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NAGA 1 (former HAKURYU-3) Semi-Submersible Rig

Design Mitsubishi MD25-SP propulsion-assisted semi-submersible drilling rig
Overall Length 101 m including Helideck
Overall Breadth 79.0 m including anchor rack
Main Deck Elevation 37.5 m
Max. Variable Load 3,200 ton (Drilling)
Max. Operating Water Depth 984 ft (300 m)
Max. Drilling Depth 30,000 ft (9,000 m)
Displacement 30,912 ton
Quarters 120 beds
Class ABS, NK, IMO MODU Code A414
Ship Registration Panama
Construction Yard Hiroshima Shipyard & Engine Works, Mitsubishi Heavy Industries, Ltd.
Life enhanced and upgraded October 2012
Drawworks CONTINENTAL EMSCO-Mitsubishi / C-3TYPE II
Mud Pumps CONTINENTAL EMSCO-Mitsubishi / FB-1600 x 3
Top Drive VARCO / TDS-4S
BOP 18 3/4" / 10K BOP stack
Drill String Compensator NL Shaffer / 500K with 18 ft stroke
Riser Pipe Tensioners NL Shaffer / 160K (twin tensioner) x 4
Riser Pipes VETCO / 21" OD / MR-6C
Engines Daihatsu / 8VSHTC-26D 2,100PS x 4
Electricity Generators Mitsubishi Electric / CFC-DP x 4
Anchors Mitsubishi Electric Anchor Windlass x 4, Bruce FFTS Anchor(12 tons) x 8