The Seven Arctic will be a highly capable construction vessel suitable for worldwide operations. This new Heavy Construction Flex-lay vessel features a 1,000t offshore crane and a 600t top tension (tiltable) lay system with 7,000t of underdeck storage.

• Length 162.3m x breadth 32.0m• 1,000t AHC offshore crane• 600t top tension (tiltable) lay system• 7,000t underdeck basket for storage of flexible pipe/umbilicals• Accommodation for 132 persons• Deck Area c. 2,600m²• DP Class III with two engine rooms• Deck load of 5,400t at 5m above main deck• Special Purpose Ship code compliant• Transit speed 15 knots• Adapted for both tropical and winter environments • Twin work-class ROVs• Operating depth down to 3,000m

seabed-to-surface

Seven ArcticHeavy Construction/ Flex-lay

Main Crane

The main crane is an active heave- compensated subsea construction crane and has been specifically selected and developed to give outstanding flexibility and capability for a range of different operational requirements. To ensure maximum efficiency, the crane can work in a number of different modes:- 1,000t triple-fall mode; 660t dual-fall deep sea mode; 660t dual-fall standard mode; 660t dual-fall high lift mode; 330t single-fall mode.

Dual-Fall Deep Sea Mode

For deep sea mode, the rope-luffing knuckle-boom design, together with the rope capture system, allows the two wire rope falls to be widely separated at the surface, while the wide twin sheave block provides separation and anti-twisting movement at depth. This combination of features helps to eliminate the risk of cabling while maintaining a manageable wire size for more standard operations.

Dynamic Positioning

The thruster configuration, in conjunction with the main propulsion shafts and CP propellers, affords the vessel a position-keeping capability able to withstand harsh operating conditions. The vessel has DP Class III notation and can also work in DP Class II configurations allowing different environmental limits depending on the requirements of the operation being undertaken.

seabed-to-surfaceSeven Arctic Heavy Construction/Flex-lay vessel

600t top tension (tiltable) lay system and 7,000t Underdeck Basket Carousel

The vessel is fitted with a Tiltable Lay System, suitable for laying flexible flowlines and risers, umbilicals and power cables via the twin tensioner and double A&R system. The four-track twin tensioners are retractable to facilitate passing large pipe-end fittings and other structures. The Lay System also has the capability to retrieve rigid products from the seabed to the Hang-Off system and install PLETs and other structures. Product can be loaded into the 7,000t capacity underdeck basket through one of two loading hatches. The aft deck of the vessel is suitably strengthened to accommodate an optional 3,000t capacity deck carousel or a multi-reel drive system.

Aligner MBR = 6m

Retractable Twin Tensioners 275t (Upper) & 325t (Lower)

A&R = 600t & 200t

Moonpool 8.75m x 7.2m

Carousel and VLS; Longitudinal view

Wind (knots)

DUAL FALL - DEEP SEA MODE

Basket: Radius = 26.2m Capacity = 7,000t Volume = 3,100m³

Surface current = 2.0 knots

Wind Speed (knots)

Sig. Wave Height (m)

10 1.8

20 3.3

30 5.2

40 7.5

50 10.1

LOAD CURVES

General InformationType Heavy Construction/Flex-layClassification Lloyds Register, X100A1, Offshore

Supply Ship, Helicopter Landing Area, WDL(+), ShipRight (ACS(B)), *IWS, ECO(IHM, OW, P), ice-class 1D, Winterisation H(-30)SC, XLMC, CAC 3, UMS, DP(AAA), Descriptive note ShipRight (BWMP(method)), 2008

Built Hyundai Heavy Industries, 2016 Flag Isle of ManYear Built Delivery due 2016

Principal DimensionsLength Overall 162.3mBreadth 32.0mDepth Main Deck 13.5mOperating Draught 8.5mTransit Speed 15 knots

Dynamic Positioning SystemsDP Classification DP Class III DP HIL CertificationReference System 2x taut wires, 3x Veripos DGNSS,

2x HiPAP 500, 1x CY Scan

Power and PropulsionEngine Rooms 2Main Engines 6 x HiMSEN 9H32/40Power 4,500kW

Generators 6 x HHI HSJ7 915-10PPower 4,220kW

Propulsion 2 x Controllable pitch propeller shafts

Power 9,200kW

Thrusters 4 x Tunnel Thruster (2 Fwd, 2 Aft)Power 2,600kW

Azimuths 2 x Retractable Azimuth Thruster (Fwd)

Power 2,300kW

Main DeckClear Deck Area 2,600m²Deck Strength 15t/m² aft of main crane

10t/m² elsewhere

Accommodation Berths 132Cabins 52 x single cabins 40 x double cabins

Ice and Winterisation Features include hull plate strengtheningTrace heating of helideck, lifeboat, and other critical areasTank heating of fresh water tanks, and other measures

Seven Arctic

Tank Capacities (100%) Fuel Oil 3,700m³Fresh Water 1,300m³Ballast Water 7,500m³Anti-Heel Tanks 3,000m³Anti-Roll Tanks 800m³

HelideckType NORSOK Compliant Suitable for

Sikorsky S-92 / AugustaWestland AW101, c/w Helicopter Monitoring System

Cranes Main Crane Capacity 1,000t @ 18m radius

660t @ 26m radius 330t @ 48m radius

Manufacturer HuismanOperating Water Depth 3,000mMain Lift Wire 6,350m / 109mm AHC YesLocation Main deck, port sideAuxiliary Hoist 40t at 61m, certified for

man-ridingAuxiliary Cranes 1x 100t AHC at 17m radius

1x 25t AHC at 18m radiusOperating Water Depth 3,000m (Single Fall) Location Main deck, starboard side

Moonpool Number 1Dimensions: 8.75m x 7.2m

Tiltable Lay System Tensioners 2Dynamic Top Tension 600tPrimary A&R Capacity 600tPrimary A&R Wire Length 3,500mSecondary A&R Capacity 200tSecondary A&R Wire Length 3,000mHang Off Clamp 600tPLET Handling System 50tLay System Working Angles 0deg to 10degLay System Bridge Passage Angle 39deg

ROV SystemROVs 2x work-class ROVOperating Depth 3,000mInstalled in ROV hangar, port and starboard side at aft end of superstructure, deployed over the side on rail-guided cursors. ROV control room, workshops and stores fully integrated into the vessel.

Underdeck BasketCapacity 7,000tVolume c.3,100m³Outer Wall Diameter (inner) 26.2m

EnvironmentalHull form and propulsion arrangement optimised to reduce fuel consumption

Waste heat recovery system fitted

SCR equipment installed in exhaust to reduce NOx emissions

Ballast water treatment system installed to protect biodiversity

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2015

Disclaimer: ‘The information in this data sheet has been prepared in good faith and is believed to be correct at time of going to press. No representation, warranty, assurance or undertaking (express or implied) is or will be made, and no responsibility or liability is or will be accepted by Subsea 7 in relation to the adequacy, accuracy, completeness or reasonableness of this data sheet. All and any such responsibility and liability is expressly disclaimed.’