Scoop like devices used to direct air into and ventilate a boat.

An anchor which has become entangled with some object on the bottom, or, on weighing, has it's rode or chain wound around its stock or flukes.

Froth of sea foam.

Abbreviation for "Bales."

A stationary element between stages of a multistage centrifugal compressor. It may include guide vanes for directing the flowing medium to the impeller of the succeeding stage. in conjunction with an adjacent diaphragm, it forms the diffuser surrounding t ...

Heavy-weather practice of pouring oil on the sea so as to form a film on the surface, thus preventing the seas from breaking. To smooth out some difficulty.

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.

Large ships dating back to the 17th century typically with three masts carrying rectangular sails mounted on horizontal spars called yards. A sailing-ship rig with rectangular sails set approximately at right angles to the keel line from horizontal yards.

A type of journal bearing in centrifugal air compressors.

To permanently join two pieces of rope. It will not pass through a block since it increases the diameter

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.

To ease away slowly, as in a line, sheet, or falls of a tackle.

Once the only method, other than human voice, of passing orders to men on board ship; the instructions to perform certain tasks were conveyed by different notes and pitches on the high-pitched whistle.

The imaginary line running from bow to stern along the middle of the boat.

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

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.

A structure of heavy timbers placed between ground ways and cradle to support the ship during launching.

Abbreviation for:- Port of Loading.- Petroleum, Oil, and Lubricants.

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

The ship's funnel or smokestack.