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General Dynamics is the parent company of the General Dynamics Electric Boat Co. located in Groton, CT. They built the American submarine NR-1 which is 45000 mms in length.
General Dynamics Electric Boat | parent company | General Dynamics American submarine NR-1 | builder | General Dynamics Electric Boat General Dynamics Electric Boat | city | Groton, Connecticut American submarine NR-1 | length | 45000.0 (millimetres)