The Meridionali Ro.43 was based on the land based Ro.37.
The Meridionali Ro.43 was used primarily as a catapult launched seaplane. It was assigned to Italian Navy ships, with cruisers carrying two Ro.43s, and battleships could carry up to four Ro.43s.
The structure of the Ro.43 was composite. The wings could be folded backwards for easier storage.