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bell shaped fitting serving as deck opening to ventilation ducts.



Related Terms

SHELTER DECK

A superstructure deck fitted continuous from stem to stern and fitted with at least one tonnage opening

KEVEL

A two armed metal deck fitting around which a vessel's lines are made fast.

HATCH WAY

Opening in the deck of a vessel through which cargo is loaded into, or discharged from the hold and which is closed by means of a hatch cover.

CAVAL

A two armed metal deck fitting around which a vessel's lines are made fast.

FREEING PORT

An opening in the lower portion of a bulwark, which allows deck water to drain overboard

HATCH SQUARE

The deck area directly below the hatch opening in a cargo hold.

SCUTTLE

A small circular or oval opening fitted in decks to provide access

LUTCHET

A fitting on ship's deck to allow mast to pivot to pass under bridges.

TONNAGE OPENINGS

Nonwatertight openings in the shelter deck and in the tween deck bulkheads immediately below in order to exclude spaces from tonnage measurement and thus obtain reduced gross and net tonnage. The openings could be closed by nonwatertight wood shifting boards or metal covers meeting the tonnage and load line regulations

COCKPIT

An opening in the deck from which the boat is handled.

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