Ice pack whose limits cannot be seen from ship.

Flow of air under specific conditions required at a particular point.

A compressor belonging to the group of dynamic compressors.

Also saloon; the main social cabin of a boat

The stay that the jib is hoisted on. Usually the headstay.

A piece of trim, usually wood, used to cover and often decorate a portion of the boat, i.e., caprail.

The bearing of an object after magnetic variation has been considered, but without compensation for magnetic deviation.

An order to cease (stop).

A wearable device used to keep a person afloat. Also called a life jacket, life preserver, PFD or personal floatation device.

A signboard attached to a daybeacon to convey navigational information presenting one of several standard shapes (square, triangle, rectangle) and colors (red, green, orange, yellow, or black). Daymarks usually have reflective material indicating the sha ...

The condition when a perfect gas is isentropically compressed, and the gas inlet temperature and also the amount of work spent is the same for each stage.

Alternatively letting the sails draw, then spilling wind so as to keep a vessel more or less in one place until space is available, marking time.

A party named in an instrument as the beneficiary of the funds. Under letters of credit, the payee is either the drawer of the draft or a bank.

An absolute temperature scale. (

Condition of a sailing ship when all sails have been taken down in a severe storm, very often a hazardous undertaking if there is a high sea running.

A propeller drawn through the water that operates a meter on the boat registering the speed and distance sailed

A capacity measurement equal to one-fourth of a barrel.

A small crane that projects over the side of the boat to raise or lower objects (such as smaller boats) from or to the water.

A locker big enough to hang clothes.

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