A valve that controls the flow of air that passes through the valve. Used often for retardation or timing circuits, but especially for regulating the piston speed in cylinders.

Vibration isolation mount. Provides reductions in vibration transmission.

The standard atmosphere is defined as the pressure exerted by a column of mercury 760 mm high with a density of 13,595 g/cm

Jail

The post that the rudder is attached to. The wheel or tiller is connected to the rudder post.

The process of assimilating many small shipments into one large shipment at a central point so that economies of scale may be achieved; to commence discharge of cargo.

A piece of rope placed so as to confine a spar or another rope. A handle made of rope, in the form of a circle, (as the handle of a chest.) is called a becket.

The helmsman.

Illegal passenger who hides himself on board a ship in order to gain free passage or to escape from a country.

In water transportation, the time it takes between the arrival of a vessel and its departure.

LPG or propane for short. Propane is a common fuel used for cooking and heating. CNG natural gas is considered safer because propane is heavy than air and will sink into the bilge if it leaks, creating the potential for an explosion. Propane is more easil ...

A running light allowed on some sailboats instead of the normal bow and stern lights. The tricolor light contains the red and green side lights and the white stern light in a single fitting that is attached to the top of the mast.

Abbreviation for "Cubic Meter" (capital letters).

The locker in which the bos'n keeps his deck gear.

An air operated device for hoisting or pulling. Similar to a slusher or winch

A spring loaded pressure relief valve actuated by the static pressure upstream of the valve. The valve opens normally in proportion to the pressure increase over the opening pressure.

When a ship's head or stern pitches suddenly and violently into the trough of the sea.

(1) Sailing away from the wind with the sails let out all the way; going with the wind, downwind sailing (2) To allow a line to feed freely. (3) The shape of the afterpart of the underbody of a ship in relation to the resistance it creates going through t ...

Liquefied Petroleum Gas, or a carrier of LPG.

The frame of a container constructed to hold one or more thermally insulated tanks for liquids.