1.2 Class, Rules, Regulations and Conventions

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1 435 Series Liftboat Technical Specifications This unit designed to be a workover and well service under the condition of 90m sea water depth. The deck area of the unit to be about 2300 m2 which carry a 250t crane for offshore service, and the unit also can be also applied as a living support vessel. 1.2 Class, Rules, Regulations and Conventions The unit built under the surveys and according to the rules and regulations of the class of ABS with the symbols: A1, Self-Elevating Unit, AMS-NP,DPS-2, HELIDK, CRC, CPS The construction of the unit shall satisfy the following existing applicable rules, regulations and conventions: -The applicable rules and regulations issued by ABS -Guide for Building and Classing Mobile Offshore Units (2009) -Rules for Building and Classing Mobile Offshore Drilling Units (2012) -Steel Vessel Rules The applicable international rules and regulations: -SOLAS (Consolidated edition 2004) and amendment -IMO Code for the Construction and Equipment of Mobile Offshore Drilling Units (bound edition 2009) -IMO International Load Lines Convention and Protocol for International Load line Convention (1988) -IMO Convention on the International Regulations for Preventing Collisions at sea 1972 and Amendment -IMO International Convention for the Prevention of Pollution from Ship (MARPOL 73/78) Consolidated Edition 2006) and Annex -International Convention on Control of Harmful Anti-fouling System on Ships -International Convention on Tonnage Measurement of Ships1969

2 2. GENERAL DESCRIPTION AND SPECIFICATION 2.1 General Description Hull Particulars: Length overall 97.1 m Breath molded 55.0 m Depth molded 7.2 m Design draught 4.0 m Design speed 6.0 kn Max.Jacking load t Variable load 2500 t Service depth 5.90m Air gap 18.3m Deck stress 10 t/m2 Main deck area ~2300 m2 Leg, Spud can and jacking system particulars: Leg configuration Leg length (including spud can) Jacking system Jacking speed (under load) Accommodation Helicopter trigonal truss with spline 132.5m (435ft) electric rack and pinion 0.6 m/min 300P Sikorsky S-61N (12.8T) 2.2 Performance Criteria and Design Conditions The following table presents the upper range of environmental conditions to be used for the structural strength evaluations: Environmental criteria Value Max. Water Depth [m] 90 Max. Wave Height [m] 17.1 Associated Wave Period [s] 12.6 Wind [1-minute averaged] [m/s] 25.7 Air gap [m] 20.0 Penetration [m] 3 Minimum Design Temperature 0 C

3 2.2.2 Tank Capacities The specific sizes are to be defined by the plan drawing. Tank Ballast Fresh water Fuel oil Capacity (m3) ~2850 ~2000 ~1140 Tank Capacity (m3) 3. LEG, SPUDCAN AND JACKING SYSTEM The leg to be trigonal truss type. The leg length, including spud can, to be 132.5m (435ft). The spud can to be circular, withf13m. Each leg to be connected with the hull by means of jacking gear units. The unit to contain the electric motor and jacking pinion. The jacking units are able to jack / lower the leg or main hull according to the operation requirements. The jacking system to consist of electric control and electric-driven function, and each leg is equipped with eighteen (18) sets of jacking electric motor, planetary gear box, jack pinion, brake, inclinometer etc. Main parameters: Normal jacking capacity: Preload holding capacity: Max. Jacking speed (under load): Power source: Electric Motor Rated Power: 2700 t per leg 4000 t per leg 0.6 m/min(1.5ft/min) 600V, 50Hz, 3 phases 4. MAIN EQUIPMENT 4.1 Main generator: The unit to be equipped with five (5) main generators Rated power: 1600kW/set Output voltage: 600V Rated Frequency: 50HZ Rated speed: 1500rpm

4 4.2 Emergency generator The unit to be equipped with one (1) emergency generator Rated power: 450kW Output voltage: 400V Rated Frequency: 50HZ Rated speed: 1500rpm 4.3 Main Crane Model: Hoising height: 75m Hoising speed: 4m/min Slewing speed: 0.3rpm Slewing range: 360 Luffing time: 180s 4.4 Auxiliary Crane Model: Hoising height: 50m Hoising speed: 15m/min Slewing speed: 0.5rpm Slewing range: 360 Luffing time: 80s 4.5 Propulsion System Bow Azimuthing Thruster: Quantity: two (2) sets Driven type: electro motor Input power: 900 kw Input speed: 0~1500rpm Propeller diameter: 1800mm Aft AzimuthingThruster Quantity: three (3) sets Driven type: electro motor Input power: 1200kW Input speed: 0~1500rpm Propeller diameter: 1900mm

5 4.6 Submersible pump The unit to be equipped with three (3) submersible pumps and pump towers. The rack rail to be arranged on the legs truss. The pump parameters are as below: Flow capacity: Water head: Power: 400m3/h 0.67Mpa 120kW