National Maritime Center

Transcription

1 National Maritime Center Providing Credentials to Mariners (Sample Examination) Page 1 of 17

2 Choose the best answer to the following Multiple Choice Questions. 1. What is placed on the underside of an inflatable liferaft to help prevent it from being skidded by the wind or overturned? o (A) Sea anchor o (B) Strikes o (C) A keel (D) Water pockets 2. What is the MOST important consideration when determining how to fight an electrical fire? o (A) Maintaining electrical power (B) Danger of shock to personnel o (C) Whether the fire is in machinery or passenger spaces o (D) The amount of toxic fumes created by the extinguisher 3. The officer responsible for the sanitary condition of the engineering department is the. o (A) Master o (B) First Assistant o (C) Chief Mate (D) Chief Engineer 4. Which statement is TRUE concerning life preservers? o (A) Life preservers must always be worn with the same side facing outwards. (B) Kapok life preservers must have vinyl-covered pad inserts. o (C) Life preservers are not designed to turn a person's face clear of the water when unconscious. o (D) Buoyant vests may be substituted for life preservers. 5. Which statement is TRUE concerning the application of foam on an oil fire? o (A) It gives protection to fire fighting personnel against the heat of the fire. o (B) It should be used at the same time a solid stream of water is being applied. (C) It forms a smothering blanket on the surface of the oil. o (D) It cools the surface of the liquid. Page 2 of 17

3 6. Which statement about immersion suits is TRUE? o (A) The suit is flameproof and provides protection to the wearer while swimming through burning oil. o (B) The immersion suit seals in body heat and provides protection against hypoglycemia for weeks. o (C) The wearer of the suit is severely restricted and requires 1.5 times more time to climb a ladder than without the suit. (D) Prior to abandonment, the suit allows body movement such as walking, climbing a ladder and picking up small objects. 7. What is the BEST conductor of electricity? (A) Salt water o (B) Distilled water o (C) Fresh water o (D) Carbon dioxide 8. Normally, it is desirable to have screens on the vents of potable water tanks to. (A) stop insects from entering o (B) prevent backups o (C) prevent explosions o (D) filter the incoming air 9. The free surface correction depends upon the dimensions of the surface of the free liquid and the. o (A) location of the tank in the vessel o (B) volume of liquid in the tank o (C) height of the center of gravity of the vessel (D) displacement of the vessel 10. Which causes spontaneous combustion? (A) A chemical action within a substance o (B) The conduction of heat through a wall of material to the substance o (C) An outside heat source heating a substance until it ignites o (D) All of the above Page 3 of 17

4 11. In a fixed CO2 fire extinguishing system where pressure from pilot cylinders is used to release the CO2 from the main bank of 20 cylinders, what is the minimum number of required pilot cylinders? (A) 2 o (B) 3 o (C) 4 o (D) A combination or all-purpose nozzle produces. o (A) a solid stream and foam o (B) a solid stream only (C) a solid stream and fog o (D) low-velocity fog only 13. The lights on the outside of the canopy of an inflatable liferaft operate. o (A) by a switch at the light o (B) by a light sensor o (C) by turning the globe clockwise (D) automatically when the raft is inflated 14. Which is the flammable range of Bunker C mixed with air? o (A) 0% to 1% by volume (B) 1% to 5% by volume o (C) 5% to 10% by volume o (D) 10% to 20% by volume 15. The lights on the outside of the canopy on an inflatable life raft operate. o (A) by a switch at each light o (B) by a light sensor o (C) by turning the globe clockwise (D) automatically when the raft is inflated Page 4 of 17

5 16. The difference between the height of the metacenter and the metacentric height is known as. (A) height of the center of gravity o (B) metacentric radius o (C) height of the center of buoyancy o (D) righting arm 17. You are on watch at sea on course 090 T. A man falls overboard on your starboard side. You immediately start a Williamson Turn. Which action is NOT a part of a Williamson Turn? o (A) Shift the helm to left full rudder. (B) Stop the engines until clear of the man. o (C) Continue with left rudder until on course 270 T. o (D) Come right full rudder until the vessel heads 150 T. 18. Hand holds or straps on the underside of an inflatable liferaft are provided. (A) to right the raft if it capsizes o (B) to hang the raft for drying o (C) for crewmen to hang on to o (D) to carry the raft around on deck 19. A thrust block is designed to. o (A) absorb the shock of wave pressure at the bow (B) transmit the thrust of the propeller to the vessel o (C) transmit the thrust of the engine to the propeller o (D) be placed between the engines and the foundation to absorb the vibration 20. During fueling, all doors, hatches, and ports. o (A) should be opened o (B) to windward should be opened and the ones to leeward should be closed (C) should be closed o (D) to leeward should be opened and the ones to windward should be closed Page 5 of 17

6 21. You are at sea and have received a General Emergency message announcing the outbreak of war in Europe. You are directed to comply with the instructions in NGA (NIMA) PUB 117, Chapter Eight. Which statement is TRUE? o (A) You should only enter a port in the danger zone during hours of darkness. o (B) If on a coastwise voyage along the east coast of the U.S., you should put into the nearest port. o (C) When over 200 miles from a port in the danger zone, you should not darken ship. (D) You should attempt to submit an AMVER report to NSA. 22. When fighting fires in spaces containing bottles of LPG (liquefied petroleum gas), which is the most prudent action to take? o (A) See that the valves on all LPG bottles are closed (B) Cool the bottles or remove them from the fire area o (C) Attempt to isolate the fire from the LPG o (D) Place insulating material over the bottles 23. Which of the following statements is true concerning the control activators, i.e., pull-handles, pushbuttons or levers, for a space protected by a CO2 fixed fire extinguishing system? o (A) Only one control activator is required for discharge piping systems designed without a stop valve. o (B) An alarm must sound for at least 20 seconds before CO2 is released into a space that is likely to be occupied. o (C) Two control activators are required when a stop valve is installed in the main discharge line to a space. (D) All of the above 24. Many vessels are provided with flume tanks, which also have a dump tank located under the flume tanks. In the event the ship is damaged, you could dump the flume tanks into the dump tank which would. o (A) reduce the free surface effect and raise the KG o (B) not have any effect on free surface and lower the KG o (C) not have any effect on free surface and raise the KG (D) reduce the free surface effect and lower the KG Page 6 of 17

7 25. You are approaching a ship that is broken down and are preparing to take her in tow. BEFORE positioning your vessel to pass the towline, which action should you take? o (A) Secure the bitter end of the towing hawser to prevent loss if the tow is slipped o (B) Install chafing gear on the towline (C) Compare the rate of drift between the ships o (D) Have traveling lizards rigged to guide the towline while it is paid-out 26. Which precaution should be taken when testing a line throwing gun? (A) Never remove the line from the rocket. o (B) Fire it at an angle of approximately 90 degrees to the horizon. o (C) Wear asbestos gloves. o (D) All of the above 27. When personnel are lifted by a helicopter from an inflatable liferaft, what should the personnel on the raft do? o (A) Inflate the floor of the raft to provide for additional stability o (B) Take in the sea anchor to prevent fouling of the rescue sling (C) Deflate the floor of the raft to reduce the danger of capsizing o (D) Remove their lifejackets to prepare for the transfer 28. How should signal flares be used after you have abandoned ship and are adrift in a liferaft? o (A) Immediately use all the signals at once. (B) Use them only when you are aware of a ship or plane in the area. o (C) Employ a signal every hour after abandoning ship until they are gone. o (D) Use all the signals during the first night. 29. A foam-type portable fire extinguisher would be most useful in combating which type of fire? (A) A fire from flammable liquids o (B) A fire from combustible metallic solids o (C) A fire in a piece of electrical equipment o (D) A fire in solid materials such as wood or bales of fiber Page 7 of 17

8 30. Lifesaving regulations in Subchapter W require that a fire drill include which of the following? o (A) Starting the fire pumps o (B) Checking arrangements for abandon ship o (C) Checking the operation of watertight doors (D) All of the above 31. The external flotation bladder of an immersion suit should be inflated. o (A) before entry into the water o (B) only after four hours in the water (C) upon entry into the water o (D) only after two hours in the water 32. Which term defines the minimum concentration of a vapor in air which can form a mixture that ignites and burns? (A) lower flammable limit (LFL) o (B) Flash point o (C) Threshold limit value (TLV) o (D) Auto-ignition point 33. Your vessel is on a voyage from Ogdensburg, NY, to Chicago, IL, via the Great Lakes. The date is October 3 of the current year. If your vessel is subject to the load line requirements, using illustration D031DG below, to which of her marks should she be loaded? (A) Fresh water - Intermediate o (B) Fresh water - Winter o (C) Salt water - Winter o (D) Salt water - Intermediate 34. A weight of 1,000 short tons is equivalent to. o (A) 2,240 long tons (B) 2,000 kips o (C) 1,500 foot-pounds o (D) 2,000 pounds Page 8 of 17

9 35. Who has the exclusive use of the radiotelephone as stated in the "Vessel Bridge-to-Bridge Radiotelephone Act"? o (A) a person designated by the Master o (B) the Master or person in charge of the vessel o (C) a person on board to pilot the vessel (D) All of the above 36. If you are unable to stop a diesel engine by any other means, you should. o (A) secure the jacket water (B) discharge a CO2 extinguisher in the air inlet o (C) pull off the distributor cap o (D) secure the starting air supply valve 37. The type of welding employed in shipyards is primarily. (A) electric arc o (B) pressure welding o (C) brazing o (D) thermite welding 38. What should you do, if help has not arrived in hours, after having abandoned your vessel in a survival craft? o (A) take a vote on the direction in which to go o (B) go in one direction until the fuel runs out (C) shutdown the engines and put out the sea anchor o (D) plot course for the nearest land 39. You must shore up the collision bulkhead due to solid flooding forward. The bulkhead approximates an inverted triangle. The center of pressure of the shores on the bulkhead should be located. (A) approximately halfway up the bulkhead o (B) at the bottom of the bulkhead o (C) evenly over the surface of the bulkhead o (D) approximately two-thirds of the way up the bulkhead Page 9 of 17

10 40. According to the Lifesaving regulations in Subchapter W, fire and abandon ship drills must be held within 24 hours of leaving port if the percentage of the crew that has not participated in drills aboard that particular vessel in the prior month exceeds which percentage? o (A) 5% o (B) 10% (C) 25% o (D) 40% 41. Your vessel has grounded on a bar. What should you do? o (A) If you cannot get clear immediately, lighten the ship by pumping all ballast overboard. (B) Switch to the high suction for condenser circulating water, if it is submerged. o (C) Run the engine full astern to keep from being set further onto the bar. o (D) All of the above 42. A fire in a pile of canvas is classified as class. (A) A o (B) B o (C) C o (D) D 43. An upright vessel has negative GM. GM becomes positive at the angle of loll because the. o (A) underwater volume of the hull is increased o (B) free surface effects are reduced due to pocketing (C) effective beam is increased causing BM to increase o (D) KG is reduced as the vessel seeks the angle of loll 44. Traditionally, the signal for fire aboard ship is. o (A) 1 short blast on the whistle o (B) alternating short and long blasts on the ship's whistle o (C) more than 6 short blasts and 1 long blast on the whistle, and the same signal on the general alarm (D) continuous sounding of the ship's whistle and the general alarm for at least 10 seconds Page 10 of 17

11 45. When communicating on the radiotelephone using plain English, what procedure word indicates the end of my transmission and that a response is necessary? (A) Over o (B) Out o (C) Wilco o (D) Roger 46. Approximately how far could a straight stream of water reach if the fire hose pressure is reduced to 60 PSI? o (A) 150 feet (B) 50 feet o (C) 100 feet o (D) 200 feet 47. When abandoning ship and jumping into the water from a substantial height without a life jacket, you should. (A) jump feet first, covering your nose and mouth with one hand and grasping the opposing upper arm with the other o (B) jump feet first, holding your knees to your chest o (C) hold your arms firmly at your sides and jump feet first o (D) dive head first, using your hands to break the surface of the water 48. A situation has occurred in which your vessel must be towed. When the towing vessel passes the towing line to you, where should you secure the line? o (A) At the stern o (B) To the base of the foremast (C) To the forwardmost bitts o (D) To the forward part of the deckhouse 49. The vertical motion of a floating vessel in which the entire hull is lifted by the force of the sea is known as. (A) heave o (B) pitch o (C) surge o (D) sway Page 11 of 17

12 50. You are on watch and see a man fall overboard. Which man overboard turn should NOT be used in this situation? (A) Scharnow o (B) Williamson o (C) Racetrack o (D) Single turn 51. What is NOT a function of the steam drum of a marine water-tube boiler? o (A) Receives saturated steam from the generating tubes o (B) Serves as a reservoir of boiler feed water (C) Collects steam exhausted from the turbines o (D) Holds internal fittings for separation of moisture from steam 52. Which weld fault can only be detected by a method that examines the internal structure of a weld? o (A) Overlap (B) Lack of penetration o (C) Undercut o (D) Lack of reinforcement 53. Which is the lifesaving signal for, "This is the best place to land"? o (A) Orange smoke signal o (B) Red star rocket (C) Green star rocket o (D) Horizontal motion of a flag 54. How are automatic fire dampers in ventilation systems operated? o (A) Heat or smoke detectors activate the dampers o (B) By the use of CO2 system pressure switches o (C) Remotely operated valves to control the damper (D) Fusible links that melt and release the damper Page 12 of 17

13 55. Horizontal fore or aft motion of a vessel is known as. o (A) pitch o (B) roll o (C) sway (D) surge 56. A spark arrestor. o (A) keeps sparks from falling into an open tank o (B) grounds static electricity (C) prevents sparks from getting out of an engine's exhaust system o (D) secures covers on ullage openings 57. How should the letter "W" be pronounced when spoken on the radiotelephone? o (A) DUB A U o (B) WI NE (C) WISS KEY o (D) WOO LF 58. A man who is conscious has fallen overboard is being picked up by a lifeboat. In a mild breeze how should the the boat should approach the person in the water? o (A) With the wind ahead and the victim just off the bow (B) With the wind just off the bow and the victim to leeward o (C) With the wind just off the bow and the victim to windward o (D) With the wind astern and the victim just off the bow 59. You are tending the lifeline of a man who entered a compartment using a breathing apparatus. How many tugs on the lifeline indicate the man should back out? o (A) 1 o (B) 2 (C) 3 o (D) 4 Page 13 of 17

14 60. The center of gravity of a freely swinging load suspended from a pedestal crane acts as if it were located at the. (A) counterweight o (B) longitudinal centerline o (C) point of suspension o (D) pedestal 61. Which visual distress signal is acceptable for daylight use only? o (A) Red aerial pyrotechnic flare (B) Hand-held orange smoke distress flare o (C) Hand-held red flare o (D) Self-contained rocket-propelled parachute red flare 62. You are on a ship that has broken down and are preparing to be taken in tow. You will use your anchor cable as part of the towline. Which statement is TRUE? o (A) The anchor cable should be veered enough to allow the towline connection to be just forward of your bow. o (B) The anchor cable should be veered enough to allow the towline connection to be immediately astern of the towing vessel. o (C) The anchor cable should be led out through a chock, if possible, to avoid a sharp nip at the hawsepipe lip. (D) The strain of the tow is taken by the riding pawl, chain stopper, and anchor windlass brake. 63. Which of the following would be of immediate concern after discovering a large fire in the ship's galley? o (A) An adjacent storeroom, marked "Stewards Stores" (B) A storeroom directly above, containing combustible fluids o (C) An adjacent storeroom, containing spare parts o (D) An adjacent storeroom, containing mattresses and linen Page 14 of 17

15 64. One major disadvantage of a low-speed diesel as compared to a steam main-propulsion system is. o (A) the extra weight required for the diesel reduction gearing (B) a minimum speed for the engines that limits the minimum speed of the vessel o (C) the low efficiency of the system when a controllable pitch propeller is used o (D) the higher fuel consumption per SHP 65. Which of the following defines "Rolling Period"? o (A) the time it takes the vessel to make a complete roll such as from port to starboard and return to level (B) the time it takes the vessel to make a complete roll such as from port to starboard and back to port o o (C) the time it takes the vessel to make a complete roll such as from port and return to level (D) the time it takes the vessel to make a complete roll such as from level to starboard and return to port 66. What is NOT a function of the steam drum of a marine water-tube boiler? o (A) Serves as a reservoir of boiler feedwater o (B) Holds internal fittings for separation of moisture from steam o (C) Receives saturated steam from the generating tubes (D) Collects steam exhausted from the turbines 67. The upward slope of a vessels bottom from the keel to the bilge is called. o (A) camber (B) rise of bottom o (C) rake o (D) sheer 68. If, for any reason, it is necessary to abandon ship while far out at sea, it is important that the crew members should. o (A) separate from each other as this will increase the chances of being rescued o (B) get away from the area because sharks will be attracted to the vessel (C) remain together in the area because rescuers will start searching at the vessel's last known position o (D) immediately head for the nearest land Page 15 of 17

16 69. The brickwork surrounding the firebox of a boiler is known as. o (A) fire plate (B) refractory o (C) the screen wall o (D) the waterwall 70. Which operation should be done when launching an inflatable liferaft by hand? (A) Make sure the operating cord is secured to the vessel before throwing it over the side. o (B) Open the liferaft casing. o (C) Turn the valve on the CO2 cylinder to start inflation. o (D) After inflation, detach operating cord from liferaft. Page 16 of 17

17 National Maritime Center Providing Credentials to Mariners D031DG 5/23/2016 Adapted for testing purposes only Further reproduction prohibited without permission Page 17 of 17