Wide boards used to make a watertight external covering.
Related Terms |
HATCH
An opening in a boat's deck fitted with a watertight cover.
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CAISSON
A watertight gate for a lock, basin, etc
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COLLISION BULKHEAD
The foremost main transverse watertight bulkhead designed to keep water out of the forward hold in case of bow collision damage.
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BULKHEAD DECK
The uppermost deck to which the transverse watertight bulkheads are carried
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FOREPEAK BULKHEAD
The foremost main transverse watertight bulkhead designed to keep water out of the forward hold in case of bow collision damage.
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WEATHER_DECK
Uppermost continuous deck and having no overhead protection having watertight openings
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COMPARTMENTATION
The subdividing of the hull by transverse watertight bulkheads so that the ship may remain afloat under certain flooding conditions
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STERN TUBE
The watertight tube enclosing and supporting the propeller shaft on bearings
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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
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ASHCROFT SYSTEM
Timber boat building technique using two layers of overlapping diagonal strip planks with glue barrier between. High strength and low weight.
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