Groupon is featuring a 2-hour Boston Harbor sunset cruise on the historic Roseway schooner today. Tickets are $35 and are available for August and September (see the Groupon website for date restrictions in those months). The ticket also includes a voucher for one drink aboard the vessel. The Roseway leaves from the Fan Pier Marina at 60 Northern Avenue in Boston.
Here is a prior BHB post about the beautiful and elegant Roseway.