37°57′14″N 121°18′10″W / 37.953860°N 121.302901°W
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Colberg Boat Works was a shipbuilding company in Stockton, California on the Stockton Channel. The original WWII office building burned to the ground in 2022. It was being prepared for moving to Brandon Island.To support the World War II demand for ships Colberg Boat Works built: Minesweepers, Type V ship Tugboats, and Submarine chasers. The minesweepers were an Aggressive-class minesweeper and Agile-class minesweeper class. Colberg Boat Works was opened by two brothers in the late 1890s, William and Henry J Colberg. After World War II, Wilton, Jack and Gordon Colberg sons of Henry Colberg took over the company. The shipyard closed in 1990s. The yard located at 848 West Fremont Street, Stockton, California. The Colberg Boat Works yard was next to the Stephens Bros. Boat Builders yard. Colberg Boat Works was on the deepwater port on the Stockton Ship Channel of the Pacific Ocean and an inland port located more than seventy nautical miles from the ocean, on the Stockton Channel and San Joaquin River-Stockton Deepwater Shipping Channel (before it joins the Sacramento River to empty into Suisun Bay.[1]