Grumman Sea Wings Hydrofoil Kit Manual (0154)
Installation and operating instructions for the Model A70 "Sea Wings" hydrofoil kit produced by Dynamics Development Inc., subsidiary of Grumman Aerospace Corp. for small runabouts. The kit was designed for outboard boats with forward steering rated for at least 35 hp motors in the 14 to 16 foot range whose weight does not exceed 1300 pounds equipped and loaded ready to run. The kit contains al1 the elements required to assemble two main foils and a tail foil along with the means of attaching these foils to the hull of the boat. The main foils are of the swept, surface-piercing type mounted just forward of the center of gravity of the boat. The submerged rear foil is attached to the transom. The main foils are attached to the boat by means of a foundation system consisting of a main bean run through the hull and side plates attached to the beam-ends and the gunwales, to which the foils are hinged and locked. The tail foil is hung on the transom with fittings bolted to the transom.