Savoia-Marchetti S.66

The Savoia-Marchetti S.66 was a 1930s Italian twin-hull flying boat designed and built by Savoia-Marchetti as an enlarged development of the S.55, with the aim of replacing the S.55P. It was a twin-hull cantilever monoplane with metal hulls and wings and a wooden twin-boom tail unit. The two crew sat in an enclosed cockpit in the wing centre section between the hulls, and each hull held seven seats, two sleeping couches and a lavatory. The prototype first flew in 1931 with three Fiat A.22 R engines strut-mounted above the wing. The company then built 23 production aircraft with three 559 kW Fiat A.24R engines, replacing the sleeping couches with two to four more seats in each hull, and they flew with Ala Littoria and Società Aerea Mediterranea before the Second World War.