History of the Peloponnesian War

Immediately after this, the same summer, the Peloponnesians, who refused to come out against the enemy, as holding themselves with their whole fleet too weak to give them battle, and were now at a stand how to get money for the maintenance of so great a number of galleys, sent Clearchus, the son of Rhamphias, with forty galleys, according to the order at first from Peloponnesus, to Pharnabazus.

For not only Pharnabazus himself had sent for and promised to pay them, but they were advertised besides by ambassadors that Byzantium had a purpose to revolt.

Hereupon, these Peloponnesian galleys, having put out into the main sea to the end that they might not be seen as they passed by, and tossed with tempests, part of them, which were the greatest number, and Clearchus with them, got into Delos, and came afterwards to Miletus again; but Clearchus went thence again into the Hellespont by land and had the command there; and part under the charge of Helixus, a Megarean, which were ten sail, went safely through into the Hellespont and caused Byzantium to revolt.

And after this, when they of Samos heard of it, they sent certain galleys into Hellespont to oppose them and to be a guard to the cities thereabouts; and there followed a small fight between them of eight galleys to eight, before Byzantium.