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Shipbuilding
The design, construction and maintenance of both commercial and military ships and floating vessels in shipyards or other marine facilities.
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Shipbuilding > Naval architecture 
winglets
Shipbuilding; Naval architecture
A keel fitted with twin fixed appendages at its bottom in an inverted Vee shape.
supercavitating propeller
Shipbuilding; Naval architecture
A kind of screw propeller so shaped as to prevent cavitation bubbles from collapsing on the blades.
spectacle frame
Shipbuilding; Naval architecture
A large casting extending outboard from the main hull and furnishing support for the ends of the propeller shafts in a multiscrew ship. The shell plating (bossing) encloses the ...
moon pool
Shipbuilding; Naval architecture
A large opening through the deck and bottom of a drill ship at about amidships to accommodate the major drilling operations.
box girder
Shipbuilding; Naval architecture
A large structural beam composed of four plates arranged in a rectangular configuration in cross section.
effective length
Shipbuilding; Naval architecture
A length sometimes used for speed-power calculations and the coefficients therefor. It is determined from the sectional area curve by excluding any abrupt tailing off at the after ...
