Down or downwards; as in "Lay alow!"; opposite of Aloft.

Heavy roll to leeward with a beam wind.

A line on the compass aligned with the centerline of the vessel that indicates the vessel's compass heading. Since it points to the vessel's bow, it enables a course to be steered by bringing the lubber's line to the point on the compass card which indica ...

Ad valorem.

Generally speaking the word amidships means in the middle portion of a vessel.

To combine or charge with gas.

Retention of property until outstanding dept is paid

A ladder of rope with rungs, used over the side.

Boards fixed vertically to a boat to prevent leeway

A device for drying compressed air by means of condensation obtained by over-compression or cooling, absorption, adsorption or a combination of the above methods.

A place not suitable for anchoring.

Fitted with cabins and catering facilities for offshore crews. Semisubmersible accommodation units are ofte called "Flotels".

The part of the boat behind the beam.

(1) Broken water at bow of a vessel making way. (2) Disturbed water made by a propeller or paddle wheel. (3) The rush or sweeping of waves on a bank, shore, or vessel.

A deviation to move cargo on the return leg of a voyage for the purpose of minimizing ballast mileage and thereby reducing transportation costs.

The error in a compass reading caused by the heel of a boat.

The removal of heat from a gas after compression is completed.

The farthest aft.

Bar gauge (similar to the acronym "psig")

To revolve the drum of a capstan, winch or windlass. (Pulling with mechanical deck heaving gear).