A measurement. Parts per billion

A multihull with two hulls separated by a deck or crossbeams from which a trampoline is suspended; abbreviated "cat."

To luff or luff up is to head into the wind, causing sails to flutter.

To lie at anchor; to ride out; to safely weather a storm whether at anchor or underway.

Usual and accustomed speed.

(1) A small wooden cask in which grog was carried. (2) A type of marine steam reciprocating engine where two engines were used together on the same propeller shaft.

A draft that matures at a fixed or determinable time after presentation or acceptance.

That part of the total stroke which can be utilized repeatedly in actuator applications. It is measured starting at the compressed height and is the difference between the compressed height and the actuator height limit.

Cost of unloading a vessel is borne by the charterer.

Metal or plastic pieces attached to a sail's luff that slide in a mast track to allow easy hoisting of the sail.

Shoal area between two navigational channels.

A warehouse authorized by Customs to receive duty-free merchandise.

Similar to a whip, an instrument of punishment where seamen were flogged on their bare backs.

Extending a sail using a whisker pole

A metal fitting on the mast that the stays attached to the mast; a fitting on the mast for securing rigging.

The tallest mast; the forward mast of a yawl or ketch; the mast furthest aft on a schooner

On wooden vessels, the frames or ribs of a ship, connected to the keel, which give shape and strength to the ship's hull.

A dust-collection chamber containing numerous permeable fabric filters through which the exhaust gases pass. Finer particulates entrained in the exhaust gas stream are collected in the filters for subsequent treatment/disposal.

The horizontal movement of the water due to tide