The most bizarre facet of ancient naval power was the general method of manning the triremes, a mixture of private and public finance and control that was common practice in most of the city-states. Each year at Athens, for example, four hundred of the wealthiest citizens were put on notice as being liable for obligation as trierarchs (trireme commanders), which entailed, among other responsibilities, active command of a warship at sea. Because the fleet during the war numbered about 300 ships—at one point in the war 250 triremes were at sea at the same time—three out of four annual designees
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