Fred. Olsen Energy
www.dolphindrilling.com 
Founded in 1965 as Aker Drilling Company and acquired by Fred. Olsen & Co. in 1976 and renamed Dolphin Services. Renamed Fred. Olsen Energy in 1997 and then Dolphin Drilling in 2018.
Borgholm Dolphin
1975
Borgny Dolphin
1977
Bulford Dolphin
1977