Storm Aircraft was originally called SG Aviation srl.
[1] The Sea Storm features a cantilever shoulder-wing, a two-seats-in-side-by-side configuration, with four seats optional, an enclosed cockpit under a hinged canopy, retractable conventional landing gear and a single engine in pusher configuration.
There are two small airfoil sponsons for water balance mounted low on the fuselage.
[1] The aircraft wings are made from aluminum sheet with some fibreglass parts, while the hull is composite.
[1] By 1998 the company reported that 25 kits had been sold and 12 aircraft were completed and flying.