Transportation
Dionysius the Elder of Syracuse introduces the quinquereme (a ship with five banks of rowers) to his navy, which already includes quadriremes. As a result, Syracuse becomes a major naval power, sweeping the Tyrrhenian and Adriatic seas free of pirates. Athens and other Hellenic cities soon begin adding the two new types of ship to their own navies. By 325 bce Athens has 43 quadriremes and 7 quinqueremes along with its main fleet of 360 triremes. See also 410 bce Transportation; 315 bce Transportation.




