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September 2010

™Skandi AkerSubsea well service vessel

Skandi Aker

About Skandi Aker

Built by: STX Europe at Søviknes

Operator: Aker Solutions

Yard no: 705

Delivered: 2010

Design: OSCV 06L

Skandi Aker

Aker Solutions offers complete subsea lifecycle operations to its clients and is present in over 30 countries. Aker Solutions’ subsidiary Aker Oilfield Services is offering fully integrated services ranging from subsea installation, completion to advanced well intervention operations from the company’s fleet of state-of-the-art monohull well intervention units.

Skandi Aker, the first in our series of OSCV 06L sister vessels, is specially designed and equipped for deepwater subsea well intervention operations.

Skandi Aker is classed as a Well Intervention Unit in compliance with the IMO-MODU code. The unit is environmentally friendly with focus on low fuel consumption, low exhaust emissions, and has precautions in accordance with DNV’s “Clean” class requirements requirements incorporated into the vessel design

The unit’s main features are:• Subsea well clean-up and testing• Riser based intervention down to 2500 meters by use of 7 3/8” high pressure riser facilitating - Wireline, slickline and e-line, intervention - Coiled tubing, up to 2 7/8” size, intervention - Pumping services - Well clean-up and well testing• Installation/retrieval of subsea tree systems• Shallow water riserless subsea wireline intervention• Subsea construction and installation ROV operations/survey

Skandi Aker is fitted with a 42 meter tall derrick with an active heave compensated cranes: one of 400 tonnes and one of 100 tonnes (dual fall) capacity. The vessel has a skidding system with pallet capacities of 100 tonnes in the moonpool area and 60 tonnes outside. ROV operations can be performed in sea states up to Hs 6 m. The unit allows building of toolstrings in a non-heaving environment and has a riser bore size equal to subsea completion (up to 7 3/8”).

DesignOSCV 06L

Main particularsLength overall: 156.9 mLength between perpendiculars: 137.7 mBreadth moulded: 27.0 m Depth main deck: 12.0 mDesign draft midship: 6.5 mMax. scantling draft midship: 8.5 mDisplacement: 22 820 m3 @ 8.5 m draftGross tonnage: 16 000 Speed at draft 5.5 m approx.: 18 knots

AccommodationAccommodation for 140 people plus hospital2 single cabins - Captain class2 single cabins - Client class25 single cabins - Officer class29 single cabins - Crew class41 double cabins - Crew class

ClassificationsIMO MODUDNV 1A1 Ship-shaped well intervention unit, E0, DYNPOS-AUTRO (IMO III), CRANE, HELDK-SH, CLEAN DESIGN with NAUT-AW, Comf-V(3) C(3), ICE C, SF, DK(+), HL(2.8) TMON

Dynamic positioningDNV DYNPOS-AUTRO (IMO DP-Class III)

Maneuvering and positioningDynamic positioning system IMO DP-Class III Reference systems: 2 x Seapath, 2 x DGPS, 2 x HPR HiPaP 500, FanbeamThruster control system4 x joystick panels on bridge

Power and propulsion6 x MAN main engines with a total capacity of 19 200 kW6 x Siemens generators1 x MTU engine with Stamford emergency generator2 x tunnel thrusters - 1 900 kW2 x retractable azimuth thrusters - 1 500 kW2 x contra-rotating azimuth thrusters - 3 000 kW1 x main propeller with high lift rudder - 4 000 kW

CapacitiesFuel oil: 2 300 m3

Fresh water: 1 890 m3 (FW production capacity 100 mt/d)Water ballast: 8 900 m3 Deck cargo: above 3 500 mt Cargo deck area: 2 210 m2 Free deck area: 1 850 m2 (excl. derrick and crane)Deck load: 10 mt/m2

Free deck width: 24.5 m Free deck length: 65.0m

Lifesaving equipment4 x 70 POB lifeboats with capacity for 140 persons each side, Harding KISS 800 C1 x MOB Boat, Weedo 700Life rafts 150% coverage each side, DSB

Skandi Aker

Key specificationsSkandi Aker

Offshore and subsea cranes400 mt AHC knuckle boom crane rated 2 700 msw: • Harbour: 400 mt @ 15 m • Subsea (1 000 m): 400 mt @ 13 m • Subsea (2 500 m): 225 mt @ 13 m50-100 mt AHC knuckle boom crane rated 2 700 msw

Deck cranes:Electro-hydraulic knuckle boom crane: 3 mt @ 15 mCargo rail crane: 7 mt @ 16 m (3 mt with gripping yoke)

Anti heeling systemTwo tanks each sideThree reversible propeller pumps, each of 1,500 m3/h

Roll damping systemTwo off passive roll reduction tanks

Module handling systemModule handling main deck: 60 mtModule handling moonpool area: 100 mt

Well intervention systemModule handling tower: 450 mt / 42 m height • Lifting height: 34 m • V-door height: 29 m • Riser stands: 90 ftDrawworks: 100 mt single fall / 450 mt 4 all - AHCRiser tensioner system: 8 cyl. w/65 ft stroke & 725 mt total capacityUpper tensioner system: 4 cyl. w/65 ft stroke & 120 mt total capacityMoonpool: 450 mt / 7.2 m x 7.2 mRiser/pipe handling: Automatic Handling SystemF&G ESD system: ABB Safety SystemChoke & kill manifold: 3 1/16” NB API 10 000 PSIDrill water capacity: 1 000 m3

Base oil/diesel capacity: 400 m3

Brine capacity: 200 m3

Fluid mixing system: 500 m3

Riser system: 690 bar LRP and HP RiserMixing system: 3x100 m3, 2x50 m3, 2x25 m3 = 450 m3

Flareboom and deluge system: Up to 20 000 bbls/day @ 50 psi

Pumps3 x HP Well Serive Pumps: • 3 500 l / m @ 5 000 psi • Max working pressure 7 500 psi • 2 280 HP (1 700 kW) each1 x HP Chemial Injection Pump: • 250 l / m @ 5 000 psi • Max working pressure 7 500 psi • 430 HP (320 kW)

ROV system2 x Perry Slingsby Triton XLS 150 Work Class ROV systemsOne centre launch through moonpool, and one over side launch. Possibility for third system over side.

Moonpool7.2 m x 7.2 m moon-pool

HelideckSikorsky S-92 @ D-value 1.05 (21 m diameter, 8.2 mt)