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Vallejo and Mare Island are divided by the Mare Island Strait, which joins the Bay where San Pablo Bay meets the Carquinez Strait. The north end of the Mare Island Strait becomes the Napa River. Vallejo, named for General Vallejo who had his rancho here, is a seafaring town with a long heritage. Mare Island was formerly a Naval Shipyard where hundreds of ships were built and repaired, starting in 1854, when Vallejo was the state capitol. During World War II the shipyard employed more than 46,000 people and was one of the most important ship repair facilities in the Pacific.