Octavian's fleet was largely made up of smaller "Liburnian" vessels. His ships, though smaller, were still manageable in the heavy surf and could outmanoeuvre Antony's ships, get in close, attack the above-deck crew with arrows and ballista-launched stones, and retreat. Moreover, his crews were better-trained, professional, well-fed and rested. A medium ballista could penetrate the sides of most warships at close range and had an effective range of around 200 yards. Most ballistas were aimed at the marines on the ships' fighting decks.