Dolphin Drilling Holdings Limited is an offshore drilling rig company headquartered in Aberdeen, Scotland, United Kingdom with its main subsidiary Dolphin Drilling AS located in Sandnes, Norway. Until 2019, Dolphin Drilling had its headquarters in Oslo, Norway. The company offers services for the offshore industry within offshore drilling. Dolphin Drilling is one of the oldest and most trusted global drilling contractors, with a 60-year legacy of excellence in offshore drilling, emphasising safety and operational performance. Wikipedia