Captain Mick from Challenge Australia will take the heartiest seafarers on a hunt for pirates at Williamstown Boat Day.
The predictable pirates will have kidnapped lunch, and it may have to come down to a water-balloon war to get it back.
Parents can relax on dry land and enjoy a bbq lunch with live music while the ships are at battle.
Williamstown Boat Day, the hunt for pirates is on April 5.