Naupactus (Peloponnesian War).
Fought 429 B.C. between 20 Athenian ships, under Phormio, and 77 Peloponnesian ships, under Cnemas. The Athenians were entrapped by Cnemas at the entrance to the Bay of Naupactus, and 9 of his vessels driven ashore. The remaining 11 fled towards Naupactus, closely pursued by the Peloponnesians, when the rearmost of the flying Athenians suddenly turned, and rammed the leading ship of Cnemas' squadron. The pursuers hesitated, and the rest of the Athenians then returned, and gained a complete victory, taking 6 ships, and recovering 8 of the 9 which had run ashore.