GENERAL
Name: Borgsten Dolphin
Flag: Singapore
Owner: Fred. Olsen Energy ASA
Manager: Dolphin Drilling Ltd.
Year Built: 1975
Builder: Aker Group; Nylands Mekaniske Verksted, Norway; Upgraded 1985
Design: Enhanced Aker H3, Self Propelled Semi-Submersible
Classification: DNV + 1A1, Column Stabilised Drilling Unit

MAIN DIMENSIONS
Length: 355 ft (108,2 m)
Breadth: 221 ft (67,4 m)
Depth: 120 ft (36,6 m) from Main Deck

OPERATING PARAMETERS
Water Depth: 1500 ft (457,2 m)
Maximum Drilling Depth: 20,000 ft (6097 m)
Transit Speed: Approx. 4,5 knots

CAPACITIES
Variable Deck Load: 3200 mt operating
Liquid Mud: 1700 bbls
Bulk Mud/Cement: 31931 ft3/ 14901 ft3

DRILLING EQUIPMENT
Derrick: Maritime Hydraulics 160 x 40 x 40 ft, top 18 x 18 ft; Static Hookload capacity 1,250,000 lbs  
Drawworks: National 1625-DE 
Rotary: National with 49 ½” opening
Topdrive: National Oilwell PS2 500
Riser Tensioners: 6 x Rucker 80,000 lbs, 50 ft travel (480,000 lbs total capacity) 
Motion Compensators: Rucker DSC-18-400-L-C-E; 500,000 lbs compensating and 1,000,000 lbs static load capacity
Mud Pumps: 3 x National 12-P-160

MACHINERY
Main Power: 4 x Hedemora V18/12A rated 2200 hp (4 x 1500 KW)
Emergency Power: 1 X MTU 8V396, Max continuous output 675 KW
Propulsion: In-line propulsion, 2 x 1700 bhp

SUBSEA SYSTEMS
BOP: 1 x Cameron 18 ¾”, 10k
Control System:  Koomey 26240-3S direct Hydraulic system
Diverter: Regan KFDS
Choke and Kill: 10k

MOORING
Winches: 4 x Brattvaag single hydraulic windlass units + 4 x Pusnes double electric driven windlass units 
Wire/Chain: 12 x 4500 ft x 3” ORQ K3/K4 chain 
Anchors: 12 Anchors: 8 x Vicinay LWT 30,000 lbs and 4 x Delta Flipper HHP 22,000 lbs

CRANAGE
1 x Aker electric hydraulic 40/15, 40 mt @ 40 ft + 1 x Brattvaag electro hydraulic, 50 mt @ 36 ft

ACCOMMODATION
100 berths

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