General_Dynamics_Electric_Boat | parentCompany | 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)
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.