ZUM4948047: Jan. 01, 1955 - Ushering in a New Era of transportation, the atomic powered submarine USS Naitilus, is pictured underway on her initial sea trial in Long Island Sound on January 17, 1955. The historic moment came at 11:01 a.m. when the Nautilus under nuclear power cast off and got underway from the Groton, Conn, dock of her builder, the Electric Boat division of General Dynamic Corporation. Public Health Relations Department, Electric Boat Division, General Dynamics Corporation / Bridgeman Images