In 1929, the Regia Marina (Italian Royal Navy) awarded a contract to SIAI to produce the prototype of a new flying boat fighter for use as a catapult-launched aircraft aboard Condottieri-class cruisers.

In response, SIAI designed the S.67, a wooden, single-seat, monoplane flying boat powered by a 313-kilowatt (420-horsepower) Fiat A.20 V12 liquid-cooled engine driving a three-bladed pusher propeller.

The S.67's design allowed a team of six men aboard a cruiser to erect it on its catapult and have it ready for launch within five minutes.

Il Centro Sperimentali (The Experimental Center) began testing of the prototype in early March 1930, during which it crashed on 3 April 1930.

One of these was cancelled, but the other two entered service with the 162ª Squadriglia (162nd Squadron) of the 88° Gruppo Caccia Marittima (88th Maritime Fighter Group).