The outside plating of a vessel.

A machine that compresses gases. Divided into two groups; process gas compressors and oil and gas field compressors.

On or near the line of immersion of a ship's hull.

Special vessels employed in exploration for, development of or continuous production of, subsea oil and gas.

Wind blowing from off the shore.

A small low rail around the deck of a boat. The toe rail may have holes in it to attach lines or blocks and to allow drainage. A larger wall is known as a gunwale.

An adsorption type material used in compressed air dryers. Industry standards are activated alumina, silica gel and molecular sieves.(2) A material used to desiccate (dry) or dehumidify air.

Across the width of a boat. Also Athwartships.

The outer resin surface of a fiberglass boat, usually colored.

Pieces of hard wood bolted to the outer end of a bowsprit through which are rove the foretopmast stays before they are brought in to the bows and secured.

(1) The mast section next above the topmast and and below the royal mast. (2) The yard supported by that mast. (3) The third lowest square sail. It is stretched between the topgallant yard and the top yard.

Heavy latch by which doors, hatches, portholes, etc., are secured; verb - to latch

A cylinder used to carry rotating machine parts, such as pulleys and gears, to transmit power or motion; such as a propeller shaft.

A hoisting apparatus consisting of a block and tackle rigged at the end of a beam.

Are load carrying machine elements permitting some degree of motion in which the lubricant is air or some other gas.

Filter, Regulator and lubricator sometimes combined in one unit

A mop, formed of old rope, used for cleaning and drying decks.

Abbreviation for "Trailer on Flat Car." The movement of a highway trailer on a railroad flatcar. Also known as Piggyback.

A knot used to temporarily shorten a line.

is the design (built-in) compression ratio for a rotary unit having this feature