The most common theory on the arrangement of oarsmen in the new ship types is that of "double-banking", i.e., that the quadrireme was derived from a bireme (warship with two rows of oars) by placing two oarsmen on each oar, the quinquereme from a trireme by placing two oarsmen on the two uppermost levels

10 Perfectly Sized Ships for play with Rome: Rising Empires

Individual Measurements: 15.96mm x 53mm x 16mm