general_dynamics_electric_boat | parentcompany | general_dynamics <tsp> american_submarine_nr-1 | builder | general_dynamics_electric_boat <tsp> general_dynamics_electric_boat | locationcity | groton,_connecticut <sep> general dynamics electric boat (gdeb) is a subsidiary of general dynamics corporation it has been the primary builder of submarines for the united states navy for more than 100 years the company's main facilities are a shipyard in groton, connecticut, a hull-fabrication and outfitting facility in quonset point, rhode island, and a design and engineering facility in new london, connecticut 
the american submarine nr-1 was built by general dynamics electric boat co. found in groton. connecticut. the parent company of general dynamics electric boat co. is general dynamics.company's main facilities are a shipyard in groton connecticut and a design and engineering facility in new london, connecticut