The Scoiattolo (Italian for squirrel) entered production in 1951 as the AV 43. It was given its distinctive name from 1953, a reflection of its agility and small size. Its length ranged from 4.1 to 4.3 metres, a size best suited to lake cruising. It is the only post-war Riva boat that is powered by an outboard engine, and was available in two finishes: white or transparent. 137 boats were built in total.