Cargo vessel low resistance bow

Details Cargo vessel low resistance bow Cargo vessel low resistance bow

1975-03-24

1977-01-18

Blix, Trygve M.

Ships

Displacement-type hull

114 67R, B63B 100

Patent

active

040033252

ABSTRACT:
A cargo vessel hull bow configuration comprising a horizontal forwardly projecting bow wave making bottom plate disposed substantially coplanar with the bottom surface of the hull proper, of a transverse maximum width approximately one-third the hull width and carried in that position by central support means conducive to a flow pattern extending over the plate diverging both laterally to merge smoothly with laminar flow along the tapered bow sides and downwardly to merge smoothly with laminar flow along the hull bottom. Reduction in transverse width of said wave making plate aft of its fore-and-aft point of maximum width cooperates in the formation of such laminar flow pattern, and, in conjunction with a secondary bow wave formed by the hydrodynamic effect of the plate superimposed on the normal bow wave effect of the hull proper minimizes the resultant bow wave and greatly reduces resistance to forward movement of the composite hull. It also considerably increases safely attainable forward hull speeds in terms of reduced buffeting and over stressing of the bow structure and of the sea-keeping characteristics of the hull at the bow.

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