History of the Peloponnesian War

the Syracusan squadron went to Locri, and one of the merchantmen from Peloponnese coming in, while they were at anchor there, carrying Thespian heavy infantry,

took these on board and sailed along shore towards home. The Athenians were on the look-out for them with twenty ships at Megara, but were only able to take one vessel with its crew; the rest getting clear off to Syracuse.

There was also some skirmishing in the harbor about the piles which the Syracusans had driven in the sea in front of the old docks, to allow their ships to lie at anchor inside, without being hurt by the Athenians sailing up and running them down.

The Athenians brought up to them a ship of ten thousand talents' burden furnished with wooden turrets and screens, and fastened ropes round the piles from their boats, wrenched them up and broke them, or dived down and sawed them in two. Meanwhile the Syracusans plied them with missiles from the docks, to which they replied from their large vessel; until at last most of the piles were removed by the Athenians.

But the most awkward part of the stockade was the part out of sight: some of the piles which had been driven in did not appear above water, so that it was dangerous to sail up, for fear of running the ships upon them, just as upon a reef, through not seeing them. However divers went down and sawed off even these for reward; although the Syracusans drove in others.