The use of a sound barrier separating the sound from the receiver.

A gas produced by many fruits and vegetables that accelerates the ripening and aging processes.

An automatic or manual device designed to control pressure, flow or temperature.

Percentage of freight payable to broker (by owners in c/p's) or applicable to sale or purchase.

A vessel whose bow and stern have drooped. The opposite of sagged.

A label required on shipments of flammable articles.

A can buoy. A cylindrical buoy painted green and having an odd number used in the United States as a navigational aid. At night they may have a green light. Green buoys should be kept on the left side when returning from a larger body of water to a smalle ...

A line used for capsizing the sea anchor and hauling it in.

Pieces of plank bolted to the outer end of the bowsprit, to reeve the foretopmast stays through.

It is the weight of the column of air existing above the earths surface at 45

The wheel of the block over which the fall of the block is rove.

A horseshoe-shaped or circular reef of coral surrounding a lagoon.

Screen of cloth or other material to give the crew protection against the weather, wind and water spray.

Usually refers to a rating that applies to an article regardless of size or quantity.

A form of steam engine where a piston moves back and forth inside a cylinder, transmitting its motion to a driving shaft by a connecting rod and crank.

Air cylinder

The topmost planking in the sides, next below the gunwale, often thicker than other planking.

A formula of the specific factors or elements that control the making of a rate. A rate can be based on any number of factors (i.e., weight, measure, equipment type, package, box, etc.).

The horsepower required to compress adiabatically the air or gas delivered by the compressor through the specified range of pressures.

An attachment point for another object.