The most commonly used lubricating oil for compressors.

This property is the ratio of the specific weight of air or gas to that of dry air at the same pressure and temperature.

The posted bill showing stations of the crew at maneuvers and emergency drills.

To intercept the wind. A vessel or highland to windward is said to becalm another. So one sail becalms another.

The structure on deck where the donkey engine is located.

A curved or vertical timber that when paired with a floor or additional futtocks makes the frame of a wooden ship.

Also stability sail or riding sail. Any small sail set to help the boat maintain its direction without necessarily moving, as when at anchor or in heavy weather.

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

To drag the bottom for an anchor. Also, large oars used in small vessels to force them ahead.

A paint applied to the boat's bottom below the waterline which contains "poisons", such as copper, to inhibit the growth of marine life such as weeds or barnacles.

A strong pair of iron, steel or wooden posts on a ship's deck, around which ropes or cables are wound and held fast.

A draft that matures on a fixed date, regardless of the time of acceptance.

The bearing surrounding the propeller shaft where it exits the hull.

Development of the lugsail rig where the sail is cut with a very short luff and lon leech.

The type of bottom that the anchor is set in.

States that the volume of a gas, at constant temperature, varies inversely with the pressure.

Force per unit area, usually expressed in pounds per square inch (PSI) or BAR.

The tendency in a boat to keep an upright position or to return to it when careened over.

A propeller at the lower sea-covered part of the bow of the ship which turns at right angles to the fore-and-aft line and thus provides transverse thrust as a maneuvering aid. A propulsor installed near the bow to provide a transverse thrust component en ...

The penalty a seller must pay if the construction project does not meet contractual standards or deadlines.