Battle of Modon: Genoese fleet under Jean Le Maingre (Marshal Boucicaut) is defeated by the Republic of Venice at Modon in the Peloponnese.

The Battle of Modon was fought on 7 October 1403 between the fleets of the Republic of Venice and of the Republic of Genoa, then under French control, commanded by the French marshal Jean Le Maingre, better known as Boucicaut. One of the last clashes in the Venetian–Genoese wars, the battle ended in a decisive Venetian victory.