TPC. The buoyancy created by increasing the draught by 1 cm.


Related Terms

RIGHTING LEVER

The horizontal distance between the forces of Buoyancy and Gravity, acting on a vessel when heeled by wind or waves.

CENTRE OF BUOYANCY

The center of the area of the underwater transverse or longitudinal section of a hull at a particular trim, hence the point at which the force of buoyancy is regarded to be acting vertically upwards.

INFERENTIAL LIQUID-LEVEL METER

A liquidlevel meter in which the level of a liquid is determined by measurement of some phenomenon associated with this level, such as the buoyancy of a solid partly immersed in the liquid, the pressure at a certain level, the conductance of the liquid, or its absorption of gamma radiation, rather than by direct measurement.

DECKS AWASH

A situation in which the deck of the vessel is partially or wholly submerged, possibly as a result of excessive listing or a loss of buoyancy.

CAMELS

Loaded vessels lashed tightly, one on each side of another vessel, and then emptied to provide additional buoyancy that reduces the draught of the ship in the middle.

FLOAT CHAMBER

A sealed, hollow part attached to the compass card of a magnetic compass as part of the compass card assembly, to provide buoyancy to reduce the friction on the pivot bearing

METACENTER

The intersection point of a vertical line drawn through the line of buoyancy of a slightly listed vessel which intersects the centerline plane

FURNACE DRAFT

The negative air pressure generated by buoyancy of hot gases inside a furnace. The temperature difference between gases within the furnace and in the atmosphere along with furnace and stack height basically determine the amount of draft generated by the furnace. Draft is generally measured in negative inches of water column. ('-w.c.'; 27.7 inches w.c. = 1 psig)

LCB

BUOYANCY

The upthrust upon a body that is partially or wholly immersed in a liquid. Colloquially, the ability of an object to float.

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