Is the ratio of the polytropic compression energy transferred to the gas to the actual energy transferred to the gas.

The white froth on the crests of waves.

An instrument that, once established, cannot be modified or cancelled without the agreement of all parties concerned.

The ring bolted to the upper end of the shank of an anchor and to which the bending shackle secures.

A means of purifying an air stream by using both gravitational and centrifugal forces.

An inspection cover or port in an air receiver tank.

Measurement ton 40 cubic ft or one cubic meter.Net ton, or short ton 2,000 lbs.Gross ton/long ton 2,240 lbs.Metric ton/kilo ton 2,204.6 lbs.Cubic meter 35.314 cubic ft.

The top of a mast.

Abbreviation for "With Particular Average."

The bridge used for taking observations, or directing the handling of the ship.

Machines cooled by water circulated through jackets surrounding the cylinders or casings.

Boat carried at davits on quarter of ship, and kept ready for immediate use when at sea.

Having no sails up. In heavy weather the windage of the mast and other spars can still be enough to move the boat.

Location where shipment begins its movement.

A line drawn to indicate both the direction and magnitude of a force, such as leeway or a current.

A cleat designed to hold a line in place without slipping. It consists of two narrowing jaws with teeth in which the line is placed.

Direct current. A continuous, one directional flow of electricity

Goods floating on surface of sea after a wreck.

Use of individual carrier/rail equipment through a central agency for the benefit of carriers and shippers.

A container fitted with a means of forced air ventilation.