National Maritime Center Providing Credentials to Mariners Master TV to Master Less than 500 Gross Registered Tons Great Lakes and Inland (Sample Examination) Page 1 of 18
Choose the best answer to the following Multiple Choice Questions. 1. What is a system of reservoirs and connecting tubes in a gyro compass called? (A) The mercury ballistics o (B) The spider element o (C) The gyrotron o (D) The rotor 2. What are the required number and type of hand portable fire extinguishers for staterooms on cargo vessels? o (A) One C-I (B) None required o (C) One B-I o (D) One A-I 3. When anchoring, good practice requires 5 to 7 fathoms of chain for each fathom of depth. Which is TRUE when anchoring in deep water? o (A) Veer more chain for each fathom of depth o (B) Use the same ratio (C) Use less chain for each fathom of depth o (D) Use two anchors with the same ratio of chain 4. You are docking a vessel. Which statement is TRUE? o (A) You should approach the dock at a 90 angle o (B) You should go in with the current (C) You should go in against the current o (D) You should pass a mooring line to the dock and let the crew pull the vessel to 5. You have berthed in a port area with other tank vessels. What signal is displayed by a vessel to indicate it is transferring flammable or combustible liquid cargo? (A) A red light visible all around the horizon o (B) A green light visible all around the horizon o (C) An illuminated red and yellow caution flag o (D) A flashing yellow light Page 2 of 18
6. A tug placed at which location would have MINIMAL effect steering a large vessel? o (A) Attached by a tow line ahead of the vessel o (B) Secured on the vessel's quarter (C) Placed approximately amidships of the vessel o (D) Placed forward on either bow of the vessel 7. Where is the heel block located on a boom? o (A) Near the midships guy o (B) Near the spider band (C) At the base of the boom o (D) At the cargo hook 8. How is forty-five fathoms marked on the anchor chain? o (A) One turn of wire on the first stud from each side of the detachable link o (B) Two turns of wire on the second stud from each side of the detachable link (C) Three turns of wire on the third stud from each side of the detachable link o (D) Four turns of wire on the fourth stud from each side of the detachable link 9. What is the maximum length of time that distress flares are approved for? o (A) 1 and 1/2 years o (B) 2 years (C) 3 and 1/2 years o (D) 5 years 10. Which item is NOT required to be marked with the vessel's name? o (A) Life preserver o (B) Lifeboat oar (C) Hand-portable fire extinguisher o (D) Immersion suit Page 3 of 18
11. How should you signal the crane operator to stop in an emergency? o (A) Extend arm with the palm down and hold this position rigidly. o (B) Place clasped hands in front of your body. o (C) Place both fists in front of the body with the thumbs pointing outward. (D) Extend arm and move hand rapidly right and left with the palm down. 12. The signal man assisting the crane operator has his arm extended, his fingers closed, and his thumb pointing downward. This is the signal to. o (A) hoist the load o (B) lower the load (C) lower the boom o (D) raise the boom 13. What are the quadrantal spheres used for? o (A) to remove heeling error o (B) to remove deviation on the cardinal compass headings o (C) to compensate for induced magnetism in vertical soft iron (D) to remove deviation on the intercardinal headings 14. Which term describes damage to cargo caused by fumes or vapors from liquids, gases, or solids? o (A) Vaporization o (B) Oxidation o (C) Contamination (D) Tainting 15. The spin axis of a gyroscope tends to remain fixed in space in the direction in which it is started. How does this gyroscope become north seeking so that it can be used as a compass? o (A) The rotation of the Earth (Earth rate) automatically aligns the gyroscope with north, except for speed errors o (B) By taking advantage of the property of gyroscopic inertia (C) By mechanically or electrically applying forces to precess the gyroscope o (D) By starting the compass with the spin axis in a north/south position Page 4 of 18
16. 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 17. What is the purpose of the freeing ports on a vessel with solid bulwarks? o (A) Permit easy jettisoning of deck cargo in an emergency o (B) Lighten the above deck weight caused by a solid bulwark o (C) Prevent the formation of any unusual stress concentration points (D) Allow water which may be shipped on deck to flow off rapidly 18. When a magnetic compass is not in use for a prolonged period of time it should. o (A) be locked into a constant heading o (B) have the compensating magnets removed (C) be shielded from direct sunlight o (D) have any air bubbles replaced with nitrogen 19. 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 20. A vessel has been surveyed in a foreign port and found unseaworthy as a result of neglect. A seaman on this vessel is entitled to discharge and which of the following? o (A) One month's pay only o (B) Transportation to the port of engagement o (C) One month's pay or transportation to the nearest U.S. port, whichever is the least amount (D) One month's pay or transportation to the nearest U.S. port, whichever is the greater amount Page 5 of 18
21. A vessel in Great Lakes service shall carry anchors in accordance with standards established by which group? o (A) The Canadian Coast Guard (B) The American Bureau of Shipping o (C) The underwriters of the vessel o (D) The U.S. Coast Guard 22. How many fire axes should be carried by a 700 GT cargo vessel, navigating the Great Lakes? o (A) 4 (B) 6 o (C) 2 o (D) 8 23. What is the maximum weight the 30 ton capacity pedestal cranes shown in illustration D049DG can lift in the twin mode? o (A) 15 tons o (B) 30 tons (C) 60 tons o (D) 120 tons 24. Each crewmember has an assigned firefighting station. Where is this assignment listed? o (A) On the Certificate of Inspection (B) On the muster list o (C) In the shipping articles o (D) On the fire fighting plan 25. Shell plating is. o (A) synonymous with decking o (B) a hatch cover (C) the outer plating of a vessel o (D) the galvanizing on steel Page 6 of 18
26. You are docking a vessel starboard side to with the assistance of two tugs. You are attempting to hold the vessel off by operating both tugs at right angles to the vessel and at full power. Which statement is TRUE? o (A) The bow doesn't close the dock first o (B) Steerageway is never taken off (C) The ship has no headway at the time o (D) The bow closes the dock first 27. In the illustration D041DG below, what does symbol 3 represent? o (A) baseline o (B) forward perpendicular o (C) displacement (D) amidships 28. The lubber's line on a magnetic compass indicates. o (A) compass north o (B) magnetic north (C) the direction of the vessel's head o (D) a relative bearing taken with an azimuth circle 29. Given a dry bulb temperature of 78 F and wet bulb temperature of 66.5 F, what is the dew point? o (A) 47.0 F o (B) 51.5 F (C) 59.0 F o (D) 70.0 F 30. When selecting the fuel oil tanks for the "burn-out" of bunkers during a voyage consideration of all of the following must be taken with the EXCEPTION of. (A) flashpoint o (B) list o (C) trim o (D) stability Page 7 of 18
31. You are docking an oceangoing single-screw vessel under normal circumstances with a single tug. Which is the usual function of the tug? (A) To control the bow and is tied to the offshore bow o (B) To control the stern and is tied to the stern on the offshore side o (C) To push the ship bodily alongside and is tied to the offshore side on the stern o (D) To pull the vessel into the slip and is tied to the bow 32. Who must ensure that the emergency lighting and power systems on cargo vessels are operated at least weekly? (A) Master o (B) Deck officer assigned o (C) Chief Engineer o (D) Engineering officer assigned 33. On a vessel of 125,000 GT on an international voyage, how many international shore connection flange(s) is the vessel required to maintain onboard? (A) 1 o (B) 2 o (C) 3 o (D) 4 34. 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 35. What speed do most bow thrusters generally become ineffective? (A) Over 3 knots headway o (B) Over 1 knot sternway o (C) At any speed astern o (D) At any speed ahead Page 8 of 18
36. When may a seaman on a vessel engaged in foreign trade be paid before earning the wages? o (A) Wages up to fifty percent of the seaman's base wage maybe advanced upon proof of serious family illness. o (B) The advance of wages is at the discretion of the master; however, a seaman cannot be in an overpaid status at signoff. o (C) Wages equivalent to three days base wage may be advanced upon arrival in a foreign port. (D) The seaman may only draw an advance on earned wages. 37. For towing vessels over 100 gross tons that are permitted to maintain a two-watch system, what percentage of the deck crew must be able seamen? (A) 50% o (B) 65% o (C) 75% o (D) 100% 38. Which is a design modification of an anchor chain which prevents the chain from kinking and increases its strength? o (A) A detachable link o (B) The Kenter link o (C) The connecting link (D) The stud link 39. 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. 40. 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 Page 9 of 18
41. 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 42. Which defines the process of "Block stowage"? o (A) Separation cloths to separate different kinds of cargo o (B) To have the cargo on pallets (C) Stowing all the cargo for a port in the same area o (D) Using port marks on the cargo 43. The governor brake on a lifeboat winch shall be capable of controlling the speed of lowering a fully equipped lifeboat from a cargo ship at. o (A) not more than 90 feet per minute o (B) a safe speed only specified (C) not more than 120 feet per minute o (D) not less than 120 feet per minute 44. On what type of pump would you find an impeller? (A) Centrifugal o (B) Piston o (C) Vane o (D) Gear 45. Which describes how flanking rudders effect a vessel's heading when going astern? o (A) The tunnel affect of the water flow past opposing rudders o (B) The discharge current being channeled to impinge on the vessel's deadwood o (C) The water flow due to the vessel's movement through the water (D) The effect of the propeller flow on the rudders Page 10 of 18
46. A tug should not come alongside a tank vessel in way of its cargo tanks while it is loading grade A, B, or C cargo without the permission of the. o (A) the cognizant OCMI o (B) superintendent of the shoreside facility o (C) local fire department (D) person in charge of the transfer 47. Which term applies to the angle between the flukes and the shank of an anchor? o (A) The holding angle o (B) A fleet angle o (C) A shank angle (D) The fluke angle 48. In illustration D033DG below, what is a wooden deck installed on top of the plating lettered N known as? (A) ceiling o (B) furring o (C) spar decking o (D) flooring 49. During a SAR helicopter evacuation which of the following describes the proper donning of a rescue sling? o (A) The person sits in the sling with their hands clasped across the chest while facing the winch hook (B) The loop of the sling passes behind the back and under the arms while facing the winch hook o (C) The person steps onto the sling grasping the hoist line for support while facing away from the winch hook o (D) The loop of the sling passes across the chest and under the arms while facing away from the winch hook 50. A vessel's "quarter" is that section which is. o (A) abeam o (B) dead astern (C) on either side of the stern o (D) just aft of the bow Page 11 of 18
51. While assigned to a 150 GRT vessel, you are required to sign "foreign" articles on a voyage from New Orleans to which port? o (A) Houston, Texas o (B) Veracruz, Mexico (C) Cristobal Colon, Panama o (D) Kingston, Jamaica 52. You are the credentialed Master of a 199 GT uninspected towing vessel making a 500 mile coastwise trip. You carry a deck crew of six (6). Which statement is TRUE? o (A) Only the able seamen require Merchant Mariner Credentials. o (B) There must be 3 separate watches stood. o (C) There must be at least 5 able seamen among the deck crew. (D) None of the above 53. Which of the following is an inherent advantage possessed by a twin-screw vessel in opposition to a single-screw vessel? o (A) The drag effect will be cancelled out (B) The side forces will be cancelled out o (C) The vessel's speed will be increased o (D) The correct trim will be obtained more easily 54. Maritime Administration personnel may be allowed in the pilothouse and on the navigation bridge. Who is responsible for these personnel while in these areas of the vessel? o (A) The most senior person present from the Maritime Administration o (B) The Navigational Officer o (C) The Chief Officer (D) The Master of the vessel 55. 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 Page 12 of 18
56. What is a enclosure which will withstand ignition of a flammable gas, and which will prevent the transmission of any flame able to ignite a flammable gas, which may be present in the surrounding atmosphere called? o (A) gas-safe enclosure (B) explosion proof o (C) primary gas barrier o (D) a flame proof screen 57. Your vessel must moor port side to a berth limited by vessels ahead and astern using a single tug. You are stemming a slight current and there is a light breeze off the dock. Where should the tug make up to the vessel? o (A) The stern on a hawser o (B) The vessels waist (C) The bow o (D) The vessel's quarter 58. When the helm is turned on the navigation bridge, which of the listed actions will be the FIRST response in the steering room on a ship equipped with an electro-hydraulic steering gear? o (A) The six-way valve aligns itself with the running pump. o (B) The pumps go to full stroke. (C) The synchronous receiver turns, duplicating the helm motion. o (D) Both port and starboard cables are energized. 59. 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 60. By regulation, orange smoke distress signals will expire not more than how many months from the date of manufacture? o (A) 24 months o (B) 36 months (C) 42 months o (D) 54 months Page 13 of 18
61. You are operating a twin-screw vessel and lose your port engine. You continue to operate on your starboard engine only. Which action would you take to move your vessel ahead in a straight line? o (A) Surge the starboard engine. o (B) Compensate with left rudder. o (C) Rudder amidships - no compensation is necessary on a twin-screw vessel. (D) Compensate with right rudder. 62. After casting off moorings at a mooring buoy in calm weather, which action should you take? o (A) Go half ahead on the engines and pass upstream of the buoy o (B) Go full ahead on the engine(s) o (C) Go half ahead on the engines and put the rudder hard right (D) Back away a few lengths to clear the buoy and then go ahead on the engines 63. Dual electro-hydraulic steering units usually operate. o (A) with both pumps on line at the same time o (B) only when the rudder is moved amidships o (C) with the follow-up gear disconnected (D) with one pump on standby 64. What is required to be posted in the pilothouse of a vessel? o (A) Certificate of Inspection o (B) Officer's licenses o (C) Company Mission Statement (D) Muster List ("Station Bill") 65. Line throwing apparatus aboard ship must contain. o (A) two rockets, one of which shall be the buoyant type o (B) three rockets, one of which shall be the buoyant type (C) four rockets, two of which shall be the buoyant type o (D) five rockets, two of which shall be the buoyant type Page 14 of 18
66. Which item do you NOT have to provide for the Coast Guard representative at the time of a stability test? o o (A) General arrangement plans of decks; holds and inner bottoms. (B) Capacity plans showing the vertical and longitudinal centers of gravity of stowage spaces and tanks. (C) A stability letter. o (D) Tank sounding tables and draft mark locations. 67. How can the Coast Guard determine that a crew member is "able to understand any order spoken by the officers"? (A) Require a demonstration by the officer and the crew member o (B) Require that an interpreter be provided o (C) Require a written test o (D) All of the above 68. In moderate wind and current what should be the length of chain with a single anchor? o (A) 10 times the depth of the water in shallow water (B) 5 times the depth of the water in good holding ground o (C) 2 times the depth of the water in poor holding ground o (D) 8 times the depth of the water in deep water 69. What can be used to prevent a flammable atmosphere from occurring in a tank container? o (A) a combustion stabilizer (B) inert gas o (C) an oxidizer o (D) a vortex eliminator 70. Magnetic variation changes with a change in. (A) the vessel's position o (B) the vessel's heading o (C) seasons o (D) sea conditions Page 15 of 18
National Maritime Center Providing Credentials to Mariners D033DG 5/23/2016 Adapted for testing purposes only Further reproduction prohibited without permission Page 16 of 18
National Maritime Center Providing Credentials to Mariners D041DG 5/23/2016 Adapted for testing purposes only Further reproduction prohibited without permission Page 17 of 18
National Maritime Center Providing Credentials to Mariners D049DG 5/23/2016 Adapted for testing purposes only Further reproduction prohibited without permission Page 18 of 18