When the future Doge Lorenzo Tiepolo destroyed the Genoese fleet in 1257, Genoa allied with Michael VIII Palaeologus, who in 1261 captured Constantinople, putting an end to the Latin Empire and awarding Genoans the privileges formerly held by Venetians. Venice replied by building a large fleet which again defeated the Genoese in Settepozzi in 1263.
This sequence of events occurred when the future Doge Lorenzo Tiepolo destroyed the Genoese fleet in 1257, prompting Genoa to form an alliance with Michael VIII Palaeologus, who captured Constantinople in 1261, thus ending the Latin Empire and giving Genoa the privileges previously held by Venice. In response, Venice built a powerful fleet that ultimately defeated the Genoese again in Settepozzi in 1263.