An audible or visual discharge at a pressure slightly lower than the set pressure on a valve. Warns the operator that the valve is about to open.

Occurs whenever the system undergoes either a change in state or an energy transfer at a steady stare.

Pieces of timber bolted to the hounds of a mast, to support the trestle-trees.

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

A sudden burst of wind stronger than the current wind conditions.

Instructions given by a shipper to a bank indicating that documents transferring title to goods should be delivered to the buyer only upon the buyer's acceptance of the attached draft.

A seaman's personal "painter" is his lifeline, and if it is severed, he dies.

Stowing cargo destined for a specific location close together to avoid unnecessary cargo movement.

Equipped to extract petroleum, e.g. oil production ship.

Seaman who was born aboard a warship. As this was once considered to be one of the essentials of the perfect seaman, it has long been a complimentary term.

An inland location where cargo is received by the ocean carrier and then moved to a coastal port for loading.

To fill in the seams with cotton or oakum.

A form used to acknowledge receipt of cargo and often serves as basis for preparation of the ocean bill of lading.

A familiar dish at sea before refrigeration was available. It was a stew of salt meat, broken biscuit, potatoes, onions and available spices.

A general term for provisions, materials and supplies used aboard ship for the maintenance of the crew, and for the navigation, propulsion and upkeep of the vessel and its equipment.

A cruise of a new ship for the purpose of testing out all machinery, etc. Shank

Tanks carried in various parts of a ship for water ballast, for stability and to make the ship seaworthy.

A small receiver fitted on the inlet or discharge of a reciprocating compressor. The device is designed to remove the resonance from the compressor thereby reducing noise.

Abbreviation for "Trailer Load."