The Tregoning Boat Company was originally established as the Proctor Boat Company in approximately 1900 by George R. Proctor. In 1904, Proctor sold the company to his brother-in-law Frank Tregoning, who renamed it the Frank Tregoning Boat Company. The company primarily built steel-hulled boats, but also designed and built yachts to order, including the Sans Souci II for D. G. Schmitz, which was later commissioned to serve in World War I. In 1907, the newly renamed Tregoning Boat Company moved from its original location on Elliott Avenue to a location on Seaview Avenue in Ballard. Tregoning’s best-selling boats were lifeboats which were used around the area and on all the Puget Sound ferries. In 1918, the Tregoning Sawmill opened in Ballard Beach, and in 1920, the Tregoning Sash and Door factory opened as well. The factory manufactured the windows and doors for the Olympic Hotel in Seattle and closed in 1926 after a large fire. Jim Tregoning, Frank’s son, took over the ownership of the company in 1936. Under him, Tregoning became the largest West Coast manufacturer of metal lifeboats during World War II. In 1946, the yard was destroyed by arson, including the building containing the wooden boat shop, a truck, a new 26’ boat, and other boats. Tregoning Boat Company became Tregoning Industries in 1945, and designed a new seine fishing boat with a mast design that soon became the industry standard. In 1952, Jim Tregoning began working in management at the Seattle Shipbuilding and Dry Dock Corporation.