The difference in pressure between the opening pressure and reclose pressure of a valve. May be expressed in percentage of set pressure or "psig".

A wooden wedge fitting into a drainage hole in the bottom of a boat for the purpose of draining the boat when she is out of water.

A draft payable upon presentation to the drawee.

Trailer on which shipping containers are carried when moved by road.

A lift truck fitted with lifting attachments operating to one side for handling containers.

To measure the depth of the water with a lead. Also said of a whale when it dives to the bottom.

A 19th century term for a yachtsman who sails his own yacht without the help of a professional skipper.

In a manner, or fashion, befitting a seaman.

All matter consists of molecules which are in constant motion, but which are held together by molecular forces. In a solid the molecules are closely packed and arranged in such a pattern that the influence of the molecular forces is very strong. This give ...

In sailboat racing, the mark or buoy that signifies one side of the starting line, opposite of the race committee boat.

Timber placed across the floor of the cargo hold to protect it from damage.

Said of a vessel's anchor, or cable when the amount of cable out is not more than one-and-a-half times the depth of water.

Path through open water used for commercial vessel passage and so noted on chart

freezing of a piston ring in its groove in a piston engine or reciprocating compressor due to heavy deposits in the piston ring zone.

Code of Practice for the Safe Loading and Unloading of Bulk Carriers

The highest navigation bridge. It usually includes an added set of controls above the level of the normal control station for better visibility.

Two half hitches around a spar or post. Easy way to make a line temporarily fast to a piling or post. The clove hitch can jam under heavy tension, making it difficult to untie. Worse, is its tendency to untie itself when subjected to repeated strain and r ...

See Brokerage.

Running directly before wind and sea.

A loss discovered before or at the time of delivery of a shipment.