History of the Peloponnesian War

About the same time during this summer the Athenians sent also on a cruise round the Peloponnesus thirty ships with Asopius son of Phormio as commander; for the Acarnanians had requested them to send them as commander either a son or some other kinsman of Phormio's.

And the ships as they sailed past ravaged the coast of Laconia.

Afterwards Asopius sent most of the ships back home, but had twelve with him when he reached Naupactus. Then later, having called out all the forces of the Acarnanians, he made an expedition against Oeniadae, sailing with the ships up the Achelous, while his army on land ravaged the country.