For after these there were no navies of any account in Hellas till the expedition of Xerxes; Aegina, Athens, and others may have possessed a few vessels, but they were principally fifty-oars.

It was quite at the end of this period that the war with Aegina and the prospect of the barbarian invasion enabled Themistocles to persuade the Athenians to build the fleet with which they fought at Salamis; and even these vessels had not complete decks.
The navies, then, of the Hellenes during the period we have traversed were what I have described.

All their insignificance did not prevent their being an element of the greatest power to those who cultivated them, alike in revenue and in dominion.

They were the means by which the islands were reached and reduced, those of the smallest area falling the easiest prey.

Wars by land there were none, none at least by which power was acquired; we have the usual border contests, but of distant expeditions with conquest for object we hear nothing among the Hellenes.
There was no union of subject cities round a great state, no spontaneous combination of equals for confederate expeditions; what fighting there was consisted merely of local warfare between rival neighbours.