Skirmishes started in 1294 by Genoese ships harassing Venetian ships in the Aegean Sea. Genoese also harassed Venetians in Constantinople, emboldened by the Byzantine hostility to Venetians because of the events of the Fourth Crusade. In 1296 Venice openly declared war on Genoa.
Venetian ships threatened the Genoese presence in the Black Sea after capturing the Golden Horn, Constantinople's inner harbor. After, the fleet sailed into the Black Sea and Crimea, capturing a large port. Genoa retaliated by using their fleet to raid Venetian ships closer to home, in the Adriatic.
Venice sent a fleet of 95 ships into the Adriatic They encountered the Genoese fleet between the Dalmatian coast (now Croatia) and the island of Curzola. The fighting went very poorly for the Venetians, who ran their ships aground while trying to capture the Genoese ships. Of the 95 Venetian ships, 83 were destroyed, the rest fleeing.
Casualties were heavy on both sides. Genoa had many casualties, and the son of Genoese admiral Lamba Doria was killed, about which Doria said "Throw him overboard into the deep sea. What better resting place can we give him?"
The Venetians lost not only 7,000 to 9,000 men and dozens of ships, one of their number taken prisoner was a widely traveled man named Marco Polo. While in a Genoese prison, he wrote about his travels.
A treaty between the two maritime republics was signed the following year. The uneasy peace lasted for two generations this time. Venice had come out on top in the first war, Genoa in the second. The third time would see no clear victor and heavy losses for both sides. I'll tell you about the War of the Straits next time.



























