Come aboard one of our vessels for the perfect mix of views, history, and entertainment! Join us in the Summer and Fall for Sunset Cruises around the harbor and enjoy amazing views of Boston’s beautiful skyline and the historic USS Constitution as the sun sets behind the city. If you are seeking an adventure, take a cruise on our Pirate Ship the Formidable for historical harbor tours and sunsets that come alive with crew climbing aloft, hoisting square sails, and firing the cannon. Every Thursday, Friday and Saturday evening there is always a fun cruise to be had! Mass Bay Lines also offers private charters for birthday parties, weddings, corporate events, and much more!