A powerful, strongly built boat designed to tow or push other vessels, and to assist in maneuvering a ship in a confined area.

A notification by carrier of ship's arrival to the consignee, the "Notify Party," and - when applicable - the "Also Notify Party." These parties in interest are listed in blocks 3, 4 and 10, respectively, of the Bill of Lading.

A ceremony performed on board ships when passengers or crew are crossing the equator for the first time during a voyage.

The air compressor continues to run, usually at full RPM, but no air is delivered because the inlet is either closed off or modified, not allowing inlet air to be trapped.

A large square of heavy canvas fitted with lines to allow it to be drawn under the hull of a ship where it is damaged. The pressure of the seawater holds it tight against the ship and greatly reduces the inflow of water.

A letter of credit that allows the beneficiary to transfer in whole or in part to another beneficiary any amount which, in aggregate, of such transfers does not exceed the amount of the credit. Used by middlemen.

The maximum continuous operating pressure as designed by the manufacturer.

Melting and becoming a liquid by absorbing moisture.

To pass a turn around a belaying pin or cleat.

A measure of distance approximately 3 nautical miles. One-twentieth of a degree of latitude.

Short pieces of line fastened to the sail at reef points, used for tying a reef to reduce sail area. The reef line will pass through reef cringles, which will become the new tack and clew of the reefed sail.

A seaman's sewing outfit for heavy work.

A container fitted with a solid removable roof, or with a tarpaulin roof so the container can be loaded or unloaded from the top.

Any small collar made with spunyarn or light line to hold something in place.

The porous material contained inside the filter to (a) separate the contaminants from the incoming air, gas, or liquid. (b) separate the liquid from the gas. Filter medium is usually made of paper, wire mesh, special cellulose, or a combination.

Remove a boat from the water.

A drum of a windlass for heaving in line.

Something that covers or protects the filter assembly.

A gap unintentionally left uncovered while painting or varnishing.

To remove a sail.