 Lake Union Drydock Company was founded by Otis Cutting and John McLean in 1919, to build and service watercraft vessels.Located along the eastern shore of Lake Union, Lake Union Drydock Company is among the longest operating shipyards in the United States.Accessible via the Hiram A. Chittenden (Ballard) Locks, Lake Union provides refuge from tides as well as the marine life and corrosive saltwater of Puget Sound.