National Maritime Center Providing Credentials to Mariners (Sample Examination) Page 1 of 18
Choose the best answer to the following Multiple Choice Questions. 1. Which is the proper procedure to reeve a right-angle threefold purchase? o (A) Start with the right sheave bottom block o (B) Start with the left sheave bottom block o (C) Start with the left sheave top block (D) Start with the middle sheave top block 2. According to the Chemical Data Guide, the flash point for the grade B flammable liquid piperylene is. (A) -20 F o (B) 43 C o (C) not available o (D) 108 F 3. Which term defines "An electronic or electric device that indicates the rate of turn of a vessel,"? (A) Swing meter o (B) Gyro-compass o (C) Odometer o (D) Magnetic compass 4. Which color is the last shot of an anchor cable usually painted? (A) Red o (B) International orange o (C) White o (D) Yellow 5. How should cargo tank hatches be protected when the ullage opening is open and the tank NOT gas free? (A) With flame screens o (B) With pressure-vacuum relief valves o (C) With gooseneck vents o (D) With warning signs Page 2 of 18
6. Using a scope of five, determine how many shots of chain you should put out to anchor in 5 fathoms of water? o (A) 1 (B) 2 o (C) 3 o (D) 5 7. With an increase in temperature the volume of flammable and combustible liquids. o (A) remains constant (B) expands o (C) remains constant if pressure remains constant o (D) contracts 8. When is the effect of wind on exposed areas of the vessel most noticeable? o (A) When turning o (B) When going full ahead o (C) When going slow ahead (D) When backing 9. To determine the number of inflatable liferafts required on a vessel, you should check which document? o (A) Stability Letter o (B) SOLAS Certificate o (C) Load Line Certificate (D) Certificate of Inspection 10. In a tank vessel constructed in 1970, carrying grade A, B, C, or D liquid cargo, what is required to isolate cargo pumps from sources of vapor ignition? (A) gastight bulkheads o (B) general cargo spaces o (C) cofferdams o (D) passageways or living quarters Page 3 of 18
11. You are loading 465,000 barrels of cargo oil. At 0900 you find that you have loaded 207,000 barrels. At 1030 you find that you have loaded 223,000 barrels. If you continue loading at the same rate, you will finish at approximately. o (A) 2100 that night o (B) 0730 the next day (C) 0910 the next day o (D) 1215 the next day 12. When loading bulk liquid cargo, what is the FIRST action you should take if a cargo valve jammed open? o (A) Call the owner, operator, or terminal supervisor. (B) Order the dock man to shut down. o (C) Run out the vessel's or terminal's fire hose. o (D) Trip the pump relief valve. 13. You are on a large merchant vessel entering a U.S. port. There is a Pilot on board and he has the conn. Which statement is TRUE? o (A) The Pilot is solely responsible for the internal working of the ship. (B) The Master is responsible for the safe navigation of the ship and the Pilot is employed for his local knowledge. o (C) The Pilot is solely responsible for the safe maneuvering of the ship only if he is required to be on board by law. o (D) The Pilot becomes solely responsible for the safe navigation of the vessel only if the Master relinquishes the conn. 14. A precaution you should take before bunkering is to. o (A) plug the sounding pipes o (B) close the lids on the vents (C) plug the scuppers o (D) plug the vents Page 4 of 18
15. After splicing an eye in a piece of wire rope, why should the splice be parceled and served? o (A) To strengthen the line o (B) Makes the line more flexible (C) Preserving the wire and prevent hand injury o (D) Increase its efficiency 16. The Master must maintain the Oil Record Book on board for which duration? o (A) 1 month o (B) 12 months o (C) 24 months (D) 36 months 17. Sweat damage in a hatch full of canned goods in cartons will occur when which condition exists? o (A) When the air temperature is higher than the temperature of the cargo o (B) When the air temperature is lower than the temperature of the cargo (C) When the dew point is higher than the temperature of the cargo o (D) When the dew point is lower than the temperature of the cargo 18. You are using tackle number 4 as shown in illustration D029DG below to lift a weight. The hauling part of this tackle is bent to the weight hook (w) of tackle number 10. What is the mechanical advantage of this rig? o (A) 5 (B) 20 o (C) 9 o (D) 4 19. On an inspected vessel, which abbreviation refers to the horizontal distance between perpendiculars taken at the forward-most and the after-most points on the waterline at her deepest operating draft? (A) LBP o (B) LOA o (C) LLL o (D) LWL Page 5 of 18
20. If you are operating on the Inland Waters of the United States, which of the following may you discharge overboard? o (A) Bottles o (B) Dunnage o (C) Metal (D) None of the above 21. What is NOT a requirement of cargo piping installed in tank vessels carrying grade D or E cargo ONLY? o o (A) Flanged joints shall be used for pipe sizes exceeding 2 inches in diameter. (B) Connections at bulkheads must be made so that the plating does not form part of a flanged joint. (C) The cargo piping system shall be fixed. o (D) Piping through bunker spaces may be run through a pipe tunnel. 22. Which spaces are required to be segregated from cargo tanks carrying grades A, B, C, or D cargoes? o (A) Pump rooms o (B) Cofferdams o (C) Enclosed deck spaces (D) Navigation spaces 23. Grade E combustible liquids have a flash point of. (A) 150 F or above o (B) 80 F to 150 F o (C) 60 F to 100 F o (D) 90 F to 120 F 24. Which of the following is considered "discharge" as it applies to the pollution regulations? o (A) leaking o (B) spilling o (C) pumping (D) All of the above Page 6 of 18
25. Which lashing materials would be used in securing light vehicles aboard Ro-Ro vessels? (A) Webbing o (B) Chain lever or turnbuckle o (C) Chain o (D) None of the above 26. You are on watch and the Pilot has the conn. The Master has temporarily gone below. The Pilot orders a course change which you are certain will put the vessel into imminent danger. Which should be your initial response? (A) Countermand the order and immediately notify the Master o (B) Make an appropriate entry in the deck log concerning the Pilot's order o (C) Immediately sound a short ring on the general alarm o (D) Immediately call the Master and await further orders from him 27. What should be done immediately after putting down the stern ramp on a Ro-Ro vessel, prior to loading or discharging cargo? o (A) Turn on the red cargo light. (B) Raise/open the stern door. o (C) Call out the deck department for all hands. o (D) Turn on pumproom ventilation. 28. A nylon line is rated at 15,000 lbs. breaking strain. Using a safety factor of 5, what is the safe working load (SWL)? (A) 3,000 lbs. o (B) 5,000 lbs. o (C) 15,000 lbs. o (D) 65,000 lbs. 29. Where are remote readouts for oxygen concentration, pressure, and temperature of an inert gas system required to be located? o (A) Bridge and engine control consoles o (B) Main deck and engine control consoles (C) Cargo control and engine control consoles o (D) Bridge and tank(s) being inerted Page 7 of 18
30. Fuel oil tank vents are fitted with a screen which will stop. (A) flames on deck from entering the tank vent o (B) vapors from leaving the tank vent o (C) oil from flowing out of the tank vent o (D) air from entering the tank vent 31. Which item is designed to be a safety stopper that prevents the anchor cable from running free if the cable jumps the wildcat? o (A) The spill pipe o (B) The devil's claw (C) The riding pawl o (D) The buckler plate 32. Your vessel is taking on fuel when a small leak develops in the hose. You order the pumping stopped. Before you resume pumping, you should. o (A) notify the terminal superintendent o (B) repair the hose with a patch (C) replace the hose o (D) place a large drip pan under the leak and plug the scuppers 33. You are transferring a cargo of ethyl chloride and a small amount spills into the water around your vessel. What does the Chemical Data Guide indicate is the solubility of ethyl chloride in water? o (A) complete o (B) moderate o (C) negligible (D) slight 34. Which international body is responsible for drafting the convention prohibiting marine pollution (MARPOL)? o (A) The Maritime Advisory Council o (B) The International Association of Shipping o (C) The Association of Seafaring Nations (D) The International Maritime Organization Page 8 of 18
35. If your propeller is racing in rough weather, which action should you take? o (A) Stop your engine until the rough weather passes o (B) Ignore it, this is acceptable in rough weather o (C) Increase your engine speed (D) Decrease your engine speed 36. You may not serve as person-in-charge of oil transfer operations on more than one vessel at a time unless which condition is met? o (A) Not allowed under any circumstances o (B) The vessels are moored clear of all docks o (C) Radio communication is set up between the vessels (D) Is authorized by the Captain of the Port 37. Keeping the draft at or below the load line mark will insure that the vessel has which of the following? o (A) Normal rolling periods (B) Reserve buoyancy o (C) Adequate ballast o (D) Minimal displacement 38. Ice concentration is measured in tenths. What concentration range of ice corresponds to "Open Pack"? o (A) < 1 tenth o (B) 1-3 tenths (C) 4-6 tenths o (D) 7-8 tenths 39. What do pollution regulations require of each scupper and or drain that is located in an enclosed deck area? o (A) The scuppers must be wooden plugs (B) The scuppers shall have a mechanical means of closing o (C) The scuppers shall be a two-piece soft patch o (D) The scuppers must be a soft rubber plug Page 9 of 18
40. The only portable electrical equipment permitted in a compartment which is not gas free is a lamp that is. o (A) battery fed o (B) self-contained o (C) approved explosion proof (D) All of the above 41. How many months after its expiration date may a Coast Guard credential be renewed without retaking the complete exam? o (A) 1 month o (B) 6 months (C) 12 months o (D) 24 months 42. Which of the signals listed is required to be displayed at night while bunkering at a dock? o (A) One red light over a white light (B) One red light o (C) One red light over a yellow light o (D) Two red lights 43. Which U.S. agency assigns an official number to a vessel? o (A) Collector of Customs o (B) American Bureau of Shipping (C) Coast Guard o (D) Treasury Department 44. According to the Chemical Data Guide, which extinguishing agent is NOT recommended for use on a retinol fire? o (A) CO2 (B) Water spray o (C) Foam o (D) Dry chemical Page 10 of 18
45. You are heading into the sea during rough weather. What may happen if there is too much weight forward in your small boat? o (A) The craft will list severely o (B) The craft will broach o (C) The craft will rise rapidly over the wave (D) The craft may plunge into the wave 46. Static electricity may be built up by the. o (A) flow of petroleum through pipes o (B) spraying or splashing of petroleum o (C) settling of solids or water in petroleum (D) All of the above 47. The possibility of wake damage can be reduced by following which action? o (A) Passing close aboard to the moored vessel (B) Slow down when passing moored vessels o (C) Apply rudder in both port and starboard directions o (D) Alternate engine speeds 48. A sling is rigged on a piece of pipe weighing 1000 lbs. The angle between the sling legs is 140 and the legs are of equal length. What stress is exerted on each sling leg when the pipe is lifted? o (A) 1318 lbs. o (B) 1366 lbs. o (C) 1414 lbs. (D) 1462 lbs. 49. What is the period of validity of a Safety Management Certificate? (A) 60 months o (B) 48 months o (C) 42 months o (D) 36 months Page 11 of 18
50. What are tank vessels handling grade B liquids required to have their cargo pumps separated from all sources of vapor ignition by? o (A) empty cargo spaces o (B) cofferdams (C) gas tight bulkheads o (D) areas equipped with power ventilation 51. Which international body is responsible for drafting the convention prohibiting marine pollution (MARPOL)? o (A) Maritime Advisory Council o (B) Association of Seafaring Nations (C) International Maritime Organization o (D) International Association of Shipping 52. What is the name of the mark indicated by the letter F in illustration D003DG below? o (A) Fresh water load line o (B) Tropical load line (C) Winter load line o (D) Summer load line 53. When the period of beam seas equals the natural rolling period of a vessel, what will most likely occur? o (A) Excessive yawing (B) Excessive rolling o (C) Excessive pitching o (D) No change should be evident 54. What type of ventilation is required for pumprooms on tank vessels, carrying grade C liquid cargo, with machinery spaces below the freeboard deck? (A) power ventilation o (B) gooseneck vents and flame screens o (C) at least two ducts extending to the weather deck o (D) a vent header system Page 12 of 18
55. Every entry required to be made in the Official Logbook shall be signed. Who is required to sign the this logbook? (A) Master and Chief Mate or other member of the crew o (B) Purser, one of the Mates, and some other member of the crew o (C) Master only o (D) Mate on watch 56. Which agency must approve the Safety equipment on board inspected vessels? o (A) The Occupational Safety and Health Administration (OSHA) o (B) The Safety Standards Bureau (C) The U.S. Coast Guard o (D) The National Safety Council 57. Which should you check before letting the anchor go? o (A) The wildcat is disengaged o (B) The chain is clear o (C) The anchor is clear of obstructions (D) All of the above 58. Another name for coal naphtha that would appear on a dangerous cargo manifest is. o (A) middle oil (B) benzene o (C) toluene o (D) tar 59. Tank vessel inerting refers to. o (A) the introduction of inert gas into a cargo tank during cargo discharge to replace the volume of discharged cargo o (B) the introduction of inert gas into a tank with the object of reducing the oxygen content to below 8% by volume o (C) the introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volume (D) All of the above Page 13 of 18
60. To determine the number of portable fire extinguishers required on an inspected vessel, you should check which document? o (A) The Muster List ("Station Bill") (B) The Certificate of Inspection o (C) The Safety of Life at Sea Certificate o (D) The hot work permit 61. Most of your vessel's superstructure is forward. How will the vessel lie when drifting with no way on? o (A) With the wind from ahead o (B) With the wind off the starboard beam (C) With the wind from abaft the beam o (D) With the wind off the port beam 62. An icebreaker is displaying a flag hoist which consists of the code letters "WO" (Whiskey Oscar). What does this signal indicate? o (A) Icebreaker support is commencing o (B) The icebreaker is icebound (C) Icebreaker support is finished o (D) The icebreaker is beset 63. What is the minimum standard for making an eye splice in a wire to be used as cargo gear? (A) Make three tucks with full strands, remove half the wires from each strand, and make two more tucks. o (B) Make four tucks with each full strand. o (C) Make four tucks in each strand, cut away every other strand, and make two more tucks with each remaining strand. o (D) Make six tucks with each strand, removing a few wires from each strand as each additional tuck is made. 64. Which method requires prior approval to be used when cleaning up an oil spill? o (A) Suction equipment o (B) Skimmers o (C) Sorbent booms (D) Chemical agents Page 14 of 18
65. What is the period of validity of a Merchant Mariner Credential? (A) 5 years o (B) 1 year o (C) 3 years o (D) 2 years 66. Which document is NOT required by law to be posted aboard a vessel? o (A) Certificate of Inspection o (B) Muster List o (C) Officer's licenses (D) Official Crew List 67. In the United States, which organization sets the load line markings? o (A) IMO (B) American Bureau of Shipping o (C) Federal Maritime Board o (D) Coast Guard 68. What form of ice is of land origin? o (A) Spicule o (B) Floe (C) Bergy bit o (D) Shuga 69. Which statement about entry into a water ballast tank that has been sealed for a long time is TRUE? o (A) Sea water acts on the ship's metal and generates chlorine gas which may accumulate in poisonous quantities. (B) After ventilation and testing, and the tank is found safe for entry, someone should standby at the tank entrance while you are inside. o (C) A "buddy system" should be used where someone enters the tank with you. o (D) You should always wear a gas mask. Page 15 of 18
70. Which statement concerning a short splice is TRUE? (A) A short splice is stronger than two lines joined by a knot. o (B) It is used to temporarily join two lines together. o (C) A short splice decreases the diameter of the line. o (D) None of the above Page 16 of 18
National Maritime Center Providing Credentials to Mariners D003DG 5/20/2016 Adapted for testing purposes only Further reproduction prohibited without permission Page 17 of 18
National Maritime Center Providing Credentials to Mariners D029DG 5/23/2016 Adapted for testing purposes only Further reproduction prohibited without permission Page 18 of 18