Noble Discoverer

Noble Discoverer


Rig Type Drillship
Rig Design Sonat Drilling Discoverer Class
Builder Namura Zonsho Yard
Year Built/Upgraded 1976 / 2007
Classification DNV +1A1, Ship Shaped Drilling Unit
Flag Liberia
MODU Code 1979
Water Depth 1,000 ft
Drilling Depth 20,000 ft
Variable Deck Load 17,287 kips
Hook Load 1,000 kips
Setback Capacity 500 kips
Quarters Capacity 128
Draft (Operating/Transit) 27 ft / 26 ft Moonpool 22 ft dia. (round)
Depth 38 ft Length 514 ft Breadth 85.3 ft


Derrick MH/Pyramid 40 ft x 40 ft x 175 ft; 1,000 kips
Drawworks IDECO E-2100; 1,600 hp
Top Drive NOV TDS-3S
Rotary National C-495, 49-1/2 in
Iron Roughneck Maritime Hydraulics HRN-1898
BOP Cameron Type U; 4 ram; 18-3/4 in x 10k psi
Motion Compensator NOV Shaffer DSC-400
Riser Tensioner/Stoke Shaffer; 80 kips; 12-1.2 ft stroke
Riser Details NOV Shaffer DT2; 50 ft LOA x 21 in ID
LMRP (2) Hydril 18-3/4 in x 5 psi annulars
Control System NOV 42-Line Hydraulic
Pipe Handling Systems BJ Racking System, 3-arm
Solids Control System (4) Derrick FLC-514
Diverter Vetco KFDS
Tree Storage/Handling L14.8 ft x W13.5 ft, 170,000 lbs
Cranes (2) Liebherr MTC-1900-50D Litronic Pedestal cranes, 50 mt SWL, 120 ft. boom
Mud Pumps (2) Emsco FA-1600; (1) FB-1600; 1,600 HP
Engines (6) Caterpillar 3512, 1100 kw each
Station Keeping 8-point, turret moored
Thrusters 3x docking thrusters


Fuel 10,398 bbls Brine Storage 3,415 bbls
Drill Water 2,434 bbls Base Oil Storage Duel use with Brine Tanks
Bulk Storage 13,382 cu ft Liquid Mud (Active+Reserve) 2,660 bbls
Sack Storage 8,839 sacks
For more information about the capabilities of our fleet, please contact:
Noble Corporation plc
Devonshire House
1 Mayfair Place
London W1J8AJ
Noble Drilling Services Inc.
13135 South Dairy Ashford, Suite 800
Sugar Land, TX 77478
Tel: +1281.276.6100
These specifications are intended for informational purposes only. Noble makes no warranties about the accuracy or completeness of any information contained herein.