Rathlin East was one of the last lighthouses on the Irish coast to go automatic, holding out until 1995.
Hurried signals brought the ship's doctor ashore and he quickly arranged for Denny to be transferred to the ship's hospital where he was kept alive until the ship got to Liverpool, successfully avoiding all icebergs on the way. An ambulance was waiting on the dock and he was rushed to hospital where his life was saved but the arm was operated above the elbow.
Denny's career as a lightkeeper was over and he moved to England with his wife and family. Struggling to find work, he contacted Irish Lights and, through their intervention, he got a job with Chance Brothers in Birmingham, the famous lighthouse lens manufacturers. Here he worked as a very popular gatekeeper for twenty years. One-armed Denny Duff died in 1958. (Information from Thomas Tag - "The Anatomuy of a Lighthouse Story")