[castlegreyskull]

That submarine, the USS SAN FRANCISCO survived by suberb engineering from Electric Boat. When it hit the under sea mountain at all ahead flank, it tore open two of its three forward main ballast tanks. If it hit the third of the three forward main ballast tanks the ship definately would have been a complete lost. It was able to provide low prssure air to its remaining forward ballast tank, as well as its 2 aft main ballast tanks.

Electric Boat and Northgrup Gruman have no interest in designing a submarine with dual hulls. Back in the 1950s when there was a submarine race the Soviet used the dual hull design and we went our way with a single hull design.

[Pan_Yan]

Electric Boat was the principal designer of Navy submarines for many years. However, the Navy decided to develop an alternative design capability, and in November 1969 awarded a design contract for the SSN-688 class nuclear attack submarine to Newport News Shipbuilding and Dry Dock Company (Newport News).

Source - globalsecurity.org

688's were designed by NNS&DD. The general concensus from those I asked who served on boats built by both shipyards NN built better. Either one is superior to what anyone else in the world can produce, however.

[Al B.]

That submarine, the USS SAN FRANCISCO survived by suberb engineering from Electric Boat.

The San Francisco was built at Newport News and they were also the lead design yard for the Los Angeles-class boats.