Trireme Olympias - Sea Trials in Greece, early 1990's For more info: www.trireme.org Trireme in New York City - 2012 39 Broadway, Suite 1810 New York, NY 10006 212-483-0340
During the First Punic war the Romans lost entire fleets to storms. 100s of ships and 100s of 1000s of men. By the time of the Punic Wars Rome and Carthage primarily relied on Quinqueremes which were larger and heavier than triremes like the Olympias. Ships like them actually tended to fare better in rough weather than the triremes. Although it's worth noting the Romans were poor sailors by the standards of the ancient world so perhaps the Greeks or Phoenicians might've fared better. So yeah, storms in triremes were probably pretty horrendous.