Is a compression in which the temperature of a gas remains constant.

Compressors in which successive volumes of air or gas are confined within a closed space, and compressed. They may be either reciprocating or rotating. (Trap air and then squeeze it to the desired pressure).

Short lengths of line attached to the sail used to tie the extra sail out of the way when reefing.

Small, circular sheets of newly-formed ice that do not impede navigation.

States that the volume of a gas, at constant pressure, varies directly with the absolute temperature.

A materials handling/storage facility used for completely unitized loads in containers and/or empty containers. Commonly referred to as CY.

Waterproof clothing.

block

The mount and housing for the compass, usually located on the wheel's pedestal.

A metal fitting with an arm that uses a spring to close automatically when connected to another object.

A raised portion of the hull forward of the cockpit intended to prevent water entering.

A traditional term in the British Navy for serving out an additional tot of rum or grog to a ship's crew. In sailing ship days the main brace was spliced (in terms of drink) in very bad weather or after a period of severe exertion by the crew.

Blowdown.

Froth of sea foam.

To put out a mooring, hawser or line from a ship to a point of attachment outside her.

A structure of heavy timbers placed between ground ways and cradle to support the ship during launching.

Air or vapor given off or expelled as a byproduct or result of an operation or treatment process.

Abnormal, rapid reciprocating movement of the disc on the seat of a pressure relief valve.

The act of supporting anything by propping or shoring it up.

Same as two blocks.