History of the Peloponnesian War

When the Corinthian preparations were completed they took three days' provisions, and put out from Chimerium by night, ready for action.

Sailing with the dawn, they sighted the Corcyraean fleet out at sea, and coming towards them.

When they perceived each other, both sides formed in order of battle. On the Corcyraean right wing lay the Athenian ships, the rest of the line being occupied by their own vessels formed in three squadrons, each of which was commanded by one of the three admirals.

Such was the Corcyraean formation. The Corinthian was as follows: on the right wing lay the Megarian and Ambraciot ships, in the center the rest of the allies in order. But the left was composed of the best sailors in the Corinthian navy, to encounter the Athenians and the right wing of the Corcyraeans.