Barge lattice skegs

Details Barge lattice skegs Barge lattice skegs

1987-01-07

1988-11-08

Peters, Jr., Joseph F.

Ships

Displacement-type hull

Having specific bottom

114129, 114163, B63B 100

Patent

active

047827793

ABSTRACT:
A skeg unit mounted on a raked barge stern counter is a box lattice structure including an athwartships row of upright generally parallel vanes having their upper ends connected by an athwartships upper horizontal tie plate and their lower ends connected by a horizontal lower tie plate. The box lattice structure is mounted to the barge stern counter by struts spaced athwartships of the barge of a length to locate the upper tie plate below the loaded waterline of the barge. The vanes are of airfoil cross section and the outboard vanes are toed out. The horizontal tie plates are of airfoil cross section and have negative angles of incidence, the negative angle of incidence of the upper tie plate being greater than the negative angle of incidence of the lower tie plate.

REFERENCES:
patent: 3934531 (1976-01-01), Allen
patent: 4217844 (1980-08-01), Gruzling

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