Byford dolphin decompression accident (photo post with information) edited with photo and info on nov. Byford dolphin accident on , at a drilling field in the norwegian section of the north sea, a diving bell was hauled up from beneath the ocean and attached to the saturation chambers. Byford dolphin was registered in hamilton, bermuda, [3] and drilled seasonally for various companies in the british, danish, and norwegian sectors of the north sea. This incident cost five people their lives, while one was seriously injured. That made diving the riskiest occupation in the offshore business. ...