History of the Peloponnesian War

Subsequently the Ionians attained to great naval strength in the reign of Cyrus, the first king of the Persians, and of his son Cambyses, and while they were at war with the former commanded for a while the Ionian sea. Polycrates also, the tyrant of Samos, had a powerful navy in the reign of Cambyses with which he reduced many of the islands, and among them Rhenea, which he consecrated to the Delian Apollo. About this time also the Phocaeans, while they were founding Marseilles, defeated the Carthaginians in a sea-fight.

These were the most powerful navies. And even these, although so many generations had elapsed since the Trojan war, seem to have been principally composed of the old fifty-oars and long-boats, and to have counted few galleys among their ranks.

Indeed it was only shortly before the Persian war and the death of Darius the successor of Cambyses, that the Sicilian tyrants and the Corcyraeans acquired any large number of galleys. For after these there were no navies of any account in Hellas till the expedition of Xerxes;