For any given pedestal crane，when the boom is lengthened，the lifting capacity is（）.

A.increases as the cargo closes the head while hoisting
B.increases if the cargo runner is doubled up
C.decreases as the boom is topped to a greater angle
D.is determined by the thrust stresses on the boom

A.provide safe electrical power connection to barge equipment
B.keep the vessel from surging excessively
C.prevent an accidental discharge of static electricity
D.secure the cargo hose to a hatch when loading overall

A.running rigging leading aft from the masts
B.running rigging leading forward from the masts
C.standing rigging leading aft from the masts
D.standing rigging from the cross trees to the mast head