Besides the main hull, the aircraft was fitted with two side floats located under the central wing set, acting as outriggers which stabilized the aircraft during static floating, takeoff and landing. Caproni had Alessandro Guidoni, one of the most important seaplane designers of the time, create the hull and floats, the hydrodynamic surfaces that connected them and the two small hydrofoils located close to the nose of the aircraft: Guidoni designed new and innovative floats for the Transaereo to reduce dimensions and weight.