The Deepwater Navigator is a 1971 drillship upgraded in 1999 and 2011. It is 548 feet long and can operate in up to 7,218 feet of water and drill to 30,000 feet. It has accommodations for 130 people and is flagged in the Marshall Islands. The drillship is equipped with a 185 foot derrick, drawworks rated at 1,325,000 pounds, mud pumps that can generate 5,000 PSI, and a 21 inch marine riser system. It is powered by eight diesel engines that drive generators and has a station keeping system to maintain position.

1. Deepwater Navigator
Revision Date: 29- August-2014
These specifications are intended for general reference purposes only, as actual equipment and specifications may vary based upon subsequent
changes, the contract situation and customer needs. All equipment shall be operated and maintained at all times, in compliance with Transocean
standard operating manuals, policies and procedures, and within its stated operational limits or continuous rated capacity, in order to assure
maximum operational efficiency.
Deepwater Drillship
General Description
Design / Generation.............................................................................Earl & Wright
Constructing Shipyard ........................................................................Mitsui, Japan
Year Entered Service / Significant Upgrades................................ 1971/1999,2011
Classification ................................................................................... DNV 1A1, IMO,
Flag .................................................................................................. Marshall Islands
Dimensions .....................................................548 ft. long x 87 ft. wide x 41 ft. deep
Drafts ...............................................................................................30 ft. at load line
Accommodation.................................................................................... 130 persons
Displacement ............................................................................. 27,487 st operating
Variable Deck ................................................. 27,935 st operating / 27,935 st transit
Transit Speed....................................................................................... up to 8 knots
Maximum Water Depth ................................... 7,218 ft. designed / 7,218 ft. outfitted
Maximum Drilling Depth............................................................................30,000 ft.
Drilling Equipment
Derrick Single National Dreco API 4F, 185 ft. high, with 40 ft. x 40 ft.
base.
Hookload Capacity 1,500,000 lbs. gross nominal capacity.
Drawworks National Oilwell E-3000 HP 3 x GE 752R-DC electric motors;
800 HP with a maximum rated pull of 1,325,000 lbs with 14 x
1-3/4 inch lines strung.
Compensator Rucker-Shaffer DSC 25/800, with a 25 ft. stroke and 800 ton
with capacity locked.
Rotary Table Continental Emsco T 6050-60; 60-1/2 inch opening, hydraulic
with a capacity rating of 882 st.
Top Drive Varco TDS 4S, 650 st capacity, with 1 x GE 752-DC motor,
rated to 45,000 ft.-lbs continuous drilling torque in low gear.
Tubular Handling Horizontal pipe racking system Pipe Master, rated for 220
stands of 5 inch drill pipe.
Riser Feed 1 x RHS 250-80 rated for 25 st from SMST for 21 inch OD x
80 ft. riser joints.
Mud Pumps 3 x Emsco FB-1600 1,600 HP triplex pumps, each driven by 2 x
GE 752 traction motors.
HP Mud System Rated for 5,000 psi
Solids Control 4 x Axiom AX-1 Elliptical Motion, direct drive shale shakers.
Power & Machinery
Main Power 8 x EMD E16-645-E9 MD diesel engines rated at 2,237 kW,
at 900 rpm, each driving 3,250 kVA EMD AB-21-24
generators.
Emergency Power 1 x GM Detroit Allison 10V-92TA diesel engine rated at 706
kW, at 1,800 rpm and driving a New Age HCM 634G
generators.
Power Distribution 8 x Westinghouse ASL AC distribution.
Storage Capacities
Fuel Oil .................................................................................................. 15,869 bbls.
Liquid Mud ................................................. 1,288 bbls. Active / 1,223 bbls. Reserve
Base Oil ................................................................................................... 2,346 bbls.
Brine ........................................................................................................ 1,761 bbls.
Drill Water.............................................................................................. 18,990 bbls.
Potable Water.......................................................................................... 3,032 bbls.
Bulk Material ............................................................... (mud + cement) 17,880 cu.ft.
Sack Storage..........................................................................................3,000 sacks
BOP & Subsea Equipment
BOP Rams Cameron 18-3/4 inch 15,000 psi pressure capability; 5 x ram
preventer. (2 x ST doubles and 1 x ST single)
BOP Annulars 1 x Cameron AX 18-3/4 inch 10,000 psi pressure capability
annular preventer.
BOP Handling National Oilwell / Dreco Drilling Structures BOP Crane rated
at 385 st capacity.
Marine Riser ABB-Vetco Gray MR-6E 21 inch OD API 5 grade X80, 80 ft.
long per joint with a riser buoyancy of 49 inch OD.
Tensioners 12 x Shaffer riser tensioners rated at 80 st each and with a
maximum stroke of 12.5 ft. using a 2.25 inch wireline.
Diverter Hydril FS-21 21 inch OD rated at 500 psi with 1 x 12 inch flow
line.
Tree Handling 1 x Dreco Drilling 385 st system.
Moonpool 30 ft. length x 29 ft. width
Station Keeping / Propulsion System
Thrusters 4 x (2 x forward and 2 x aft) Holland Roer Propeller,
retractable; azimuthing 1,490 kW rated and 5 x fixed
Pleuger/Baylor pod thrusters;
DP System L3 NMS 6000 DPS class II dual redundant system; Acoustic
beacon system x 2, DGPS x 2, single angle spot beam,
Inmarsat, XP and HP corrections.
Cranes
Cranes 2 x 80 st Amclyde Model 35000 120 ft. x 80 kips at 30 ft. and
1 x Bucyrus Eyrie MK60 80 ft. boom length and rated to 42
kips at 15 ft.
Other Information
Helideck Rated for Sikorsky S-92N helicopters.
Other N/A
For additional information
please contact:
Transocean
Marketing Department
4 Greenway Plaza
Houston, TX 77046, USA
Phone: +1-713-232-7500
Fax: +1-713-232-7880
Marketing@deepwater.com
www.deepwater.com

2. Deepwater Navigator
Revision Date: 29- August-2014
These specifications are intended for general reference purposes only, as actual equipment and specifications may vary based upon subsequent
changes, the contract situation and customer needs. All equipment shall be operated and maintained at all times, in compliance with Transocean
standard operating manuals, policies and procedures, and within its stated operational limits or continuous rated capacity, in order to assure
maximum operational efficiency.