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.
22: An inert gas system installed on a tanker is designed to __________.
N a. aid in the stripping and cleaning of cargo tanks N b. increase the rate of discharge of cargo N c. force toxic and explosive fumes from a cargo tank to vent to the outside atmosphere Y d. lower the oxygen levels inside cargo tanks, making explosion nearly impossible 33: Inflatable liferafts are less maneuverable than lifeboats due to their __________.
N a. shape N b. shallow draft N c. large sail area Y d. All of the above 102: You are underway when a fire breaks out in the forward part of your vessel. If possible, you should __________.
Y a. put the vessel's stern into the wind N b. abandon ship to windward N c. call for assistance N d. keep going at half speed 107: What best describes for how long a gas-free test is good?
N a. For as long as is indicated on the gas-free certificate Y b. For the instant that it is made N c. Until valves in line with the tank or compartment are reopened N d. Until changes in temperature or pressure affect the vapor content in the space 231: The Coast Guard inspection required before a Certificate of Inspection can be issued is conducted________________.
N a. when deemed necessary by the Regional Inspection Center Y b. after you apply in writing to the nearest Officer in Charge of Marine Inspection (OCMI) N c. at random from a Coast Guard patrol boat N d. after a formal complaint is filed with the OCMI 349: A marine radar system for surface navigation must be fitted on all ocean or coastwise vessels of over __________.
N a. 1,400 GT N b. 1,500 GT Y c. 1,600 GT N d. 1,700 GT 640: The volume of a vessel's intact watertight space above the waterline is its __________.
N a. free surface N b. marginal stability Y c. reserve buoyancy N d. freeboard 694: What is the international distress frequency for radiotelephones?
N a. 500 kHz N b. 1347 kHz Y c. 2182 kHz N d. 2738 kHz 710: Buoyancy is a measure of the ship's __________.
Y a. ability to float N b. deadweight N c. freeboard N d. midships strength 716: The required amount of water for each person in a lifeboat on an oceangoing vessel, on an international voyage, is __________.
N a. 1 liter N b. 2 liters Y c. 3 liters N d. 4 liters 721: Forces within a vessel have caused a difference between the starboard and port drafts. This difference is called __________.
Y a. list N b. heel N c. trim N d. flotation 759: Determine the free surface correction for a fuel oil tank 30 ft. long by 40 ft. wide by 15 ft. deep, with a free surface constant of 3794. The vessel is displacing 7,000 tons in saltwater.
N a. 0.35 foot Y b. 0.54 foot N c. 0.65 foot N d. 1.38 feet 1020: Which vessels must comply with the vessel bridge-to-bridge radiotelephone regulations while navigating?
N a. Towing vessels 25 feet in length or less Y b. Passenger vessels of 100 gross tons or greater, carrying one or more passengers for hire N c. Power-driven vessels 12 meters or less in length N d. All of the above 1127: Compared to the amount of concentrated foam liquid used, the amount of low expansion mechanical foam produced is __________.
N a. 97 times greater N b. 94 times greater Y c. 10 times greater N d. 2 times greater 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 1368: A fire in electrical equipment should be extinguished by using __________.
N a. salt water N b. foam N c. low-velocity fog Y d. CO2 1464: What is NOT a function of the air supply of a covered lifeboat?
N a. Provides air for engine combustion Y b. Pressurizes water spray system N c. Provides air for passenger respiration N d. Prevents smoke and other noxious fumes from entering craft 1702: You are sailing at 8 knots on a beam reach in an apparent wind of 25 knots. Which statement is TRUE?
N a. The true wind is a little abaft your beam, at just under 25 knots. N b. The apparent wind at the top of your mast will be slightly stronger than 25 knots and slightly farther forward than the wind at deck level. N c. If you turn to a close reach, the apparent wind will reduce in strength. Y d. None of the above are true. 1781: Which frequencies and modes are allocated for distress alerting in GMDSS?
N a. 406 MHz via EPIRB N b. 1626.5-1645.5 MHz via INMARSAT N c. Channel 70 DSC plus six (6) MF/HF DSC frequencies Y d. All of the above 1849: Which line would NOT be used in handling a mainsail?
N a. Halyard N b. Downhaul Y c. Uphaul N d. Sheet 1883: On offshore drilling units, the Muster List ("Station Bill") must be posted in conspicuous locations and signed by the __________.
N a. company man N b. driller N c. owner Y d. Master or person in charge 1940: Life jackets should be stowed in __________.
N a. survival craft N b. messrooms Y c. readily accessible locations N d. locked watertight containers 2184: Your vessel is damaged and is listing to port. The rolling period is short. There is sufficient freeboard so that deck edge submersion is not a problem. What corrective action should be taken FIRST in regard to the vessel's stability?
N a. Press up any slack double-bottom tanks to eliminate free surface N b. Flood any empty double-bottom tanks to add weight low and down N c. Jettison topside weights to reduce KG and KB Y d. Shift any off-center weights from port to starboard 2221: In heavy seas the helmsman should steer the survival craft __________.
Y a. into the seas N b. broadside to the seas N c. in the same direction as the seas N d. in a series of figure-eights 2298: The SS AMERICAN MARINER is ready to load the cargo listed. There is already 3684 tons of cargo on board with a KG of 28.4 feet. Use the white pages of the Stability Data Reference Book to determine the final KG of all the cargo after loading is completed. ST-0055
N a. KG 27.0 feet Y b. KG 27.6 feet N c. KG 28.2 feet N d. KG 28.8 feet 2316: The flammable limits for motor gasoline are __________.
N a. 5.3% to 7% mixture in air N b. 0.9% to 5.9% mixture in air Y c. 1.4% to 7.6% mixture in air N d. 2.5% to 12.8% mixture in air 2451: The end of the joint with the exterior threads is called the __________.
Y a. pin N b. stem N c. box N d. stand 2799: One of the principal dangers inherent in liquefied petroleum gas is __________.
N a. as it warms up it becomes heavier than air N b. the way it reacts with sea water N c. the strong odor it produces Y d. its low temperature causes frostbite or freezing 3004: 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 23.7 feet and the drafts are: FWD 28'-00", AFT 28'-06".
N a. 16° Y b. 21° N c. 41° N d. 56° 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 3391: A semisubmersible, 200 feet in length between draft marks with the LCF 10 feet aft of amidships, records the following drafts: Port Forward 64'-9"; Port Aft 68'-9"; Starboard Forward 59'-9"; and Starboard Aft 63'-9". What is the true mean draft?
N a. 64.25 feet Y b. 64.45 feet N c. 64.75 feet N d. 64.90 feet 3425: What is the trim of a jack-up with a forward draft of 12 feet and an after draft of 13 feet?
N a. 0.5 foot by the stern Y b. 1.0 foot by the stern N c. 2.0 feet by the stern N d. 0.5 feet by the head 3467: An emergency sea anchor may be constructed by using __________.
N a. a boat bucket N b. an air tank filled with water N c. an oar and canvas weighted down Y d. All of the above 3594: After having activated the emergency position indicating radio beacon, you should __________.
N a. turn it off for 5 minutes every half-hour N b. turn it off and on at 5 minute intervals N c. turn it off during daylight hours Y d. leave it on continuously 3681: The DEEP DRILLER, while loaded as shown in the Sample Load Form #4 (Drilling), suffers damage to the port aft column below the waterline. Pumping from tank 8P and 9P is not sufficient to prevent increasing port list and stern down trim. You should consider counterflooding in tank __________.
Y a. 1S N b. 1P N c. C2BS N d. 10S 3829: Inflatable liferafts shall be serviced at an approved servicing facility every 12 months or not later than the next vessel inspection for certification. However, the total elapsed time between servicing cannot exceed __________.
N a. 12 months N b. 15 months Y c. 17 months N d. 18 months 3951: All personnel on board a vessel should be familiar with the rescue boat's __________.
Y a. boarding and operating procedure N b. maintenance schedules N c. navigational systems N d. fuel consumption rates 4154: Coast Guard Regulations require that prior to departure on a three-day voyage, the steering gear, whistle, and communications system between the bridge and engine room must be tested prior to departure no earlier than __________.
N a. 1 hour N b. 4 hours N c. 8 hours Y d. 12 hours 4187: The DEEP DRILLER is drilling at 60 feet draft at a corrected KG of 54.0 feet. Ballast added or discharged to remain at a constant draft is at a VCG of 10 feet. How much non-liquid load would have to be removed from an average height of 130 feet above the keel to meet the maximum allowable KG at a draft of 60 feet for winds greater than 70 knots?
N a. 1283 long tons N b. 817 long tons N c. 679 long tons Y d. 302 long tons 4192: Alterations or repairs on inspected small passenger vessels must be done __________.
N a. under the direction of the Officer in Charge, Marine Inspection N b. in accordance with the regulations of Subchapter "S" (Subdivision and Stability) N c. in accordance with regulations in effect when the vessel was contracted for, as long as the repairs are minor Y d. All of the above 4273: The overturning forces acting on a floating jack-up are generally dominated by __________.
N a. waves N b. current Y c. wind N d. tide 4280: Your drafts are: FWD 6'-02", AFT 6'-06". From past experience, you know that the vessel will increase her draft 1 inch for every 5 tons loaded. There is rig water on board and 15 tons of deck cargo. How many more tons of cargo can legally be loaded and still maintain the same trim? (D037DG )
N a. none Y b. 5 tons N c. 10 tons N d. 20 tons 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 4691: The COASTAL DRILLER, with no list, is at a true mean draft of 10 feet and 10 inches. LM is 1,699,463 ft-kips. Using only tanks #1, #25, and #26, how many kips of drill water must be transferred to level the jack-up?
N a. Transfer 106.2 kips aft from #1 to #25 and #26 Y b. Transfer 53.1 kips each from #25 and #26 forward to #1 N c. Transfer 612 kips from #25 to #26 N d. Vessel is level; no need to transfer 5055: A mobile offshore drilling unit will show the day-shape in DIAGRAM 10 to indicate that it is __________.
N a. at anchor Y b. being towed N c. aground N d. drilling 5261: The DEEP DRILLER, loaded as shown in Sample Load Form #4 (Drilling), suffers major damage which results in flooding in tank C1P. Your best countermeasure is to __________.
Y a. pump from 2P N b. pump from C1P N c. counterflood in 1P N d. counterflood in 10S 5418: Small passenger vessels in coastwise service must carry approved __________.
N a. life floats N b. inflatable buoyant apparatus N c. inflatable liferafts Y d. Any of the above 5522: Radiation spreads a fire by __________.
N a. transmitting the heat of a fire through the ship's metal Y b. transferring heat across an unobstructed space N c. burning liquids flowing into another space N d. heated gases flowing through ventilation systems 5864: 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-0186
Y a. Available GM 4.1 ft N b. Available GM 4.3 ft N c. Available GM 4.7 ft N d. Available GM 5.1 ft 6101: What must be provided on a MODU helicopter deck that is equipped with fueling facilities?
N a. Fuel testing station N b. Foam testing station Y c. Foam fire protection system N d. Fire alarm 6543: Corrosive liquids and acids should have what kind of label?
N a. Skull and crossbones N b. Yellow N c. Red Y d. White 6947: Which record must be retained on board after a report of casualty to a MODU?
N a. Preventive maintenance log Y b. Storage plans N c. Oil Record Book N d. Repair record book 7318: A cabinet or space containing the controls or valves for the fixed firefighting system must be __________.
Y a. posted with instructions on the operation of the system N b. ventilated and equipped with explosion-proof switches N c. painted with red and black diagonal stripes N d. equipped with a battery powered source of emergency lighting 7591: Stability is determined principally by the location of the center of gravity and the __________.
N a. aft perpendicular Y b. center of buoyancy N c. keel N d. center of flotation 7687: When displacement increases, the free surface moments of slack tanks __________.
N a. increase N b. decrease N c. are inversely proportional Y d. remain unchanged 8281: In storm conditions, when the DEEP DRILLER is in 600 feet water depth, and the high-line tension (HLT) is 350 kips, completely slacking the two leeward mooring line tensions reduces the HLT to __________.
N a. 375 kips Y b. 275 kips N c. 245 kips N d. 220 kips 8583: After cranes have been installed on offshore drilling units the hooks, hook block, slings, rib and other rigging must be load tested. This test must be performed once each __________.
N a. 12 months N b. 24 months N c. 36 months Y d. 48 months 9293: An elevated jack-up weighs 14,000 kips. The drill floor, weighing 700 kips, is skidded 10.0 feet to starboard. The change in TCG is __________.
N a. 9.00 feet starboard Y b. 0.50 foot starboard N c. 1.50 foot starboard N d. 1.00 foot starboard 9455: The original equilibrium position is stable when __________.
Y a. metacentric height is positive N b. metacentric radius is positive N c. KG exceeds maximum allowable limits N d. free surfaces are excessive 9457: The center of buoyancy is located at the __________.
N a. geometric center of the waterplane area N b. intersection of the vertical centerline and line of action of the buoyant force N c. center of gravity of the vessel corrected for free surface effects Y d. geometric center of the displaced volume