History of the Peloponnesian War

as the Aeginetans and Athenians, and whoever else had any, possessed but small ones, and of those the greater part fifty-oared vessels; and it was only lately that Themistocles persuaded the Athenians, when at war with the aeginetans, and when the barbarian was also expected, to build those very ships with which they fought him by sea; and these were not yet decked throughout.

Of such a [deficient] character then were the navies of the Greeks, both the ancient ones and those which were built afterwards. And yet those who paid attention to them obtained the greatest power, both by income of money and dominion over others: for they sailed against the islands, and subdued them; especially those who had not sufficient extent of country.