An auxiliary volume that may be opened to the clearance space for increasing the clearance, usually temporarily, to reduce the volumetric efficiency of the compressor.

An oil-skin hat with broad rear brim.

To communicate with a vessel in sight.

Air under pressure greater than that of the atmosphere.

An extension of the keel for protection of propeller and rudder.

Speed through the water, not "over ground".

A small double-pronged bendable pin used to secure a clevis pin or to keep turnbuckles from unwinding.

Said of an anchor when the cable is taut and vertical.

A pipe of large diameter, through which the chains pass into the chain lockers.

A sail attached to the forestay as opposed to a jib which is attached to the headstay.

Abbreviation for the Railway Service "Container On Flat Car."

Stowage of general or special cargoes in a container for transport in the various modes.

As close to the wind as possible, with all sails full, and no wrinkles in them.

Convention on International Regulations for Preventing Collisions at Sea.

A precursor to the sextant. An old navigational device for checking the altitude of the sun or stars.

To reduce the volume of, by or as if by pressure.

A sheet or halyard coiled so that it will run out quickly without becoming tangled.

term mainly used by companies selling small compressors because it makes their compressors look bigger than they really are. The swept volume is the actual displacement of the piston, forgetting such losses as bumping clearances, valve clearances, ring lo ...

A valve that controls the flow in air lines.

The cabin roof, raised above the deck to provide headroom in the cabin. Also trunk.