Van Oossanen's invention of the Hull Vane could be considered as one of the most interesting innovations in underwater appendages for reducing a ship's resistance since the invention of the bulbous bow in the late 19th century. The Hull Vane consists of a (hydro)foil positioned below the aft hull bottom of a vessel, way below the water surface. With the bulb forming an integrated part of the forward hull of a vessel, the Hull Vane is an add-on below the stern of the vessel by means of struts. Both however have similar purposes: reducing the vessel's resistance.
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