He was the victorious head of the Genoese naval forces in the conflict between the Republic of Genoa to Venice in the middle of the 14th century.

In 1352 he commanded the Genoese Navy in the Battle of the Bosporus against Niccolò Pisani, admiral of the Venetians, off the coasts of Constantinople: the victory was granted to the Genoese but it cost them so much that Doria lost the command.

The next year Venetians allied with Catalans defeated Genoa’s fleet led by Antonio Grimaldi off the coast of Sardinia.

[1] Doria was called back in 1354: he ravaged the coast of the Adriatic (Poreč) and completely captured the Venetian fleet under Pisani at the Battle of Sapienza or battle of Porto-Longo, between the fortresses of Modon (mod.

Marino Faliero, Doge of Venice, accepted the terms of peace imposed by Genoa and agreed to pay an indemnity of 200,000 florins.