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The Fleet  Our Rigs  List by Location  Transocean Amirante

Fleet Specifications

Transocean Amirante
The TRANSOCEAN AMIRANTE is a Modified Aker H3 design semi-submersible drilling unit capable of operating in moderate environments and water depths of 3,500 ft using 18¾in, 10,000 psi BOP and 21in OD marine riser. 
Rig Type Other Floaters 
Design Modified Aker H-3 
Builder Rauma Repola Oy, Finland 
Year Built 1978; Converted 1981; Upgraded 1997 
Classification DNV + 1A1, Column Stabilized Drilling Unit 
Flag Panama 
Accommodation 100 berths 
Helideck 86 ft x 86 ft; rated for Sikorsky S61-N helicopter 
Moonpool 19.7 ft x 19.5 ft 
Station Keeping Moored 
Max Drill Depth 25,000 ft / 7,620 m 
Max Water Depth 3,500 ft / 1,067 m 
Operating Conditions Significant Wave: 28 ft; Wind: 65 knots; Current: 2.1 knots 
Storm Conditions Maximum Wave: 70 ft; Wind: 100 knots 

Technical Dimensions

Length 243 ft  74 m 
Breadth 208 ft  63 m 
Depth 120 ft  37 m 
Operating Draft 67 ft  20 m 
Ocean Transit Draft 22 ft  7 m 
VDL - Operating 3,857 st  3,500 mt 

Capacities

Liquid Mud 2,105 bbls  11,819 cu ft  334 cu m 
Drill Water 11,284 bbls  63,354 cu ft  1,793 cu m 
Potable Water 2,428 bbls  13,632 cu ft  386 cu m 
Fuel Oil 16,832 bbls  94,503 cu ft  2,674 cu m 
Bulk Mud   10,915 cu ft  309 cu m 
Bulk Cement   6,569 cu ft  186 cu m 
Sack Material 7,422 sacks     

Drilling Equipment

Derrick Continental Emsco 180 ft x 40 ft x 40 ft; 454 mt nominal capacity 
Drawworks Continental Emsco C3, 3000 hp, 1½in line; Elmago auxiliary brake 
Motion Compensator Rucker Shaffer, 181 mt operating (453 mt pinned), 18 ft stroke 
Top Drive Varco TDS-4S, 590 mt 
Rotary Continental Emsco T-4950 with 49½in opening 
Pipe Handling BJ semi-automatic piperacking system Type V 
Mud Pumps 3 x Continental Emsco FB-1600, 1600 hp each 
Shale Shakers 4 x Derrick Cascade 
Desander See Mud Cleaner 
Desilter 1 x Derrick 420-T with 16 x 4in cones (1000 gpm) 
Mud Cleaner 1 x Derrick Hi-G with 2 x 12in and 20 x 4in cones 
BOP 2 x Cameron Type U 18 ¾in 10K double rams; 1 x Shaffer 18¾in 5K annular; Vetco H-4 connector 
LMRP 1 x Shaffer 5K 18¾in annular, Cameron Model 70 riser connector 
Diverter Vetco KFDS-500; 750 psi with 2 x 12in OD flowlines 
Control System Cameron BOP control system 
Riser 47 x Vetco HMF 21in OD riser; 75ft joints with 15,000 psi 3in ID C&K lines 
Riser
Tensioners
Rucker Shaffer & Control Flow: 1080 kips total 
Guideline
Tensioners
4 x Rucker 16 kips 40 ft travel 
Podline
Tensioners
2 x Rucker 16 kips 40 ft travel 
Choke & Kill Cameron 10,000 psi with 2 x adjustable chokes and 2 x remote Cameron WP chokes 
Cementing Dowell Schlumberger diesel driven 15K (third party) 

Machinery

Main Power 4 x Wartsila 12V-200 diesels (2,816 hp); 4 x ABB/AMG-630L6 generator 2100 kW 600 V 
Emergency Power 1 x Caterpillar D-398 diesel (860 hp) driving 1 x GE 500 kW generator 
Power Distribution 13 x Siemens 1200 amps SCRs, 750 V DC output 
Deck Cranes 1 x Aker, 100 ft boom 40 mt @ 30 ft; 1 x Bucyrus Erie, 80 ft boom 44 mt @ 20 ft; 1 x Liebherr, 100 ft boom 30 mt @ 30 ft 
Thrusters N/A 
Propulsion N/A 

Mooring Equipment

Winches 4 x Pusnes D75 EAX double drum electric driven 
Wire/Chain 16 x 2,100ft x 3 1/8in wire; 8 x 3,500ft x 3in K4 chains; 8 x 600 ft 3in ORQ chains 
Anchors 8 x 12 mt Stevpris anchors