1972•Journal of Basic EngineeringRequires access

Hydrodynamic Drag of Semisubmerged Ships

Rowe Chapman

Abstract

Linearized theory for wave-making resistance is applied to semisubmerged ships. Theoretical and experimental values are compared for submerged hulls, struts, and struts in tandem. Strut forms producing minimum wave-making resistance are calculated at several speeds and water plane areas for a typical submerged hull. Struts are described in terms of step functions to facilitate an investigation of multiple struts including the effect on drag of decreased wetted surface area.

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Key concepts: Drag, Hull, Marine engineering, Mechanics, Parasitic drag, Drag coefficient, Plane (geometry), Structural engineering