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 Electric Boat is the company that built the American submarine NR-1, which is 45000.0 (millimetres) long. General Dynamics is the parent company of the General Dynamics Electric Boat Co, which is located in Groton, CT.