Complex sentence: In the early 1930s the French Navy became interested in catapult launched floatplane fighters and the Société des Avions Bernard produced the twin float Bernard H 52 in response, deriving it from their earlier Bernard 20,74 and 260 land based fighter aircraft.
Split into simpler sentences: In the early 1930s the French Navy became interested in catapult launched floatplane fighters and the Société des Avions Bernard produced their Bernard H 52 in response. The twin float H 52 was derived from their earlier Bernard 20,74 and 260 land based fighter aircraft.