History of the Peloponnesian War
Thucydides
Thucydides. The history of the Peloponnesian War, Volume 1-2. Dale, Henry, translator. London: Heinemann and Henry G. Bohn, 1851-1852.
Some of the ships they lashed to their own and began to tow off empty, and one they took men and all; while in the case of some others, the Messenians, coming to their succour, and dashing into the sea with their armour, and boarding them, fought from the decks, and rescued them when they were already being towed off.
To this extent then the Peloponnesians had the advantage, and destroyed the Athenian ships; while their twenty vessels in the right wing were in pursuit of those eleven of the enemy that had just escaped their turn into the open gulf. They, with the exception of one ship, got the start of them and fled for refuge to Naupactus; and facing about, opposite the temple of Apollo, prepared to defend themselves, in case they should sail to shore against them.
Presently they came up, and were singing the paean as they sailed, considering that they had gained the victory; and the one Athenian vessel that had been left behind was chased by a single Leucadian far in advance of the rest.
Now there happened to be a merchant-vessel moored out at sea, which the Athenian ship had time to sail round, and struck the Leucadian in pursuit of her amid-ship, and sunk her.