A rope used for securing any movable object in place

The direction to which a compass points. Magnetic north differs from true north because the magnetic fields of the planet are not exactly in line with the north and south poles. Observed differences between magnetic and true north is known as magnetic var ...

A gauge that measures air flow as a percentage of capacity, used in rotary screw compressors as an estimator during modulation controls.

The total rate from the point of origin to final destination.

(1) In good condition. (2) To adjust to proper shape or size.

The top of a mast.

A charge, based on a fixed daily rate.

Official terminology for life jacket. When properly used a PFD will support a person in the water. Also called a life jacket, life preserver or life vest.

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

A large foresail or jib that overlaps the mainsail. Also known as a genny. Can be expressed in percentages of overlap, e.g. 150 Genoa is 50% overlap of the mainsail.

Kilograms per square centimeter absolute.

The increase in pressure in the discharge header that develops as a result of flow after the pressure relief device opens

Said of anchor when it is under ship's forefoot, and cable is nearly up and down.

A law of chemistry and physics: the rate of diffusion of one substance in another is proportional to the negative gradient of the concentration of the first substance.

a circular donut-shaped buoy designed to support a person in the water. It is attached to the vessel with a (floating) line so that the person can be hauled back to the boat.

Nickname for a ship's cooper.

Recapitulation of the terms and conditions agreed

Abbreviation for "With Particular Average."

To break loose from a mooring, anchor or docking.

Time and date for payment of a draft.