Naval Architecture – MEO CLASS 4 WRITTEN PAPER

 31. In ship construction, a large number of  watertight bulkheads results in

1. increased capacity to set flooding boundaries
2. decreased capacity to set flooding boundaries
3. reduced compartmentation
4. greater deck load capacity

ANS.: A

32. The penetration of a watertight bulkheads and watertight decks by rigid nonmetallic piping is prohibited except when
    1. using an acceptable metallic fitting, welded or otherwise is attached to the bulkhead or deck by an acceptable method
    2. the rigid nonmetallic plastic pipe is at least of schedule 160 and a metallic shut off valve is provided adjacent to the through deck or bulkhead fitting
    3. metallic shut off valves are welded to nonmetallic hull materials
    4. two non-remotely operated metallic valves are installed on either side of the deck or bulkhead regardless of accessibility

ANS.: A

33. The potential weakest part of the anchor chain would be the
    1. stud link
    2. solid link
    3. fluke link
    4. detachable link

ANS.: D

34. The purpose of the vessel inclining experiment is to 
    1. determine the location of the metacenter
    2. determine the lightweight center of gravity location
    3. verify the hydrostatic data
    4. verify data in the vessel’s operating manual

ANS.: B

35. When the height of the metacenter has the same value as the height of the center of gravity, the metacentric height is equal to 
    1. height of the metacenter
    2. height of the center of gravity
    3. same as half the height of the metacenter
    4. zero

ANS.: D

36. When a vessel is floating upright, the distance from the keel to the metacenter is called the 
    1. metacentric differential
    2. height of the baseline
    3. height of the metacenter
    4. righting arm

ANS.: C

37. In small angle stability, when external forces exist, the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the 
    1. center of gravity
    2. center of flotation
    3. metacenter
    4. metacentric height

ANS.: C

38. The horizontal distance between the vertical lines of action of gravity and the buoyant forces is called the 
    1. righting arm
    2. metacentric height
    3. metacentric radius
    4. height of the center of buoyancy

ANS.: A

40. The inclining experiment conducted on a merchant ship is the method for determining the exact location of the
    1. ship’s displacement in seawater
    2. position of the ship’s center of gravity
    3. position of the ship’s center of buoyancy
    4. position of the ship’s metacenter

ANS.: B

41. Structural bulkheads on a ship are usually
    1. continuous
    2. watertight
    3. transverse
    4. non watertight

ANS.: B

42. Joiner bulkheads on a ship provide
    1. compartmentation
    2. watertight integrity
    3. structural support
    4. tank boundaries

ANS.: A

43. When the ship’s bulkheads are reinforced against bending and bulging, the bulkheads are provided with
    1. stanchions
    2. girders
    3. stiffeners
    4. rabbits

ANS.: C

44. A vessel’s immediate protection in the event of a broken stern tube is a/an
    1. aft collision bulkhead
    2. stern frame bulkhead
    3. after peak bulkhead
    4. aft machinery space watertight bulkhead

ANS.: C

45. The tailshaft is usually supported by the
    1. spring bearings
    2. tail bearings
    3. stern tube bearings
    4. propeller bearings

ANS.: C

46. A bronzed sleeve is secured to the propeller tailshaft by
    1. keying
    2. shrinking
    3. threading
    4. pressing

ANS.: B

47. A continuous watertight bulkhead on a ship may also be a/an
    1. structural bulkhead
    2. exterior bulkhead
    3. centerline bulkhead
    4. joiner bulkhead

ANS.: A

48. Regarding a ship construction, bulkheads in the quarters are generally
    1. structural
    2. watertight
    3. non-structural
    4. continuous

ANS.: C

49. Bulkheads forming part of the tanks on a ship are stiffened to withstand
    1. deck loads from above
    2. dynamic forces while afloat
    3. hydrostatic pressure
    4. overpressurization

ANS.: C

50. The decks of a ship are supported by transverse members called
    1. trusses
    2. deck longitudinals
    3. deck beams
    4. web frames

ANS.: C

51. Between the side frames of a ship, support for the deck beams is provided by
    1. stanchions
    2. brackets
    3. web frames
    4. deck stringers

ANS.: A

52. Deck beams on a ship are generally spaced at equal intervals and run
    1. longitudinally
    2. vertically
    3. transversely
    4. intermittently

ANS.: C

53. The deck plating on a ship is supported primarily by deck longitudinals and deck
    1. girders
    2. stanchions
    3. frames
    4. beams

ANS.: D

54. The deck loads on a ship are distributed through the deck beams to the
    1. frames
    2. hull
    3. stringers
    4. plates

ANS.: A

57. Compared to internal structural plating, the exterior hull plating on a ship is usually
    1. stronger
    2. thinner
    3. more corrosion resistant
    4. a lower grade steel

ANS.: A

59. The conical steel or composition cone installed on a propeller, known as a fairwater cone, provides which of the following benefits?
    1. reduces water resistance
    2. helps with lubrication
    3. protects the nut
    4. all of the above

ANS.: C

60. Which of the devices listed prevents water from entering the ship’s hull via the propulsion shaft?
    1. stern tube packing or mechanical shaft seal
    2. deflector ring and drain
    3. spring bearings
    4. oiler rings

ANS.: A