The Piscataqua sails from the Gundalow Company's dock at Prescott Park, at the end of Water Street.  If navigating on road by GPS enter “60 Marcy Street” in Portsmouth. Water Street is a private alley approximately 50 yards down the street from our gift shop, and across the street from the restaurant Puddle Dock. The dock is located at the end of Water Street. If you visit the Gundalow Company's gift shop at 60 Marcy Street they will be happy to point you in the right direction.