This Penn. corp. built more WWI destroyers at its Quincy, Mass. yard than were built at all other U.S. yards combined
[DOC] [TLE] The Naval History and HNSA Guide to U.S. Museum Ships - USNI ... [PAR] May 22, 2015 ... More often than not at the end of their service these ships are sold to allies, ... 
1930s, the Portsmouth Navy Yard built 79 submarines between 1 July 1940 and 
1 July 1945.