Venice chose Antonio Grimani to command its fleet for reasons that had less to do with military genius than with money. He was 65 years old, a proven captain but an inexperienced fleet commander, and he had secured the position partly through a donation of 16,000 ducats to the state treasury and personal funding for 10 galleys. He was sent out without clear instructions about whether to fight offensively or defensively. The Venetian captains who gathered at Methoni in July 1499 advised him to steer the fleet to open sea — yet when the moment to act arrived, Grimani hesitated. Arrayed against him was Kemal Reis, an experienced corsair who had Sultan Bayezid II's full confidence and a mandate to wage large-scale war. The mismatch would define the entire campaign.

The Ottoman fleet that appeared in the Ionian Sea in the summer of 1499 numbered some 260 vessels and carried as many as 35,000 fighting men, including elite Janissaries. Its most formidable elements were two massive carracks called göke — a term derived from the word for cog — built under the direction of a renegade Venetian engineer named Gianni, who had worked at the Venetian Arsenal before defecting to Ottoman service. These ships were enormous even by the standards of a century later: 1,800 tons displacement, guns mounted to fire broadside, maintops large enough to hold forty arquebusiers. Their artillery could reach out and strike enemy ships before oars could close the distance. Venetian galleys, designed to ram and board, had no good answer. The göke were thought to be invulnerable — and on the waters off Navarino, they largely proved it.

The battle did not unfold in one decisive clash. It stretched across four separate engagements — 12, 20, 22, and 25 August 1499 — each offering the Venetians a chance they failed to take. On 12 August, eight Venetian galleys disobeyed orders and fled before contact. On the 20th, fireships fashioned to burn the Ottoman fleet were spotted and avoided. On the 22nd, Venetian and French guns drove Ottoman ships toward shore, but Grimani ordered retreat rather than finish the attack. French ships under Guy de Blanchefort and Prégent de Bidoux had come to help and left in disgust. Then, on 25 August, the Ottoman fleet finally slipped into the Gulf of Lepanto. The city would be besieged by land and sea. Grimani's own report on his captains — "the whole fleet with one voice cried 'Hang them! Hang them!'" — was the clearest summary of a campaign defined by mutual recrimination.

The aftermath of Zonchio fell hardest on Grimani. Venice was furious. His palace and shops were vandalized. He was arrested, returned home in chains, and banished to the island of Cres. And then — in one of history's more peculiar reversals — he was elected Doge of Venice in 1521, the highest office in the republic. The Ottoman Sultan Bayezid II rewarded Kemal Reis with ten of the captured Venetian galleys. The war continued for four more years, ending in 1503 with Venetian concessions and Ottoman consolidation of their position as a Mediterranean naval power. The guns of Zonchio had announced a new age. Not every announcement, it turned out, was fully understood by the people who heard it.

The battle took place in the Ionian Sea between Pylos and Methoni, in the open water off the western Peloponnese. There are no monuments here, no marked buoys, no commemorations at the site itself. The sea off Navarino is the same brilliant Ionian blue it has always been — deep, open, and indifferent to what happened on its surface. Navarino Bay itself, just to the east, is one of the largest and most sheltered natural harbours in the Mediterranean. It would see another decisive naval battle three centuries later, in 1827, when Allied fleets destroyed the Ottoman-Egyptian armada during the Greek War of Independence. History, at Navarino, has a tendency to repeat.