High speed semisubmerged ship with four struts

Claim 1

A high speed marine vessel having a static and dynamic stability comprising: a platform member; two parallel elongate hulls operationally disposed below the level of surface waves laterally separated a distance equal to at least two hull diameters each hull is provided with a canard fin mounted on the forward portion of each hull for improving said stability; a first water surface piercing strut member shaped with a hydrofoil cross-sectional configuration for reduced spray and wave drag and reaching from the forwardmost extensions of each elongate hull and a second water surface piercing strut member shaped with a hydrofoil cross-sectional configuration for reduced spray and wave drag and reaching from the aftmost extensions of each elongate hull to support said platform member, both of the first strut members lie in the same forward lateral projection and both of the second strut members lie in the same aft lateral projection, said first strut members and said second strut members arE sized to present a reduced lateral water projection area and are sufficiently longitudinally separated to enhance said stability; and a pair of opposed cantilevered vanes reaching toward one another from separate ones of said elongate ulls operationally disposed below the level of said surface waves mechanically coupled to said hulls and longitudinally disposed to ensure the creation of the vanes'' dynamic center of vertically exerted pressure substantially aft the centroid of said marine vessel to yet further improve said stability.