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.


151: You are on a supply run to an offshore drilling rig. On board is the cargo listed. What is the height above the main deck of the center of gravity of the cargo? ST-0002


480: A tanker's mean draft is 32'-05". At this draft, the TPI is 178. The mean draft after loading 1200 tons will be __________.


582: Extra chemicals for producing chemical foam should be stored __________.


645: A tug should not come alongside a tank vessel in way of its cargo tanks while it is loading grade A, B, or C cargo without the permission of the __________.

    N a. the cognizant OCMI
    N b. superintendent of the shoreside facility
    N c. local fire department
    Y d. person in charge of the transfer

673: The grab rail of a metal lifeboat is normally located __________.

    Y a. along the turn of the bilge
    N b. along each side of the keel
    N c. near the top of the gunwale
    N d. at the bow and at the stern

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

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

828: A fire in a pile of dunnage would be classified as class __________.

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

893: On a vessel of 12,000 tons displacement, a tank 60 feet long, 50 feet wide, and 20 feet deep is half filled with fresh water (SG 1.000) while the vessel is floating in saltwater (SG 1.026) What is the reduction in metacentric height due to free surface?

    N a. 0.97 ft.
    N b. 1.01 ft.
    N c. 1.35 ft.
    Y d. 1.44 ft.

908: If ignited, which material would be a class B fire?

    N a. Magnesium
    N b. Paper
    N c. Wood
    Y d. Diesel Oil

1005: Which signal should be used to send the group "Distance 750 nautical miles"?

    N a. D750
    N b. D750N
    Y c. R750
    N d. R750N

1246: Inflatable liferafts are provided with __________.

    N a. a Very pistol
    Y b. a towing connection
    N c. a portable radio
    N d. canned milk

1292: What is the MOST important consideration when determining how to fight an electrical fire?

    N a. Whether the fire is in machinery or passenger spaces
    Y b. Danger of shock to personnel
    N c. The amount of toxic fumes created by the extinguisher
    N d. Maintaining electrical power

1405: When launching an inflatable liferaft, you should make sure that the operating cord is __________.

    Y a. fastened to some substantial part of the vessel
    N b. not fastened to anything
    N c. secured to the hydrostatic release
    N d. fastened to the raft container

1498: The spread of fire is prevented by __________.

    Y a. cooling surfaces adjacent to the fire
    N b. leaving combustibles in the endangered area
    N c. increasing the oxygen supply
    N d. All of the above

1552: INTERNATIONAL AND INLAND A sailing vessel must keep course and speed when __________.

    Y a. being overtaken
    N b. to windward of another sailing vessel
    N c. to leeward of another sailing vessel
    N d. crossing a vessel engaged in fishing

1734: Which procedure should be followed when individuals are rescued in cold climates and suffer from hypothermia?

    N a. Give them brandy or other alcoholic stimulation to promote a return to an acceptable body temperature.
    Y b. Move them to a warm room to gradually raise their body temperature.
    N c. Keep them moving to stimulate circulation to raise their body temperature.
    N d. Warm them under an electric blanket to rapidly regain normal body temperature.

1856: A sailing vessel with the wind coming from 180° relative would be __________.

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

1919: A sailing vessel with the wind coming from 050° relative would be __________.

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

1927: On offshore drilling units, the minimum number of inclined ladders which must be fitted between each weather deck is __________.

    Y a. 1
    N b. 2
    N c. 3
    N d. 4

1943: Which statement concerning satellite EPIRBs is TRUE?

    Y a. Once activated, these EPIRBs continuously send up a signal for use in identifying the vessel and for determining the position of the beacon.
    N b. The coded signal identifies the nature of the Distress situation.
    N c. The coded signal only identifies the vessel's name and port of registry.
    N d. If the GMDSS Radio Operator does not program the EPIRB, it will transmit default information such as the follow-on communications frequency and mode.

1958: You have 710 tons of below deck tonnage. There is no liquid mud aboard. If you have 150 tons of cargo above deck with a VCG above the deck of 3.1 feet, what is the maximum allowed VCG of the remainder of the deck cargo that is permitted? (See illustration D036DG, stability letter for M.V. Hudson) (D036DG )

    N a. 1.84 feet
    N b. 2.13 feet
    N c. 2.43 feet
    Y d. 2.78 feet

2148: Your vessel's drafts are FWD 19'-03", AFT 21'-07". Use the information in Section 1, the blue pages, of the Stability Data Reference Book to determine the final drafts if 142 tons of fuel are pumped 86 feet aft.

    Y a. FWD 18'-09", AFT 22'-01"
    N b. FWD 19'-00", AFT 21'-01"
    N c. FWD 19'-00", AFT 21'-08"
    N d. FWD 19'-01", AFT 21'-04"

2392: Your vessel's drafts are: FWD 13'-11", AFT 16'-05". 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)

    N a. 7109 tons
    N b. 7316 tons
    N c. 7432 tons
    Y d. 7779 tons

2506: Grade E combustible liquids are those having flash points of __________.

    N a. 80°F or less
    N b. greater than 80°F and less than 115°F
    N c. greater than 115°F and less than 150°F
    Y d. 150°F or greater

2704: What must be located on the discharge side of the pump in a fire main system?

    Y a. Pressure gauge
    N b. Strainer
    N c. Reduction valve
    N d. International shore connection

2941: The existence of liquids in partially full tanks or compartments of a MODU causes a virtual rise in the height of the __________.

    N a. metacenter
    N b. center of buoyancy
    N c. center of flotation
    Y d. center of gravity

2954: Your sailing drafts are: FWD 19'-06", AFT 20'-10" and the GM is 3.3 feet. What will be the angle of list if the #2 starboard deep tank (capacity 100 tons, VCG 19.1 feet, and 24 feet off the centerline) is filled? (Use the data in Section 1, the blue pages, of the Stability Data Reference Book)

    N a. Less than 1°
    N b. 2°
    Y c. 4°
    N d. 6°

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

3076: The SS AMERICAN MARINER is ready to bunker with drafts of FWD 11'-01", AFT 15'-01". 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-0103

    N a. 0.87 foot
    N b. 0.98 foot
    Y c. 1.14 feet
    N d. 1.25 feet

3125: The center of flotation for the COASTAL DRILLER is located at the geometric center of the __________.

    N a. underwater volume
    N b. above water volume
    N c. amidships section
    Y d. waterplane area

3200: Which circumstance concerning an inspected passenger vessel would require knowledge and approval of the Officer in Charge, Marine Inspection? (small passenger vessel regulations)

    Y a. The removal of a watertight bulkhead
    N b. A minor overhaul of the propulsion machinery
    N c. Renewal of a FCC Certificate for a radiotelephone
    N d. All of the above

3243: If there's a fire aboard your vessel, you should FIRST __________.

    N a. notify the Coast Guard
    N b. cut off air supply to the fire
    N c. have passengers put on life preservers
    Y d. sound the alarm

3301: A semisubmersible, while floating level, displaces 25,000 long tons. LCG is 2 feet forward of amidships. Bulk, weighing 300 long tons, is placed in P-tanks located 50 feet aft of amidships. What is the new LCG?

    N a. 1.43 feet forward of amidships
    Y b. 1.38 feet forward of amidships
    N c. 0.62 foot forward of amidships
    N d. 0.57 foot forward of amidships

3346: An inflatable liferaft is thrown into the water from a sinking vessel. Which action occurs automatically after the painter trips the CO2 bottles to inflate the raft?

    Y a. The sea anchor is deployed.
    N b. The floor inflates.
    N c. If upside down, the raft will right itself.
    N d. The painter detaches from the raft.

3371: The DEEP DRILLER at a draft of 60.0 feet discharges 68.94 long tons of ballast. What is the new draft?

    N a. 66.0 feet
    N b. 60.5 feet
    Y c. 59.5 feet
    N d. 55.0 feet

3377: The DEEP DRILLER at a draft of 58.0 feet loads 68.94 long tons of ballast. What is the new draft?

    N a. 52.0 feet
    N b. 57.5 feet
    Y c. 58.5 feet
    N d. 64.0 feet

3411: 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-0127

    Y a. 7.9 feet
    N b. 7.3 feet
    N c. 6.4 feet
    N d. 4.3 feet

3585: When a man who has fallen overboard is being picked up by a rescue boat, the boat should normally approach with the wind __________.

    N a. astern and the victim just off the bow
    N b. ahead and the victim just off the bow
    N c. just off the bow and the victim to windward
    Y d. just off the bow and the victim to leeward

3602: You are on a Mariner class cargo vessel. Your drafts are: FWD 22'-06", AFT 25'-06". You wish to increase the calculated GM of 4.8' to 5.9'. What tanks should you ballast? (Use the white pages in the Stability Data Reference Book.)

    N a. Tanks: DB3, DB4
    N b. Tanks: DB5, DT6
    Y c. Tanks: DB2, DB5
    N d. Tanks: DB2, DB6, DB7

3734: Which procedure should be followed when individuals are rescued in cold climates and suffer from hypothermia?

    N a. Give them brandy or other alcoholic stimulation to promote a return to an acceptable body temperature.
    Y b. Move them to a warm room to gradually raise their body temperature.
    N c. Keep them moving to stimulate circulation to raise their body temperature.
    N d. Warm them under an electric blanket to rapidly regain normal body temperature.

3751: A shipmate chokes suddenly, cannot speak, and starts to turn blue. You should __________.

    Y a. perform the Heimlich maneuver
    N b. make the victim lie down with the feet elevated to get blood to the brain
    N c. immediately administer CPR
    N d. do nothing until the victim becomes unconscious

3928: Immediately after abandoning a vessel, lookouts should be posted aboard liferafts to look for __________.

    Y a. survivors in the water
    N b. food and water
    N c. land
    N d. bad weather

3944: What is the most vulnerable part of the fire main system?

    N a. The fire pump
    N b. Exposed hard piping
    N c. The hydrant valve
    Y d. The fire hose

3972: The external recognition light can be seem up to two miles and is shown as item number __________. (D014SA )

    N a. 2
    N b. 3
    Y c. 6
    N d. 16

4071: The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). What are the new LM (longitudinal moments) if the entire contents of Salt Water Ballast Tanks 1P and 1S are discharged?

    Y a. 5,191 ft-tons
    N b. 13,414 ft-tons
    N c. 31,992 ft-tons
    N d. 69,175 ft-tons

4355: If the maximum leg penetration of the COASTAL DRILLER is 75 feet, the water depth value in the Allowable Wind and Wave Charts must be increased by __________.

    N a. 75 feet
    Y b. 50 feet
    N c. 25 feet
    N d. 0 feet

4457: Prior to entering a davit-launched liferaft, you should make sure that __________.

    Y a. the liferaft is well ventilated of excess carbon dioxide
    N b. all personnel have removed their life preservers to facilitate boarding
    N c. the door flap has been cut away and stowed inside the raft
    N d. All of the above

4505: The height of the longitudinal metacenter of the COASTAL DRILLER at a displacement of 13,810 kips is __________.

    N a. 256.51 feet
    Y b. 255.11 feet
    N c. 254.60 feet
    N d. 253.20 feet

4761: Because there is a possibility of fuel oil being discharged overboard from a full fuel oil tank, it is decided to transfer 25 kips from tank #14 to tank #13. See COASTAL DRILLER Sample Load Form #1 (Rig Move). What would be the change in transverse free surface moments?

    Y a. 1492 ft-kips
    N b. 674 ft-kips
    N c. 404 ft-kips
    N d. 270 ft-kips

5124: The SS AMERICAN MARINER is ready to bunker with drafts of FWD 14'-04", AFT 18'-08". 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-0173

    Y a. 1.05 feet
    N b. 1.15 feet
    N c. 1.25 feet
    N d. 1.31 feet

5201: If the low side bilge pump fails and the high side bilge pump has insufficient suction to dewater the low side of the COASTAL DRILLER when afloat, you should use the __________.

    Y a. saltwater eductor system
    N b. raw water tower pumps
    N c. mud pumps
    N d. preload pumps

5434: You are hoisting a heavy lift with the jumbo boom. Your vessel displaces 5230 T. The 35-ton weight is on the pier and its center is 60' to starboard of the centerline. The head of the boom is 105' above the base line and the center of gravity of the lift when stowed on deck will be 42' above the base line. As the jumbo boom takes the strain the ship lists to 5°. What is the GM with the cargo stowed?

    N a. 4.11
    N b. 4.54
    Y c. 4.98
    N d. 5.13

5503: What are the two main types of stud link chain?

    N a. Oil Rig chain and Oil Field Stud Link chain
    Y b. Flash-butt welded chain and Di-Lok chain
    N c. Flash-butt welded chain and Oil Rig chain
    N d. Oil Field Stud Link chain and Flash-butt welded chain

5701: The vessel motion that can significantly affect mooring line tensions on a MODU is __________.

    N a. roll
    N b. yaw
    Y c. surge
    N d. pitch

6261: When should the emergency position-indicating radio beacon be activated after abandoning a MODU?

    Y a. Immediately
    N b. After one hour
    N c. Only when another vessel is in sight
    N d. Only after sunset

6401: Why must the drilled hole be filled with drilling mud when tripping the drill string out of the hole?

    N a. To maintain circulation to the mud pits
    N b. To compensate for MODU heave
    N c. To keep the mud agitated
    Y d. To prevent reduction of fluid head on the formations

6496: In a water-tube marine type boiler, after the steam leaves the generating tubes, in what part of the boiler is temperature of the steam increased?

    N a. Mud drum
    Y b. Superheater
    N c. Economizer
    N d. Firebox

6755: Each fireman's outfit and its spare equipment on a MODU must be stowed __________.

    N a. in a locked cabinet in the machinery space
    N b. in an unlocked cabinet in the machinery space
    Y c. in a separate and accessible location
    N d. at a fire hydrant location

7603: Initial stability refers to stability __________.

    Y a. at small angles of inclination
    N b. when loaded with minimum deck load
    N c. when at transit draft
    N d. when GZ is zero

8817: A jack-up has 8 inches of trim by the stern. Calculations show that the moment required to change trim one inch (MCT1") is 500 foot-kips. To level the unit, how far must a weight of 50 kips be transferred toward the bow?

    N a. 10.0 feet
    N b. 62.5 feet
    Y c. 80.0 feet
    N d. 100.0 feet