Troubled waters

On your journey up the River Shannon towards Limerick, you and your crew have been captured after your galleon ship was attacked by pirates and plundered. You are now locked together on the pirate deck with the rest of the cargo, when all of a sudden you hear loud noises and a battle erupt. The pirate ship is now under attack and sinking. You have one hour to escape before the ship sinks and you with it. Don't forget to grab the treasure that was stolen from you.