Deepwater Nautilus - Transocean

1 These specifications are intended for general reference purposes only, as actual equipment and specifications may varybased upon subsequent changes, the contract situation and customer needs. All equipment shall be operated andmaintained at all times, in compliance with Transocean standard operating manuals, policies and procedures, and within itsstated operational limits or continuous rated capacity, in order to assure maximum operational Notice: This rig, its systems, components, and/or equipment in useon this rig, may be protected by one or more USand/or foreign NAUTILUSG eneral DescriptionDesign / Generation Reading and Bates Falcon Constructing Shipyard Hyundai South KoreaYear Entered Service / Significant Upgrades 2000 / 2007 Classification ABS, +A1 Flag VanuatuDimensions 374 ft.

2 Long x 308 ft. wide x 136 ft. deepDrafts 76 ft. operating / 29 ft. transitAccommodation 166 personsDisplacement 51,735 st operating / 39,129 st transitVariable Deck 9,701 st operating / 5,748 st transitTransit Speed up to knotsMaximum Water Depth 8,000 ft. outfitted (operated in 9600 )Maximum Drilling Depth 30,000 SEMI-SUBMERSIBLED rilling EquipmentDerrickDreco, 180 ft. high, with 48 ft. x 48 ft. Capacity2,000,000 lbs. gross nominal capacityDrawworksNOV AHD1000 GE 6,900 hp. 1000stRotary TableVarco hydraulic with a 60-1/2 inch opening, rated at 1,000 DriveVarco TDS-1000 AC, with 1000 st capacity rated to 65,500 continuous drilling Handling2 x PRS-4i; Varco AR3200 Iron Pumps4 x National 14-P-220 triplex pumps, each driven by 2 x Mud SystemRated for 7,500 psiSolids Control5 x Derrick 600 series shale shakers.

3 Desander & & MachineryMain Power4 x Wartsila 12V32 LNE diesel engines rated at 6,300 hp eachdriving 1 x ABS 4,700 kW AC Power1 x Caterpillar 3508B diesel engine rated at 670 hp driving 1 xCaterpillar SR4 rated 500 kW, Distribution10 x Hammond transformer system rated at 2,500 KVA,switchboards with AC generator CapacitiesFuel Oil 27,021 bblLiquid Mud 4,139 bbl Active / 5,712 bbl ReserveBase Oil 3,019 bblBrine 3,019 bblDrill Water 19,775 bblPotable Water 4,252 bblBulk Material (mud + cement) 21,800 Storage 10,000 sacksBOP & Subsea EquipmentBOP Rams1 x Cameron type TL double 18-3/4 inch 15,000 psi 5-rampreventer.

4 (2 x double rams and 1 x Single ram)BOP Annulars2 x Cameron DL 18-3/4 inch10,000 psi annular HandlingHydralift Bridge crane rated at 440 tons;Marine RiserVetco HMF Class G 21 inch OD x 90 ft in x Hydralift N-line tensioners rated at 813 kips FS 2160 diverter, 500psi,witha ft. length x 21 ft. Keeping / Propulsion SystemMooring System12 point mooring system with 8 x Bodewes Model 25/1209drum winches. 8 x 3-3/4 inch mooring lines consisting of 15,000ft. wire line and 8 x 3-9/16 inch stud link chain at a length of 500ft.; with 8 x Vryhof Stevpris MK-5 and 18 mt.

5 #1and#22 x Leibherr 3600-92D cranes with 150 ft booms rated at 100 stat a radius of 22 #31 x Outreach PLC Knuckleboom crane with a 68 ft. boom andrated at 20 st at a radius of InformationHelideckRated for Sikorsky S-92 helicoptersRevision Date: 15 January 2016 For additional information please contact:TransoceanMarketing Department4 Greenway PlazaHouston, TX 77046, USAP hone: + 1-713-232-7500 Fax: + specifications are intended for general reference purposes only, as actual equipment and specifications may varybased upon subsequent changes, the contract situation and customer needs.

6 All equipment shall be operated andmaintained at all times, in compliance with Transocean standard operating manuals, policies and procedures, and within itsstated operational limits or continuous rated capacity, in order to assure maximum operational Notice: This rig, its systems, components, and/or equipment in useon this rig, may be protected by one or more USand/or foreign FOCUSEDDATA DRIVENPERFORMANCE ORIENTEDBOUNDLESSDEEPWATER NAUTILUSULTRA- Deepwater SEMI-SUBMERSIBLER evision Date: 15 January 2016