A measurement of vacuum or pressure that is used to measure the airflow restriction.

The stay leading from the mast to the bow

Landfall. To reach shore.

Time period from when a compressor loads until it unloads.

The stationary seating surface, the inlet of a valve.

Removal of worn or damaged gear and the fitting of new gear in replacement.

An order to commence ship's work.

A rope passed round a man in the chains, while sounding.

A structural failure of the filter medium due to flexing caused by cyclic differential pressure.

Limber hole of a ship.

(1) The alternate rise and fall of the bow of a vessel proceeding through waves; also called hobby horsing (2) The theoretical distance advanced by a propeller in one revolution. (3) Tar and resin used for caulking between the planks of a wooden vessel.

A sailboat with its bow pointed directly into the wind, preventing the sails from filling properly and stopping the boat. It can be very difficult to get a boat that is in irons back under sail. also known as "In Stays".

A sailboat is always on one tack or the other; that is the sail is always on one side or the other.

To leak; take in water.

A marine insurance policy that applies to all shipments made by an exporter over a period of time rather than to one shipment only.

The semi-circular steel coupling device mounted on a tractor which engages and locks with a chassis semi-trailer.

The officer on board responsible for the navigation of the ship.

Land

Something that covers or protects the filter assembly.

The relationship (ratio) between the sails height (luff length) and length along the foot. High aspect ratio means a sail that is tall and narrow, low aspect ratio is a short, squat sail. A high aspect ratio sail is very efficient in sailing close to the ...