A passenger or cargo-carrying ship which is operated between scheduled, advertised ports of loading and discharge on a regular basis.

Seaman's scornful name for any lead of a rope by which effort is lost or wasted.

Federal Communications Commission Rules governing radio equipment and operation in the United States.

Nautical equivalent of ceiling

To fill the seams of a vessel with pitch.

A knot used to tie two lines together.

Is the ratio of the thermodynamic work requirement in the cylinder to actual brake horsepower requirement.

A labyrinth type filter having the active surfaces continuously splashed with oil. Most pollutants are absorbed by the oil which when circulated releases its pollutants, which sink by gravity to the bottom of the oil pan.

Person given a passage in one of H.M. ships; usually on compassionate grounds.

A phrase preceding the signature of a drawer or endorser of a negotiable instrument; signifies that the instrument is passed onto subsequent holders without any liability to the endorser in the event of nonpayment or nondelivery.

A board with cleats, forming a bridge reaching from a gangway of a vessel to the wharf.

A method of drying natural gas.

A floating log

A stationary, spirally shaped passage that converts velocity head to pressure.

Method of producing a chart in which the parallels of latitude and the meridians of longitude intersect each other at right angles.

Completely filled with water.

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

A restrictive tube used in a refrigeration system which restricts the flow of freon and allows pressure to build on one side and suction on the other. It is located between the condenser and the evaporator.

U.S. Commerce Department document, "Shipper's Export Declaration."

Wind coming from the north.