A life-threatening condition where there is loss of body heat; the greatest danger for anyone in the water. As the body loses its heat, body functions slow down, and this can quickly lead to death.

Combination minimum pressure valve and check valve.

Also saloon; the main social cabin of a boat

The part of the rotating element of a dynamic compressor that imparts energy to the flowing medium by means of centrifugal force. It consists of a number of blades mounted so as to rotate with the shaft.

Sailing with the tiller over to leeward by force of the wind

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

A container fitted with a means of forced air ventilation.

The action of letting go the sheets of a sailing vessel, thus spilling the wind and reducing the forward motion of the boat.

An absolute temperature scale. (

A sailor's trunk; the intake between the ship's side and a sea valve.

Dining room facilities and kitchen for crew separate from the passenger dining room and kitchen.

Secure hatches and loose objects both within the hull and on deck.

The toal temperature at the intake flange of the compressor.

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

A lighted or unlighted fixed (non-floating) aid to navigation that serves as a signal or indication for guidance or warning. (Lights and daybeacons both constitute "beacons.")

A ported or closed cover for the end of a filter element.

That part of a shaft or axle that rotates or angularly oscillates in or against a bearing or about which a bearing rotates or angularly oscillates.

An act of Congress (1903) prohibiting rebates, concession, misbilling, etc. and providing specific penalties for such violations.

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.

The number of degrees of list a vessel has. The first indication that a vessel may need to reef is when there is too great an angle of heel.