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Byford Dolphin in dry dock at Invergordon, Scotland, in 2008
History
Name
Byford Dolphin
Deep Sea Driller (1974–1978)
Owner
Byford Dolphin Pte. Ltd. (Fred. Olsen Energy)
Operator
Dolphin Drilling
Port of registry
Singapore
Panama (1974–2005)
Builder
Aker Group
Yard number
Aker Verdal A/S (695)
Laid down
31 October 1972
Completed
1 February 1974
Out of service
Laidup 2016
Identification
Call sign: 9VDG7
DNV ID: 09092
IMO number: 8750584
MMSI no.: 563601000
Fate
Beached Aliağa and scrapped 2019
Notes
[1][2]
General characteristics
Class and type
DNV class: 1A1 Column-stabilised Drilling Unit UKVS
Tonnage
11,792 GT
3,538 GT
Length
108.2 m (355 ft)
Beam
67.4 m (221 ft)
Depth
36.6 m (120 ft)
Speed
4.5 kn
Capacity
Variable Deck Lo: 3,021 t
Liquid Mud: 3,981 bbls (534 m3)
Bulk Mud/Cement: 547 t / 270 t
Crew
102 berths
Notes
[1][2]
Byford Dolphin was a semi-submersible, column-stabilised drilling rig operated by Dolphin Drilling, a Fred Olsen Energy subsidiary. It drilled seasonally for various companies in the British, Danish, and Norwegian sectors of the North Sea. It was registered in Hamilton, Bermuda.[1] In 2019, Dolphin scrapped the rig.[3]
The rig was the site of several serious incidents, most notably an explosive decompression in 1983 that killed four divers and one dive tender, as well as badly injuring another dive tender.[4]
^ abc"Byford Dolphin (09092)". Vessel Register for DNV. DNV. Retrieved 14 July 2010.[dead link]
^ ab"Byford Dolphin". Fred.Olsen Energy ASA. 24 February 2008. Retrieved 14 July 2010.
^Byford Dolphin diving incident casts long shadow 40 years on - Energy Voice, 4 Nov 2023
^Giertsen JC, Sandstad E, Morild I, Bang G, Bjersand AJ, Eidsvik S (June 1988). "An explosive decompression accident". American Journal of Forensic Medicine and Pathology. 9 (2): 94–101. doi:10.1097/00000433-198806000-00002. PMID 3381801. S2CID 41095645.
ByfordDolphin was a semi-submersible, column-stabilised drilling rig operated by Dolphin Drilling, a Fred Olsen Energy subsidiary. It drilled seasonally...
differentials, where the body may be forced through a small crevice, as in the ByfordDolphin diving bell accident. Total body disruption is invariably fatal to animals...
blown out. Decompression incidents do not occur solely in aircraft; the ByfordDolphin accident is an example of violent explosive decompression of a saturation...
remained the leading authority on this point of law.[needs update] Avis Dolphin, a survivor Ian Holbourn, a survivor Rita Jolivet, a survivor Charles T...
standby is expensive. Some notable saturation diving incidents include: ByfordDolphin diving bell accident – Explosive decompression of an occupied saturation...
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