Mare Island Naval Shipyard, Drydock No. 2, California Avenue, east side near Ninth Street, Vallejo, Solano County, CA
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Significance: Building DD2, commonly called Dry Dock 2, is a contributing element of the Mare Island Historic District. Its significance relates chiefly to its historic role in the ship repair and construction business at Mare Island. This dry dock gave Mare Island the capacity to accept work on any ship of the Navy that was then afloat or under design. The existence of this dry dock helped preserve Mare Island's position as the preeminent Navy shipyard in California, at a time in which the usefulness of this inland facility was under scrutiny by Navy planners and political leaders. Dry Dock 2 would continue to serve as the backbone of the Mare Island operation between its completion in 1910 and construction of the Dry Docks 3 and 4 in the late 1930s and 1940s.
Survey number: HABS CA-1543-BR
National Register of Historic Places NRIS Number: 75002103