The top of a wheelhouse, forecastle, etc., having the form of a turtle's back.

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

TRADES Foreign-to-foreign trade carried by ships from a nation other than the two trading nations.

An astray shipment (a lost shipment that is found) sent to its proper destination without additional charge.

When the two blocks of a tackle have been drawn as close together as possible.

An imaginary line around the center of the earth at 0

An indicator which signals the difference in pressure between any two points of a system or a component.

An elevated guardrail set up at the bow of a vessel. When erected at the stern, it is called a pushpit.

Part of a ship/s side projecting upwards along the line of the weather deck or uppermost deck.

Abbreviation for "Gross Vehicle Weight." The combined total weight of a vehicle and its container, inclusive of prime mover.

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

In a line parallel to the ship's keel.

The wooden bit in the stem of a whaling boat around which the harpoon line was controlled.

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

The Roman god of the sea, associated with Salacia, the goddess of Salt Water.

A line attached to the crown of an anchor and used to help free it in the event it becomes fouled.

Where the engines of a ship are confined.

A barge which loads material dumped into it by a dredger and discharges the cargo through the bottom.

Lines drawn on a weather map indicating regions of equal pressure. When the lines are close together, this indicates a rapid change in air pressure, accompanied by strong winds.

The tendency in a boat to keep an upright position or to return to it when careened over.