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.
57: The minimum concentration of a vapor in air which can form an explosive mixture is called the __________.
N a. auto-ignition point N b. flash point Y c. lower explosive limit (LEL) N d. threshold limit value (TLV) 82: You are fighting a class "B" fire with a portable dry chemical extinguisher. The discharge should be directed __________.
N a. to bank off a bulkhead onto the fire Y b. at the seat of the fire, starting at the near edge N c. over the top of the fire N d. at the main body of the fire 329: Which statement about the free surface effect is TRUE?
Y a. It has the same affect on initial stability whether the tank is 75% full or 25% full. N b. The free surface effect usually increases at angles of heel above 25°. N c. The effect increases if the tank is off the centerline. N d. The effect can be reduced by shifting weights vertically. 340: Which statement about the free surface correction is TRUE?
N a. It is added to the uncorrected GM to arrive at the corrected available GM. Y b. It is obtained by dividing the free surface moments by 12 times the volume of displacement. N c. It is obtained by dividing the total free surface by the total vertical moments. N d. It is subtracted from the total longitudinal moments before dividing by displacement to find LCG. 547: Channel 13 (156.65 MHz), the designated bridge-to-bridge channel, may NOT be used to __________.
N a. exchange navigational information between vessels N b. exchange navigational information between a vessel and a shore station N c. conduct necessary tests Y d. exchange operating schedules with company dispatcher 733: Lifeboat hatchets should be __________.
N a. kept in a locker Y b. secured at each end of the boat with a lanyard N c. kept next to the boat coxswain N d. kept in the emergency locker on the ship and brought to the lifeboat when needed 783: A person referring to the stern sheets of a lifeboat is speaking of __________.
N a. the line attached to the tack of the lugsail N b. the emergency rudder N c. a canvas awning Y d. the aftermost seating 807: The space containing carbon dioxide cylinders shall be properly ventilated and designed to prevent an ambient temperature in excess of __________.
N a. 75°F N b. 100°F Y c. 130°F N d. 165°F 915: Which is/are required for engine exhaust pipe installations on small passenger vessels?
N a. Protection where people or equipment can contact the pipe. N b. Piping must be arranged so that water backflow cannot reach the engine exhaust ports N c. Dry exhaust pipe ending at the transom should be located as far outboard as possible Y d. All of the above 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 972: Which statement concerning carbon dioxide is FALSE?
N a. It displaces the oxygen in the air. N b. It cannot be seen. N c. It cannot be smelled. Y d. It is safe to use near personnel in a confined space. 984: The lifesaving signal indicated by a horizontal motion of a white light or white flare means __________.
N a. "Landing here highly dangerous" N b. "Negative" N c. "Avast hauling" Y d. All of the above 1035: The letter G, when sent with a complement, may be followed by __________.
N a. two numerals N b. two letters N c. three or four numerals Y d. four or five numerals 1063: Gasoline tank vent lines on board small passenger vessels must be fitted with removable flame screens __________.
N a. and 30 square inches of louvers N b. three inches in diameter with a check valve to prevent water from entering in heavy weather N c. three inches in circumference inside the fill pipe Y d. consisting of a single screen of at least 30 X 30 mesh, corrosion resistant wire 1068: The "flammable limits" of an atmosphere are the __________.
N a. two temperatures between which an atmosphere will self ignite Y b. upper and lower percentage of vapor concentrations in an atmosphere which will burn if an ignition source is present N c. upper and lower pressures between which an atmosphere will not burn N d. two temperatures between which an atmosphere will burn if an ignition source is present 1242: The bosun has thrown the liferaft into the water before abandoning the vessel. The operating cord __________.
Y a. serves as a sea painter N b. detaches from the liferaft automatically N c. is used to rig the boarding ladder N d. is cut immediately as it is of no further use 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 1476: Your vessel has 3 lifeboats on each side. The aftermost boat on the starboard side is designated as boat number __________.
N a. 6 Y b. 5 N c. 3 N d. 3 STARBOARD 1478: There is a fire in the crew's quarters of your vessel. You should __________.
N a. ventilate the quarters as much as possible N b. prepare to abandon ship Y c. close all ventilation to the quarters if possible N d. attempt to put the fire out yourself before sounding the alarm 1557: When a sea anchor for a lifeboat is properly rigged, it will __________.
N a. completely stop the lifeboat from drifting Y b. help to prevent broaching N c. prevent the lifeboat from pitching N d. None of the above 1611: How should longitude 116°54.9'E be written when preparing an AMVER report?
N a. Q1169 N b. 116.9E Y c. 11655E N d. 117E 1649: The sails are properly set and trimmed. As a vessel heads up from a beam reach to close hauled the __________.
N a. true wind velocity increases N b. heeling moment decreases N c. side slip decreases Y d. jib sheet must be hardened up 1935: Temporary Certificates of Inspection for offshore drilling units are effective until the __________.
N a. Operations Manual is approved N b. Minerals Management Service approval is issued N c. classification society approval is issued Y d. permanent Certificate of Inspection is issued 1941: On offshore drilling units, boat drills must be conducted at least __________.
Y a. monthly N b. quarterly N c. daily N d. annually 1985: Each emergency generator on a mobile offshore drilling unit, when tested, must be run under a full load for at least __________.
N a. one hour Y b. two hours N c. ten hours N d. four hours 2097: If you reef a marconi mainsail, the sail area __________.
Y a. becomes less N b. becomes larger N c. does not change N d. moves aft 2268: To what chemical family does chlorallylene belong?
N a. Alcohols N b. Esters N c. Glycol ethers Y d. Substituted allyl 2452: Your vessel's drafts are: FWD 22'-03", AFT 22'-09"; and the KG is 23.2 feet. What is the righting moment when the vessel is inclined to 30°? (Use the reference material in Section 1, the blue pages, of the Stability Data Reference Book)
N a. 20,790 foot-tons N b. 22,200 foot-tons Y c. 25,520 foot-tons N d. 28,080 foot-tons 2483: You are keeping the required garbage disposal records. The amount of garbage disposed must be stated in __________.
Y a. cubic meters N b. both cubic meters and cubic feet N c. both kilos and pounds N d. barrels of 55 gallon capacity 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 2555: When hoisting personnel from a vessel, with the MODU cranes, the crane operator must assure that __________.
N a. the personnel carrier remains directly over the vessel N b. all personnel are inside the net type carrier Y c. the personnel carrier remains directly over water N d. he does not swing the load until it is above the landing area 2584: The grade C flammable liquid phenylethane is found in the Chemical Data Guide under the chemical name __________.
N a. ethyl cyanide Y b. ethylbenzene N c. ethyl acetate N d. muriatic ether 2631: In MODU construction, beam brackets are triangular plates that join the deck beam to a __________.
N a. bulkhead Y b. frame N c. stanchion N d. deck longitudinal 2655: Support of MODU side plating is provided primarily by transverse __________.
N a. beams N b. girders Y c. frames N d. bulkheads 2963: Which of the following statements about transmitting distress messages by radiotelephone is INCORRECT?
N a. If no answer is received on the designated distress frequencies, repeat the distress call on any frequency available. N b. Channel 16 (156.8) may be used for distress messages. Y c. It is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds duration. N d. Distress messages should first be transmitted on 2182 kHz. 3054: Your sailing drafts are: FWD 22'-04", AFT 23'-06" and the GM is 3.2 feet. What will be the angle of list if #3 starboard double bottom (capacity 97 tons, VCG 2.5 feet and 23 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° Y b. 3° N c. 7° N d. 11° 3077: The purpose of the inclining experiment on a MODU is to determine the __________.
Y a. lightweight and lightweight center of gravity location N b. position of the center of buoyancy N c. position of the metacenter N d. maximum load line 3161: The wooden plug fitted tightly in the vent of a damaged tank may prevent the tank from __________.
Y a. filling completely N b. developing free surfaces N c. developing free surface moments N d. collapsing 3178: Assuming that the recommended hatch loading sequence is followed, how many long tons of iron ore may be loaded through hatch No. 23 while using a single belt loader to arrive at a desired mean keel draft of 28'-00"? (Use the Guidance Manual for Loading M.V. GRAND HAVEN.)
N a. 2930 tons N b. 3110 tons N c. 3170 tons Y d. 3240 tons 3427: A semisubmersible, 200 feet in length between draft marks with the LCF 10 feet aft of amidships, records the following drafts: Port Forward 64'-09"; Port Aft 68'-09"; Starboard Forward 59'-09"; and Starboard Aft 63'-09". What is the trim?
N a. 8 feet by the stern Y b. 4 feet by the stern N c. 2 feet by the stern N d. 4 feet by the head 3644: When should distress flares and rockets be used?
N a. Immediately upon abandoning the vessel Y b. Only when there is a chance of their being seen by a rescue vessel N c. At one hour intervals N d. At half hour intervals 3806: A liferaft which has inflated bottom-up on the water __________.
Y a. should be righted by standing on the carbon dioxide cylinder, holding the righting straps and leaning backwards N b. should be righted by standing on the life line, holding the righting straps leaning backwards N c. will right itself when the canopy tube inflates N d. must be cleared of the buoyant equipment before it will right itself 4537: What is the weight in long tons of 180 barrels of 15 pound per gallon drilling mud?
N a. 522.67 long tons Y b. 50.63 long tons N c. 34.84 long tons N d. 3.38 long tons 5183: The DEEP DRILLER departs a fresh water port at a draft of 20.5 feet. What will be the draft in sea water?
N a. 18.2 feet N b. 19.4 feet Y c. 19.7 feet N d. 22.8 feet 5361: The COASTAL DRILLER, when underway was loaded as shown in Sample Load Form #1 (Rig Move). It is now preloaded at minimum air gap waiting for all settling to take place. The preload, weighing 7,191.7 kips, has LM 870,196 ft-kips and TM 2,158 ft-kips. What is the bow leg reaction?
Y a. 7,026 kips N b. 7,099 kips N c. 7,144 kips N d. 7,180 kips 5787: In storm conditions, with the wind and waves from the starboard bow of the DEEP DRILLER in 600 feet water depth, the offset is 8%. Completely slacking mooring lines 7 and 8 reduces the offset to __________.
N a. 6.5% Y b. 5.0% N c. 2.5% N d. 0.0% 5821: Why should you preload a mooring system above your precalculated operating mooring tensions?
Y a. This serves as a benchmark for increasing tensions in rough weather. N b. This allows you to determine existing bottom conditions. N c. This insures that the anchor cable is stretched out in a straight line. N d. This tests all the components of your mooring equipment. 5917: 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 6631: All portable fire extinguishers must be capable of being __________.
Y a. carried by hand to a fire N b. carried or rolled to a fire N c. recharged in the field N d. used on class "B" fires 7407: Which VHF channel should you avoid using as a working channel?
N a. 7A N b. 8 N c. 9 Y d. 16 7417: You receive a call from the U.S. Coast Guard addressed to all stations. The call begins with the words "Pan-Pan" (3 times). Which type of emergency signal would this be?
N a. Safety signal Y b. Urgency signal N c. Distress signal N d. Red alert signal 7631: At an angle of loll, the capsizing moment is __________.
N a. maximum N b. negative N c. positive Y d. zero 8061: When drilling from a MODU the weight in air of tubular goods on the racks is reduced when run into the drilled hole because of the effect of __________.
N a. drill string compensators N b. formation pressure Y c. buoyancy of the mud N d. vessel motion 8415: The three conditions which cause engine shutdown are overspeed, low lube oil pressure, and __________.
N a. high lube oil pressure N b. high jacket water pressure Y c. high jacket water temperature N d. low jacket water pressure 8505: The DEEP DRILLER, loaded as shown in the Sample Load Form #4 (Drilling), discharges a non-liquid load of 275.8 long tons from a position 130 feet above the keel, 40 feet forward of amidships, and 30 feet to port of the centerline. What is the improvement in KGL?
N a. 0.67 foot N b. 0.98 foot Y c. 1.15 feet N d. 2.06 feet 8688: Life floats must be equipped with __________. (small passenger vessel regulations)
N a. a sea anchor N b. a signal mirror N c. an EPIRB Y d. paddles 9193: Drinking salt water will __________.
N a. be safe if mixed with fresh water N b. prevent seasickness Y c. dehydrate you N d. protect against heat cramps 9411: When anchoring in an area with a soft bottom, the fluke angle of an anchor should be set at __________.
N a. 20° N b. 30° N c. 40° Y d. 50° 9481: The difference between the initial trim and the trim after loading is known as __________.
N a. trim Y b. change of trim N c. final trim N d. change of draft 9541: When the height of the metacenter is the same as the height of the center of gravity of a vessel, the upright equilibrium position is __________.
N a. stable Y b. neutral N c. unstable N d. negative