IMAM designed the Ro.57 around the engines Italy could obtain in quantity, pairing two available powerplants to seek the performance needed for a long-range fighter. In concept, it resembles later twin-engine naval fighters such as the Tigercat and offered the range Italy badly needed. First flown in 1939, it did not enter service until 1943, when Italy's economy could no longer manufacture it in the intended numbers. Estimates range from about 50 aircraft plus a prototype to roughly 100, with a common estimate near 70 to 75. Repairs, conversions, and factory returns make wartime Italian airframe totals difficult to reconcile.
Notable Point · 27:53-30:02
The Ro.57's unrealized interceptor role
The twin-engine Ro.57 offered Italy a promising long-range interceptor, but light initial armament, modest available engine power, and delayed production constrained its impact.