History of the Peloponnesian War

Meanwhile the Syracusans and their allies in Sicily had brought up to the squadron guarding Messina the reinforcement which we left them preparing, and carried on the war from thence,

incited chiefly by the Locrians from hatred of the Rhegians, whose territory they had invaded with all their forces.

The Syracusans also wished to try their fortune at sea, seeing that the Athenians had only a few ships actually at Rhegium, and hearing that the main fleet destined to join them was engaged in blockading the island.

A naval victory, they thought, would enable them to blockade Rhegium by sea and land, and easily to reduce it; a success which would at once place their affairs upon a solid basis, the promontory of Rhegium in Italy and Messina in Sicily being so near each other that it would be impossible for the Athenians to cruise against them and command the strait.

The strait in question consists of the sea between Rhegium and Messina, at the point where Sicily approaches nearest to the continent, and is the Charybdis through which the story makes Ulysses sail; and the narrowness of the passage and the strength of the current that pours in from the vast Tyrrhenian and Sicilian mains, have rightly given it a bad reputation.