The point (speed of sound) at which air flow through an orifice can not increase regardless of pressure drop.

Steel section running along the length of each bottom edge of a shipping container giving its structural strength.

A vertical post extending above the deck for securing mooring lines

A symbol placed on packages for identification purposes; generally a triangle,square, circle, etc. with letters and/or numbers and port of discharge.

An official signature or seal affixed to certain documents by the consul of the country of destination.

Heavy canvas used as a covering.

On a square-rigged ship, a light weather sail set next above the royal in fair weather.

A ball shaped buoy marking a navigational hazard.

A single outlet or limited number of outlets in a building used to connect tools or equipment to the air system.

Heavy-weather practice of pouring oil on the sea so as to form a film on the surface, thus preventing the seas from breaking. To smooth out some difficulty.

A coating or precipitate deposited on surfaces such as water pipes, steam boilers that are in contact with hard water. Water that contains carbonates or bicarbonates of calcium or magnesium are likely to cause scale when heated.

An anchor which has become entangled with some object on the bottom, or, on weighing, has it's rode or chain wound around its stock or flukes.

Another term for a marine railway.

Length of chain used for putting around logs or steel products.

A materials handling/storage facility used for completely unitized loads in containers and/or empty containers. Commonly referred to as CY.

The difference in pressure between any two points of a system or component.

To temporarily stop all movement of a line through a block by placing the hauling part across the sheave of the block. This jams the sheave and holds it tight, and a pull on the hauling part will release it.

Seller is responsible for goods and preparation of export documentation until actually placed aboard the vessel.

The rod connecting the disc to the lever on a valve.

First voyage of a ship.