Base Property and Historical Use “The Mare Island Naval Shipyard (MINS) was the first United States naval station established on the Pacific Coast. It is located in Solano County, California, and approximately 25 miles northeast of San Francisco. The Napa River (Mare Island Strait) separates the peninsula shipyard from the City of Vallejo. The Navy … More William R. Stowell Designed Railroad Crossing on Nuclear Carrying Rail for Mare Island Naval Shipyard, Vallejo, California (1985)