Naval Architecture – MEO CLASS 4 WRITTEN PAPER

61. The purpose of the propeller fair water cone is to
    1. lock the propeller in position
    2. minimize water turbulence
    3. eliminate axial thrust
    4. eliminate cavitation

ANS.: B

62. Vertical transverse structures in the double bottom are known as
    1.  pillars
    2. floors
    3. ceilings
    4. stanchions

ANS.: B

63. Keyless propellers hubs secured to tailshaft by “pilgrim nuts”, are removed by
    1. spring-loaded jacks
    2. hydraulic pressure
    3. heating with a torch
    4. hydraulic lever arms

ANS.: B

65. In ship construction, the shell plating is arranged in strakes, with four of the strake being specifically identified by name. The strake next to the keel is identified as the
    1. keel strake
    2. garboard strake
    3. bilge strake
    4. sheer strake

ANS.: B

66. What class of bulkhead is required around the galley on a ship?
    1. class A
    2. class B
    3. class C
    4. class D

ANS.: B

67. The garboard strake is located
    1. at the very bottom center
    2.  just under the sheer line
    3. at each side of the keel
    4. at the turn of the bilge

ANS.: C

68. Structural members used to support and transmit the downward force of the load and distribute that force over a large area, are called
    1. pillars
    2. stanchions
    3. columns
    4. all of the above

ANS.: D

69. When the propeller blades are integral with the hub, the propeller is called a
    1. built up propeller
    2. solid propeller
    3. controllable pitch propeller
    4. suction back propeller

ANS.: B

70. In ship construction, which of the listed strengthening member act to support the decks?
    1. pillars
    2. girders
    3. bulkheads
    4. all of the above

ANS.: D

71. Vertical support members used to strengthen bulkheads are called
    1. stiffeners
    2. panels
    3. stanchions
    4. brackets

ANS.: A

72. The double bottom in a vessel is a space comprised of
    1. plating forming the engine room tank top
    2. doubler plating installed over the flat keel plate
    3. a watertight boundary formed by the inner bottom
    4. compartments between the inner and outer bottoms

ANS.: D

73. Compared to a constant pitch propeller, a controllable pitch propeller
    1. more efficiently uses available engine power
    2. operates at a lower efficiency at a fixed speed
    3. produces the same torque at lower engine power
    4. develops its rated power at a lower speed

ANS.: A

74. In ship construction, the hull frame members extending athwartship are called
    1. deck frames
    2. stringer frames
    3. longitudinal frames
    4. transverse frames

ANS.: D

75. The inner bottom of a ship is the
    1. plating forming the engine room tank top
    2. doubler plating installed over the flat keel plate
    3. watertight boundary formed by the skin of the ship
    4. compartment between the tank top and skin of the ship

ANS.: A

76. Vessel propellers are classified as being right hand or left hand. A right hand propeller turns clockwise when viewed from
    1. the bow
    2. the stern
    3. the port side
    4. the starboard side

ANS.: B

77. In a longitudinally framed ship, the longitudinal frames are held in place and supported by athwartship members called
    1. stringers
    2. web frames
    3. pillars
    4. brackets

ANS.: B

78. The structural members of the hull extending in a fore and aft direction are called
    1. frames
    2. joiners
    3. longitudinals
    4. knees

ANS.: C

79. In ships construction, structural hull members installed athwart ship are
    1. deck beams
    2. stringers
    3. girders
    4. breast hooks

ANS.: A

80. A cofferdam is a/an
    1. empty space between tank tops and bilges
    2. cement baffle in a fresh water tank
    3. empty space separating compartments to prevent the contents of one compartment from entering another in case of leakage
    4. tank for storing chemicals

ANS.: C