Hickinbotham Brothers Shipbuilders

To support the World War II demand for ships Hickinbotham Brothers built: Type V ship Tugboats, Tank Landing Barge, balloon barges and Coastal Freighter (design 381, 381 tons).

In 1942 Ronald Guntert and L. R. Zimmerman ran the company as a partnership on the Banner Island waterfront.

After World War II, Guntert and Zimmerman purchased Hickinbotham out and renamed the company Guntert & Zimmerman Construction.

In 1984 the company moved to Ripon, California on the Stanislaus River, as the business continues.

The Banner Island waterfront yard 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.