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.
24: Which single-letter sound signal may be made only in compliance with the International Rules of the Road?
Y a. D N b. F N c. Q N d. U 37: What is the generally accepted method of determining whether the atmosphere within a cargo tank is explosive, too rich, or too lean to support combustion?
N a. Use the open flame test on a small sample that has been taken from the tank. N b. Send a gas sample ashore for laboratory analysis. N c. Enter the tank with an oxygen analyzer. Y d. Use an explosimeter. 50: What is not usually a concern when loading a single-hulled tanker?
N a. Bending moments Y b. Initial stability N c. Draft N d. Trim 127: Before welding in a tank that has carried petroleum products, the tank must be certified by __________.
N a. the Coast Guard N b. the American Bureau of Shipping N c. the shipyard fire department Y d. a certified marine chemist 173: While adrift in an inflatable liferaft in hot, tropical weather __________.
N a. the canopy should be deflated so that it will not block cooling breezes N b. the pressure valve may be periodically opened to prevent excessive air pressure Y c. deflating the floor panels may help to cool personnel N d. the entrance curtains should never be opened 297: Which information is NOT required to be posted in or near the wheelhouse?
N a. Stopping time and distance from full speed while maintaining course with minimum rudder Y b. A diagram of advance and transfer for turns of 30°, 60°, 90° and 120° at full speed with maximum rudder and constant power N c. For vessels with a fixed propeller, a table of shaft RPMs for a representative range of speeds N d. Operating instructions for change-over procedures for remote steering gear systems 401: On a vessel of 12,000 tons displacement, what is the reduction in metacentric height due to free surface when a tank 60 feet long and 60 feet wide is partially filled with water?
N a. 2.30 feet N b. 2.43 feet N c. 2.48 feet Y d. 2.57 feet 457: According to the "Vessel Bridge-to-Bridge Radiotelephone Act", your radiotelephone log must contain __________.
N a. a record of all routine calls N b. a record of your transmissions only N c. the home address of the vessel's Master or owner Y d. a summary of all distress calls and messages 459: What is the minimum number of people required to safely handle a 1-1/2 inch fire hose?
N a. 1 Y b. 2 N c. 3 N d. 4 473: Each small passenger vessel that operates on the high seas, or beyond 3 miles from the coastline of the Great Lakes must have a Category 1 406 MHz EPIRB that __________.
N a. is in good operating condition and is stowed near its charger Y b. will float free and clear of a sinking vessel and automatically activate N c. is protected against all physical hazards N d. All of the above 855: The term, "cargo tank length", as used in part 157 of the Pollution Regulations, means the __________.
N a. length of any individual cargo space, from bulkhead to bulkhead N b. greatest distance between two opposite cargo tank bulkheads N c. diagonal measurement of a cargo tank Y d. length from the forward bulkhead of the forwardmost cargo tanks to the after bulkhead of the aftermost cargo tanks 1168: What is the maximum oxygen content below which flaming combustion will no longer occur?
N a. 1% N b. 10% Y c. 15% N d. 21% 1324: A hydrostatic release mechanism for a liferaft __________.
N a. must be wet before it will release N b. should be kept in a watertight cover except in an emergency N c. will inflate the raft in its cradle if operated manually Y d. must be submerged to a certain depth to release automatically 1402: When using carbon dioxide to fight a fire on a bulkhead, the CO2 should be applied __________.
Y a. first to the bottom of the flaming area, sweeping from side to side, and following the flames upward N b. in a circular motion from the middle of the bulkhead outward N c. to the top of the flaming area, sweeping from side to side, and working toward the bottom N d. in an up-and-down motion from one side of the bulkhead to the other 1922: BOTH INTERNATIONAL AND INLAND A sailing vessel shall not impede the safe passage of a __________.
Y a. power-driven vessel following a traffic lane N b. pilot vessel enroute to a pilot station N c. law enforcement vessel N d. All of the above 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 2104: Use the material in Section 1, the blue pages, of the Stability Data Reference Book. If the KG is 25.2 feet, and the drafts are: FWD 27'-11", AFT 28'-09"; at what angle will the vessel lose positive stability?
Y a. 54° N b. 59° N c. 65° N d. 71° 2155: When sailing with the wind aft, a vessel may carry sails on both sides at the same time. The sails are __________.
Y a. wing and wing N b. luffed N c. reefed N d. cringled 2279: According to the Chemical Data Guide, when burning, the grade B flammable liquid, carbon disulfide produces __________.
N a. phosgene gas N b. sulfuric acid gas Y c. sulfur dioxide gas N d. carbon tetrachloride 2363: Use the material in Section 1, the blue pages, of the Stability Data Reference Book. If the KG is 22.0 feet, and the drafts are: FWD 23'-06", AFT 24'-03"; at what angle will the vessel lose positive stability?
N a. 76° N b. 84° N c. 89° Y d. 98° 2489: According to the Chemical Data Guide, which extinguishing agent should be used on a petrolatum fire in an open area?
N a. CO2 N b. Dry chemical N c. Monoxide powders Y d. Foam 2531: What is the fundamental purpose for imposing radio silence?
N a. To ensure that interference to proprietary communications is minimized N b. To ensure that only voice communications can be effected on the distress frequency or channel N c. To ensure that a distressed vessel will have a "window" twice each hour for transmitting routine messages Y d. To ensure that interference on a particular frequency or channel to communications concerning emergency traffic is minimized 2546: Your vessel's drafts are: FWD 24'-07", AFT 25'-09"; and the KG is 24.0 feet. What is the righting moment when the vessel is inclined to 15°? (Use the selected stability curves in Section 1, the blue pages, of the Stability Data Reference Book)
N a. 5,202 foot-tons Y b. 8,666 foot-tons N c. 10,876 foot-tons N d. 11,424 foot-tons 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 2597: Reinforcing frames attached to a bulkhead on a MODU are called __________.
N a. side longitudinals N b. intercostals Y c. stiffeners N d. brackets 2599: Oil fires are best extinguished by __________.
Y a. cutting off the supply of oxygen N b. removing the fuel N c. cooling below the ignition temperature N d. spraying with water 2682: The purpose of fuses in electric wiring is to __________.
N a. allow for cutting out branch circuits Y b. prevent overloading the circuits N c. reduce voltage to the branch circuits N d. permit the use of smaller wiring for lighting circuits 3009: Which type of ventilation is required for enclosed spaces containing gasoline, machinery, or fuel tanks? (small passenger vessel regulations)
Y a. Natural supply and mechanical exhaust N b. Mechanical supply and natural exhaust N c. Mechanical supply and mechanical exhaust N d. Natural supply and natural exhaust 3123: You are monitoring VHF Channel 16 when you receive a call to your vessel, TEXAS PRIDE. What is the proper way to answer this call?
N a. "This is TEXAS PRIDE. Pick a channel." N b. "This is TEXAS PRIDE on Channel 16. Come back." Y c. "This is TEXAS PRIDE, WSR 1234, reply Channel 10." N d. "Please stand by. We're busy right now." 3160: Fixed ballast, if used, may be __________. (small passenger vessel regulations)
N a. discharged or moved at any time Y b. moved temporarily for examination or repair of the vessel, when done under the supervision of an inspector N c. moved under the supervision of the owner, Master or shipyard N d. moved under any condition except extreme emergency 3208: Water pockets on the underside of an inflatable liferaft are for __________.
N a. catching rain water Y b. stability N c. easy drainage N d. maneuverability 3210: On a small passenger vessel, 58 feet in length, carrying 52 passengers the fire pump shall have a minimum pumping capacity of __________.
N a. 10 gallons per minute N b. 25 gallons per minute Y c. 50 gallons per minute N d. 100 gallons per minute 3390: Non-required lifesaving equipment carried as additional equipment aboard small passenger vessels __________.
N a. must be removed when carrying passengers Y b. must be approved by the Commandant N c. may be substituted for not more than 5% of the required lifejackets N d. may be carried regardless of approval or condition, if in excess of required lifesaving equipment 3414: A rigid lifesaving device designed to support survivors in the water is a __________.
N a. rigid liferaft Y b. life float N c. inflatable liferaft N d. survival capsule 3451: As shown, number 1 operates the __________. (D011SA )
Y a. Fleming gear N b. McCluny hook N c. sea painter N d. releasing gear 3526: A message by flashing light consists of the call, the text, the ending, and the __________.
Y a. identity N b. time of origin N c. reply N d. procedure code 3581: The DEEP DRILLER, at a draft of 58 feet, has VM of 900,000 ft-tons, and FSMT of 20,000 ft-tons. What is the KGT?
Y a. 51.6 feet N b. 52.3 feet N c. 53.8 feet N d. 55.0 feet 3683: While drilling loaded as shown in Sample Load Form #4 (Drilling), the DEEP DRILLER suffers a sudden unexpected starboard and aft inclination. The wind and waves are light. What might have caused the inclination?
N a. Mooring lines 6 and 7 have failed. Y b. The drilling crew has dumped the mud. N c. The drill string has broken. N d. Ballast tanks have equalized into tank 10S. 3695: In storm conditions, when the environmental conditions are such that the DEEP DRILLER has disconnected the marine riser, the two leeward mooring lines should be __________.
N a. tightened N b. slacked slightly Y c. completely slacked N d. adjusted to give the same line tensions as the windward lines 3731: If the DEEP DRILLER is damaged, the unit is designed to avoid downflooding in wind speeds up to __________.
Y a. 50 knots N b. 70 knots N c. 90 knots N d. 100 knots 3771: What is the decrease in longitudinal moments for the Deep Driller if 2.0 feet of ballast is transferred from 1S to 10P?
N a. 15,265 ft-tons Y b. 14,609 ft-tons N c. 7,293 ft-tons N d. 5,174 ft-tons 3966: In the illustration shown, the righting strap is shown as item number __________. (D014SA )
N a. 8 N b. 9 N c. 12 Y d. 16 4169: The color of the signal flares sent up by a submarine about to surface from periscope depth is __________.
N a. green N b. yellow Y c. white N d. red 4362: The free surface effects of a partially full tank in a vessel increase with the __________.
Y a. surface area of the fluid in the tank N b. displacement volume of the vessel N c. draft of the vessel N d. height of the tank above the keel 4623: On the COASTAL DRILLER, the bilge discharge is normally through the __________.
Y a. overboard discharge N b. dump valves N c. skimmer tank N d. sump valves 5197: The DEEP DRILLER, at a draft of 60 feet, has VM of 942,120 ft-tons, and FSML of 36,235 ft-tons. What is the KGL?
N a. 52.0 feet N b. 53.0 feet Y c. 54.0 feet N d. 55.0 feet 5451: While drilling loaded as shown in Sample Load Form #4 (Drilling), the DEEP DRILLER suffers a sudden unexpected inclination to starboard and aft. Strong wind and high waves are on the port bow. Among the possible causes, you should consider __________.
N a. failure of mooring lines 5 or 6 Y b. failure of mooring lines 1 or 2 N c. leak in ballast tank 9P N d. ballast tanks equalizing into tank 10S 5521: Prior to magnetic particle inspection of anchor chain, the chain should be __________.
N a. degaussed N b. demagnetized N c. soaked Y d. sandblasted 5575: Increasing the area of the anchor flukes will __________.
Y a. increase holding power N b. decrease holding power N c. make penetration more complete N d. not effect holding power 5795: What is the length of the catenary when the DEEP DRILLER is anchored in 600 feet of water and the anchor line tension is 170 kips?
N a. 891 feet N b. 1348 feet Y c. 1493 feet N d. 1657 feet 5825: The tension on an anchor cable increases so that the angle of the catenary to the seabed at the anchor reaches 10 degrees. How will this affect the anchor in sandy soil?
N a. It will have no effect. N b. It will increase the holding power. Y c. It will reduce the holding power. N d. It will cause the anchor to snag. 6035: On a MODU, watertight doors should be operated __________.
N a. during abandon drill Y b. during fire drill N c. weekly N d. when the rig is being moved 7032: Overspeed of the diesel engine driving an electric generator could cause __________.
N a. low voltage trip N b. reverse power trip Y c. damage to windings N d. excessive exhaust temperatures 9153: The two factors which make underwater hull repair of a MODU difficult are accessibility and the __________.
N a. availability of tools N b. shape of the hull Y c. pressure exerted by the water N d. threat of progressive flooding 9185: The external flotation bladder of an immersion suit should be inflated __________.
N a. only after two hours in the water N b. only after four hours in the water N c. before entry into the water Y d. upon entry into the water 9267: Lifeboat winches on a MODU are required to be inspected and an entry made in the logbook. What should this entry include?
N a. The time required to lower a lifeboat N b. The time required to raise a lifeboat Y c. The date of inspection and condition of the winch N d. All of the above 9317: Which statement is CORRECT with respect to inserting an airway tube?
Y a. Only a trained person should attempt to insert an airway tube. N b. A size 2 airway tube is the correct size for an adult. N c. The airway tube will not damage the victim's throat. N d. Inserting the airway tube will prevent vomiting. 9385: When personnel are lifted by a helicopter from an inflatable liferaft, the personnel on the raft should __________.
Y a. deflate the floor of the raft to reduce the danger of the raft overturning N b. inflate the floor of the raft to provide for additional stability N c. remove their life preservers to prepare for the transfer N d. take in the sea anchor to prevent fouling of the rescue sling 9501: Stability is determined principally by the location of the point of application of two forces: the downward-acting gravity force and the __________.
N a. upward-acting weight force N b. downward-acting weight force Y c. upward-acting buoyant force N d. environmental force 9511: In the absence of external forces, the center of buoyancy of an inclined vessel is vertically aligned directly below the __________.
Y a. center of gravity N b. amidships station N c. center of flotation N d. geometric center of the waterplane area