History of the Peloponnesian War

About the same time the twenty ships of the Peloponnesians in Spiraeum, which we left chased to land and blockaded by an equal number of Athenians, suddenly sallied out and defeated the blockading squadron, took four of their ships, and sailing back to Cenchreae, prepared again for the voyage to Chios and Ionia. Here they were joined by Astyochus as high-admiral from Lacedaemon, henceforth invested with the supreme command at sea.