Usual and accustomed speed.

A fix taken by taking bearings of a single object over a period of time. By using the vessel's known course and speed, the location of the vessel can be found.

When reciprocating compressors run, the moving parts such as pistons, rods, crossheads, connecting rods are repeatedly accelerated and retarded. These velocity changes set up pulsating inertia forces. The forces are of the first and second order. The firs ...

A laborer who works at loading and discharging cargo.

A certificate authenticated by a recognized port authority, certifying that a ship comes from a place where there is no contagious disease, and that none of her crew was infected with such a disease.

A sailing vessel dead in the water due to lack of wind (not moving).

The lifting power. It may be measured by the volume of a watertight hull above the load water line.

The difference between the maximum extended height and the compressed height of an air actuator.

A mast that is in place is stepped.

Horizontally mounted block used to re-direct a line on deck.

An insurance term referring to any defect or other characteristic of a product that could result in damage to the product without external cause (for example, instability in a chemical that could cause it to explode spontaneously). Insurance policies may ...

Cycles per minute - a unit of measure of the frequency of any vibration.

Various statements that the U.S. government requires to be displayed on export shipments. The statements specify the authorized destinations.

To take in, or lower a sail. To put out a light. To cover with water.

The act of breaking out the flukes of an anchor if they are caught on some obstruction, preventing it from being normally weighed.

Port where cargo is discharged from means of transport.

A hand held pneumatic tool. Designed for light demolition work, digging, making holes etc.

Pounds per square inch, differential.

Allows foreign merchandise arriving at one port to be transported in bond through the U.S. to be exported from another port, without paying duty.

Going toward the direction of the wind, by alternate tacks.