If your interests run to big ships and naval history, you'll want to ride the ferry from Seattle to Bremerton. Bremerton is home to the Puget Sound Naval Shipyard, where mothballed U.S. Navy ships have included the aircraft carriers USS Nimitz and USS Midway and the battleships USS Missouri and USS New Jersey. The Turner Joy is docked about 150 yards east of the Washington State Ferries terminal. Combination Turner Joy -Harbor Tour tickets are also available.
Admission is free.
The reason this museum is here is that the Bangor Navy Base, home port for a fleet of Trident nuclear submarines, is nearby. The base is on Hood Canal, a long narrow arm of Puget Sound.