History of the Peloponnesian War

It was no wonder, therefore, if the Syracusans and their allies thought that it would win them great glory if they could follow up their recent victory in the sea-fight by the capture of the whole Athenian armada, without letting it escape either by sea or by land.

They began at once to close up the Great Harbor by means of boats, merchant vessels, and galleys moored broadside across its mouth, which is nearly a mile wide, and made all their other arrangements for the event of the Athenians again venturing to fight at sea. There was, in fact, nothing little either in their plans or their ideas.