C. anticyclone

D. lack of frontal activity

51[3422]In most cases，the direction of the apparent wind lies between the bow

and ______.

A. the direction of the true wind

B. true north

C. the beam on the windward side

D. the beam on the lee side

52[3479]The inner bottom is the ______.

A. tank top

B. compartment between the tank top and shell of the vessel

C. inner side of the vessel's shell

D. space between two transverse bottom frames

53______ is halfway between the forward and after perpendiculars and is reference point for vessel construction

A half length

B mid_body

C center line

D amidships

54119. Watertight compartments are separated by _____.

A. Longitudinal bulkhead

B. Tween decks

C. Dunnages

D. Decks and bulkheads