Caulker's name for the seam in the upper deck planking next to a ship's waterways. There was very little space to get at this seam, making it a difficult and awkward job. This is the origin of the expression "Between the devil and the deep blue sea, since ...

Ties used to tie up the sails when they are furled to the boom or yards.

To stop, especially to stop work.

Surrounded by land.

An order to stop; as, "Avast heaving!"

Shore crane with a wide span.

A marine insurance policy that applies to all shipments made by an exporter over a period of time rather than to one shipment only.

As provided in the Shipping Act of 1984, a contract between a shipper (or a shippers association) and an ocean common carrier (or conference) in which the shipper makes a commitment to provide a certain minimum quantity of cargo or freight revenue over a ...

To deliberately put a sailor ashore and leave him there while the ship sails away.

An instrument designed to detect the ultrasonic emissions and convert them to audible signal.

Cargo moving under Customs control where duty has not yet been paid.

The actual temperature of a moving gas stream. It is the temperature indicated by a thermometer moving in the stream with the same velocity as the stream.

A term used to describe the condensate flow rate. It can be expressed as gallons per minute (GPM) or pounds mass per minute (lbm/min)

A fluid (as hydrogen or air) that tends to expand indefinitely. Is one of three basic phases of matter.

A U.S. Customs program wherein at least two designated Customs ports will enter cargo that arrives at either port without the necessity of an in-bound document.

Is the ratio of the theoretical work requirement to the actual work required to be performed on the gas for compression and delivery.

The temperature which would be measured at the stagnation point if a gas stream were stopped, with adiabatic compression from the flow condition to the stagnation pressure.

The gauge pressure at which a pressure vessel is maintained in normal operation.

The difference between magnetic north and true north, measured as an angle. Magnetic variation is different in different geographic locations, so the nearest compass rose to each location on a chart must be used.

A bun-shaped cover placed over a radar scanner to prevent risk of fouling and to protect it from the weather.