The mark stencilled in and painted on a ship's side, designated by a circle and horizontal lines to mark the highest permissible load water lines under different conditions.

A rotating device, with two or more blades, that acts as a screw in propelling a vessel. Sometimes called a screw.

Compartment for the storage of oil or other fuel.

On a square-rigged ship, the ropes which hang below a yard upon which the topmen stand while aloft furling or reefing a sail. They were supported by ropes from the yard known as "stirrups".

A metal fitting on the mast that the stays attached to the mast; a fitting on the mast for securing rigging.

The total electrical power input to a compressor, including drive motor, cooling fan, motors, controls, etc.

Used with reference to charges assessed for cargo movement past a line-haul terminating point.

To transfer goods from one transportation line to another, or from one ship to another.

Usual and accustomed speed.

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

A pipe, tube or channel that conveys a substance (such as air throughout a building).2. Tubes used to move air, such as to ventilate an enclosed area.

A government document declaring designated goods to be shipped out of the country. To be completed by the exporter and filed with the U.S. Government.

In water transportation, the deliberate sacrifice of cargo to make the vessel safe for the remaining cargo. Those sharing in the spared cargo proportionately cover the loss.

Is a process taking place under constant volume. To raise the pressure from state 1 to state 2, heat must be added. The pressure change is proportional to the change in temperature.

A painted stripe along the waterline delineating the topside from the bottom paint

A person or firm who transacts all business in a port on behalf of shipowners or charterers. Also called shipping agent; agent.

Cost of unloading a vessel is borne by the charterer.

A draft that matures at a fixed or determinable time after presentation or acceptance.

Used to describe a light that blinks on and off, where the period of light is shorter than the period of darkness separating the flashes.

Metal or plastic pieces attached to a sail's luff that slide in a mast track to allow easy hoisting of the sail.