National Steel and Shipbuilding Company [SEP] industry
National Steel and Shipbuilding Company
National Steel and Shipbuilding Company, commonly referred to as NASSCO, is an American shipbuilding company with three shipyards located in San Diego, Norfolk, and Mayport. It is a division of General Dynamics. The San Diego shipyard specializes in constructing commercial cargo ships and auxiliary vessels for the US Navy and Military Sealift Command; it is the only new-construction shipyard on the West Coast of the United States. The Virginia shipyard primarily performs ship repairs and conversions for the U.S. Navy.
History.
of Power-Line Frequencies 133⅓ to 25 Hz", Industry Applications Magazine, IEEE, Sep/Oct 2000, Volume 6, Issue 5, Pages 12–14, .
- Rushmore, D.B., "Frequency", AIEE Transactions, Volume 31, 1912, pages 955–983, and discussion on pages 974–978.
- Blalock, Thomas J., "Electrification of a Major Steel Mill – Part II Development of the 25 Hz System", Industry Applications Magazine, IEEE, Sep/Oct 2005, Pages 9–12,