As long as you are not in a Windlane, Mack the Shark's ship should attack you. If it does not, I recommend talking to support by either using e-mail (with an e-mail address of email@example.com) or using the Help Menu above (the Orange Question Mark) and clicking on Contact Support. If you do use the e-mail option, include your account name and the name of the Pirate you are having this trouble with and any other relevant data. I am sure they will be able to help you but you will have to be patient - it can take 2 to 3 days to get a response. Make sure you use the e-mail account associated with you Priate101 account to send the e-mail message.