An adiabatic compression with no increase in entropy; a reversible-adiabatic compression.

Small horizontal spars extending athwartships from one or more places along the mast. The shrouds cross the end of these "spreaders", enabling the shrouds to better support the mast.

Brass work, polished (also varnished wood work in yachts).

Resistance to flow. Defined as the difference in pressure upstream and downstream.

Abbreviation for "Standard Transportation Commodity Code."

A belt and line or wire used to help a crew hike out beyond the edge of a boat to counteract the boat's heel. Usually used on small vessels for racing.

In spray painting applications, spray equipment which delivers material at a low pressure of no more than 10 PSI (at the air cap), however, with greater volume of air.

Machine which receives dry bulk cargo. It is used for stowing sugar,ores and minerals in the holds.

Small, cake-shaped pieces of ice floating down rivers.

A storage tank where sewage is stored until it can be removed to a treatment facility.

Maintenance performed after a machine has failed to return it to an operating state.

A filter assembly in which the inlet, outlet and filter element axes are in a straight line.

The compartment at the bow of the vessel

A recess into the keel or a framework fixed to the keelson in which the mast is placed

A large body of water taken aboard (ship a sea).

Tools that operate by air pressure.

Areas of corrosion.

Two lines spliced together to form an eye.

The westerly distance in an arc from Aries, measured as an angle at the pole or as the intercepted arc of the equinoctial between the hour angle of Aries and the hour angle of the body.