The Stena Carron is a Harsh Environment dynamically positioned DP Class 3 drillship capable of drilling in water depths up to 10,000ft. The Stena Carron has on-board 2 x BOP’s, each 18¾” x 15,000psi Cameron “TL” BOP c/w ST Locks, and uses Cameron Load King riser.

General Information

Rig TypeDynamically Positioned Drillship
DesignMono-hull Drillship
Construction YardSamsung Heavy Industries
Year Delivered2008
ClassificationDNV: +1A1 Ship-shaped Drilling Unit (N) UKVS HELDK-SH Crane E0 F-AM DYNPOS-AUTRO DRILL (N)
Station KeepingDP Class 3, Kongsberg K-POS 32
Max Water Depth10,000 ft (upgradable to 12,000 ft)
Max Drilling Depth35,000 ft (upgradable to 40,000 ft)
HelideckDesigned for Sikorsky S92 & EH-101
Accommodation180 persons (upgradable to 220 persons)

Dimensions/ Loading

Moonpool25.6m x 12.48m
Operating Draft12m
Transit Draft8.5m
VDL (Operating)20,000 Mt @ 12m

Drilling Equipment

Mast/DerrickNOV Dual Hoisting and Drilling Tower
Hoist/DrawworksMain Well: 2,000,000 lbs/907 MT (upgradable to 2,500,000 lbs) Aux Well: 1,200,000 lbs/544 MT
Motion CompensatorActive & Passive (Main Well): 1,040,000 lbs/472 MT (Upgradable to 2,500,000 lbs)
Active & Passive (Aux Well): 840,000 lbs/381 MT
Top DriveMain Well: NOV HPS 1000 (Upgradable to 1250T Topdrive)
Aux Well: NOV HPS 750
Pipe HandlingNOV Dual Hydra - Racker 3 ½” to 13⅝”
Offline Stand Build1 x Off Line Stand Build + Torque Master
Mud Pumps4 x National FC2200 – 7500psi
Shale Shakers5 x NOV - VSM 300

Well Control Equipment

BOP18 ¾” x 15K Cameron TL (6 Ram)
Annulars1x Hydril GX (LMRP) (10k) + 1x Cameron DL Annular (10K) (BOP)
Wellhead Connector1 x 18 ¾” GE Vetco H4-SHD
Control SystemCameron MUX (BOP Fluid recovery sys)
Riser7,500’ Cameron LoadKing 3.5 (80’ Joints)
Riser Tensioners6 x N-Line tensioner system 2,500 Kips
Choke & Kill ManifoldCameron 3 1/16” – 15K
DiverterGE Vetco – CSO 500 – 60 ½” – 500psi


Liquid MudActive: 1004m³
Storage: 2345m³
Waste: 502m³
Drill Water 4464 m³
Potable Water 2052 m³
Fuel Oil10,805 m³
Bulk Cmt420m³
Base Oil490 m³
Brine490 m³
Sack Material7,500 sacks
Bulk Barite/Bentonite420m²

Machinery/ Hoisting/ Station Keeping Equipment

Main Power6 x Genset: Wartsila 16V32
Generator Rated Output: 9312kVA
Emergency PowerIntegrated in main power
DP SystemDP 3 (Kongsberg) :2 x HiPaP, 3 x DGPS, 2 x LTW
Thrusters6 x RR UUC-505, 5.5MW
Mooring system2x 12.675Mt Anchors
Deck Cranes3 x NOV KBC each rated for 85t/34t/17t. 1 x NOV Pipe handling KBC rated for 7.0t/3.5t.
Riser CraneNOV Gantry Crane 2x20Mt (w/o yoke)
BOP Handling350Mt Moonpool Skid 2 x 175Mt BOP overhead Crane