To intercept the wind. A vessel or highland to windward is said to becalm another. So one sail becalms another.

A frame that supports a boat when she's hauled out of the water onto shore.

Former name for the equipment of a vessel, and included the personnel.

A paint applied to the boat's bottom below the waterline which contains "poisons", such as copper, to inhibit the growth of marine life such as weeds or barnacles.

A propeller at the lower sea-covered part of the bow of the ship which turns at right angles to the fore-and-aft line and thus provides transverse thrust as a maneuvering aid. A propulsor installed near the bow to provide a transverse thrust component en ...

In the middle portion of the boat - Roughly halfway between a ship's stem and stern, and where the beam usually is the widest.

The difference between the maximum extended height and the compressed height of an air actuator.

The bearing surrounding the propeller shaft where it exits the hull.

A term which describes the rising of warm air above cold air when two air masses of different temperatures, humidity and pressure meet.

The marrying of two or more portions of one shipment that originate at different locations, moving under one bill of lading, from one shipper to one consignee. Authority for this service must be granted by tariff publication. See Bill of Lading.

A fix taken by taking bearings of a single object over a period of time. By using the vessel's known course and speed, the location of the vessel can be found.

To drag the bottom for an anchor. Also, large oars used in small vessels to force them ahead.

A strong pair of iron, steel or wooden posts on a ship's deck, around which ropes or cables are wound and held fast.

Cycles per minute - a unit of measure of the frequency of any vibration.

The act of breaking out the flukes of an anchor if they are caught on some obstruction, preventing it from being normally weighed.

The place to which a shipment is consigned.- The place where carrier actually turns over cargo to consignee or his agent.

Force per unit area, usually expressed in pounds per square inch (PSI) or BAR.

The posted bill showing stations of the crew at maneuvers and emergency drills.

Electrical power converter; converts square-wave DC current to sine-wave AC current

To steer the boat more into the wind, thereby causing the sails to flap or luff.