The Battle of Settepozzi was fought in the first half of 1263 off the island of Settepozzi (the medieval Italian name for Spetses) between a Genoese–Byzantine fleet and a smaller Venetian fleet. Genoa and the Byzantines had been allied against Venice since the Treaty of Nymphaeum in 1261, while Genoa, in particular, had been engaged in the War of Saint Sabas against Venice from 1256. In 1263, a Genoese fleet of 48 ships, which was sailing to the Byzantine stronghold of Monemvasia, encountered a Venetian fleet of 32 ships. The Genoese decided to attack, but only two of the four admirals of the Genoese fleet, and 14 of its ships took part and were easily routed by the Venetians, who captured four vessels and inflicted considerable casualties.