دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the centre of gravity of the fluid displaced by a floating body (such as a ship or mobile offshore drilling rig).

n: the point at which an object can be supported so that it balances, and at which all gravitational forces on the body and the weight of the body are concentrated;the centre of mass.

n: 1. (obsolete) a worker who places pipe to one side in the derrick. 2. a pneumatic or hydraulic device often used on drill ships that, on command from an operator, either picks up pipe from a rack and lifts it into the derrick or takes pipe from out of the derrick and places it on the rack. It eliminates the need to stand pipe in the derrick or mast while it is out of the hole, which is desirable for maintaining the vessels centre of gravity as low as possible and for minimising the possibility of capsizing.

n: see tower hand.