History of the Peloponnesian War

On the next day the thirty Attic ships and as many of the Corcyraean as were seaworthy put to sea and advanced against the harbour at Sybota, where the Corinthians lay at anchor, wishing to see whether they would fight.

But the Corinthians, although they put out from shore and drew up in line in the open sea, kept quiet: for they had no thought of beginning a fight if they could avoid it as they saw that fresh ships had arrived from Athens and that they themselves were involved in many perplexities, both as regards guarding the captives whom they had in their ships and the impossibility of refitting their ships in a desert place.

What they were more concerned about was the voyage home, how they should get back, for they were afraid that the Athenians would consider that the treaty had been broken, since they had come to blows, and would not let them sail away.