The Z.501 Gabbiano (mew) single-engined military flying boat had long endurance, but wasn't very robust or seaworthy and suffered heavy losses during WWII. This modified Z.501, I-AGIL, set a seaplane distance record of 4130 km in May 1934, flying from Monfalcone to Massawa in Eritrea. A French seaplane flew 4335 km in June. I-AGIL then managed 4930 km (3060 miles) to Berbera, in Somaliland, in July 1934 - or Anno XII in the Fascist year count. Cantieri Riumiti dell'Adriatico (CRDA) was Cant's full name. Photo from: Fondazione Fiera Milano