This pirate cruise sails around the inner harbor from its starting/docking point in Fells Point. They offer an adult booze cruise which we thoroughly enjoyed, as well as kids cruises earlier in the day.
The booze cruise is BYOG (bring your own grog), and they supply music and a really good time.
I thought it would be cheesy but it sure wasn’t! We all said this was the most fun we’ve had in Baltimore.