The opening between the jib and the mainsail. Wind passing through this opening increases the pressure difference across the sides of the mainsail, helping to move the boat forward.

Froth of sea foam.

The internal duct and filter medium support

An official signature or seal affixed to certain documents by the consul of the country of destination.

A type of journal bearing in centrifugal air compressors.

A rope network.

A single outlet or limited number of outlets in a building used to connect tools or equipment to the air system.

A vertical post extending above the deck for securing mooring lines

To put out a mooring, hawser or line from a ship to a point of attachment outside her.

A raised portion of the hull forward of the cockpit intended to prevent water entering.

The mount and housing for the compass, usually located on the wheel's pedestal.

elegant, luxurious. Originally an acronym for Port Over Starboard Home. Created by British travelers to India or Australia, describing the preferred accommodations aboard ship, which lessened effects of the tropical sun on the cabins during the voyage.

The quantity of heat required to raise the temperature of a unit weight of a substance by one degree.

The rod connecting the disc to the lever on a valve.

A sudden and violent gust of wind.

On a wooden vessel, the outermost deck plank covering the gunwale. also called Covering Board

On steam vessels has responsibility for the boilers, on diesels, the evaporators and the auxiliary equipment.

Railcars grouped in a train by destination so that segments (blocks) can be uncoupled and routed to different destinations as the train moves through various junctions. Eliminates the need to break up a train and sort individual railcars at each junction.

A long sturdy pole fitted with a blunt hook at one end designed to catch a line when coming alongside a pier or mooring, to facilitate putting a line over a piling, recovering an object dropped overboard, or in pushing or fending off.

Blowdown.