History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
Now he did just what they expected him to do; when he saw them put to sea, fearing for the safety of the place, which was unprotected, he reluctantly and in haste embarked his crews and sailed along the coast, the Messenian army moving along the shore to support him.
And when the Peloponnesians saw that they were skirting the coast in single file and were already inside the gulf and close. to shore, which was just what they most desired, at one signal they suddenly veered about, bore down with ships in line as fast as each could upon the Athenians, hoping to cut off all their ships.
But eleven of these, which were in the lead, got past the Peloponnesian wing, as it swung round, and escaped into the open water; but the rest were overtaken, driven ashore as they attempted to escape, and disabled, and all the Athenians on them who did not succeed in swimming ashore were slain.
Some of the ships they made fast to their own and proceeded to tow away empty—though they had already captured one with its crew—but some others, which were already in tow, were taken from them by the Messenians, who came to the rescue, rushed armed as they were into the sea, boarded the ships, and fought from their decks.
In this quarter, then, the Peloponnesians were victorious and had disabled the Athenian ships; but the twenty ships covering their right wing were pursuing the eleven Athenian ships which had got past them as they swung round and had escaped into the open water. And all the eleven except one reached Naupactus ahead of them, and riding at anchor off the Temple of Apollo, prows outward, made ready to defend themselves if the enemy put in toward the shore to attack them.
When the Peloponnesians came up they were singing the paean as they rowed as if they were victorious already, and one Leucadian ship, far ahead of the rest, was chasing the single Athenian ship which lagged behind.