Elliott Bay - Ballard Locks - Lake Union Sightseeing Cruise. Our 2.5-hour tour takes you through the saltwater of Puget Sound and the freshwater of Lake Union via the Hiram M. Chittenden Locks, more commonly referred to as Ballard Locks. Enjoy the live narration on our Seattle harbor tour, then experience a one-of-a-kind event as we travel through the locks themselves. See how they work as the boat is lifted to the freshwater level. We'll learn about Seattle's fishing communities, the Deadliest Catch boats, the boathouse community and Gas Works Park. Your tour also includes a 15-minute motorcoach transfer to or from the pier. Book this tour and Save 12% Off Elliott Bay - Ballard Locks - Lake Union Sightseeing Cruise.