft of amidships, records the following drafts: Port Forward 74'-09"; Port Aft 78'-09"; Starboard Forward 69'-09"; and Starboard Aft 73'-09". What is the list?

    N a. -1.0 foot
    N b. -2.5 feet
    Y c. -5.0 feet
    N d. -10.0 feet

3475: What is the increase in the longitudinal 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. 0.50 foot
    Y b. 0.47 foot
    N c. 0.27 foot
    N d. 0.13 foot

3520: How should the number "5" be pronounced when spoken on the radiotelephone?

    N a. FIVE-ER
    N b. NEW-MARL-FIVE
    N c. NUM-ERL-FIVE
    Y d. PAN-TAH-FIVE

3617: The DEEP DRILLER is moored in 600 feet of water. The average line tension is 190 kips. What is the total vertical component of chain tension?

    N a. 55.3 long tons
    N b. 428.8 long tons
    Y c. 442.4 long tons
    N d. 678.4 long tons

4159: A yellow signal, floating in the air from a parachute, about 300 feet above the water, indicates that a submarine __________.

    Y a. will be coming to periscope depth
    N b. will be coming to the surface
    N c. is on the bottom in distress
    N d. is in distress and will try to surface

4164: The color of the signal flares sent up by a submarine about to surface from periscope depth is __________.

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

4373: In comparison to electric power, hydraulic power for jacking systems has the advantage of __________.

    Y a. better control capabilities
    N b. less maintenance and repair
    N c. fewer personnel needed during jacking
    N d. less preload needed

4534: The SS AMERICAN MARINER has on board 5577 tons of cargo with an LCG-FP of 275.55 feet. See the distribution of the cargo to be loaded. Use the white pages of The Stability Data Reference Book to determine the final LCG-FP of the cargo. ST-0163

    Y a. LCG-FP 271.2 feet
    N b. LCG-FP 272.1 feet
    N c. LCG-FP 273.6 feet
    N d. LCG-FP 274.6 feet

4748: The SS AMERICAN MARINER has on board 3885 tons of cargo with an LCG-FP of 278.45 feet. See the distribution of the cargo to be loaded. Use the white pages of The Stability Data Reference Book to determine the final LCG-FP of the cargo. ST-0168

    N a. LCG-FP 267.7 feet
    Y b. LCG-FP 268.4 feet
    N c. LCG-FP 269.2 feet
    N d. LCG-FP 270.6 feet

5092: You are scheduled to load 3200 tons of cargo, 45 tons of crew effects and stores and 259 tons of fuel. Use the blue pages of the Stability Data Reference Book to determine the vessel's mean draft in fresh water:

    N a. 17'-00"
    Y b. 16'-09"
    N c. 16'-06"
    N d. 16'-04"

5247: In case of major damage to column C1P while the DEEP DRILLER is on location, you should pump from port-forward lower-hull tanks using __________.

    N a. all four ballast pumps
    Y b. both port-side ballast pumps
    N c. saltwater service pump to supplement port-side ballast pumps
    N d. drill water pump to supplement port-side ballast pumps

5557: The holding power of an anchor is the __________.

    N a. maximum sustained vertical load an anchor will resist before dragging
    Y b. maximum sustained horizontal load an anchor will resist before dragging
    N c. maximum sustained vertical load an anchor will resist before the mooring line breaks
    N d. maximum sustained horizontal load an anchor will resist before the mooring line breaks

5677: The DEEP DRILLER may remain at operating draft instead of deballasting to survival draft when __________.

    Y a. critical motion limits have not been exceeded
    N b. waves approach within two feet of the spider deck
    N c. the maximum wave height is greater than 64 feet
    N d. winds are greater than 70 knots

5817: The two main types of load cells used in mooring tension gauges are __________.

    Y a. distortion and compression
    N b. hydraulic and mechanical
    N c. magnetic and applied torque
    N d. frictionless and hydraulic

6049: While proceeding to a distress site, you hear the words "Seelonce mayday" on the radiotelephone. Which action should you take?

    N a. Resume base course and speed as your assistance is no longer required.
    N b. Acknowledge receipt and advise your course, speed, and ETA.
    N c. Relay the original distress message as no other vessel has acknowledged it.
    Y d. Monitor the radiotelephone but do not transmit.

6485: The main function of the drawworks on a MODU is to __________.

    N a. transport tubulars from the pipe racks to the derrick floor
    N b. maintain constant tension on the marine riser
    N c. store and secure the excess drill line
    Y d. lower and hoist the drill string into and out of the drilled hole

7377: A semisubmersible rig under tow should be ballasted down if __________.

    Y a. motion begins to be excessive
    N b. water begins to break over the pontoons
    N c. period of roll exceeds 12 seconds
    N d. forward progress is halted by head wind

8077: Progressive flooding on a MODU is controlled by securing watertight boundaries and __________.

    N a. transferring drill water
    N b. dumping bulk materials
    Y c. pumping out flooded compartments
    N d. evacuating the unit

8392: You are preparing for what promises to be a rough ocean passage. Your 120-foot schooner carries a yard on the foremast about 50 feet above the water. The yard weighs about 1000 pounds. If you take the yard down and stow it on deck for the trip, you will __________.

    N a. decrease the GM
    N b. give the vessel a gentler roll
    Y c. increase the metacentric height
    N d. decrease the reserve buoyancy

8783: When using a hand held smoke signal aboard a survival craft, you should activate the signal __________.

    Y a. on the downwind side of the craft
    N b. on the upwind side of the craft
    N c. inside the craft
    N d. at the stern of the craft

8833: A jack-up level at 12.5 feet draft transfers 100 kips of drill water from a tank with a TCG of -30 feet to a starboard tank with a TCG of 70 feet. The resulting starboard draft is 13 feet. The moment required to change list one inch (MCL1") is __________.

    N a. 667 foot-kips
    Y b. 833 foot-kips
    N c. 1,400 foot-kips
    N d. 1,667 foot-kips