ahts - dof group · ahts construction anchor handling vessel ... chain locker 31,190 m speed ......

AHTSConstruction Anchor Handling Vessel

Skandi Skansen

All specifications are subject to changes without priorNotice. Please contact us for details and verifications.Construction Anchor Handling VesselSkandi Skansen

The Skandi Skansen is a new generation high powered anchor handling vessel designed for field installation operations across a wide range of water depths and environmental conditions.

The Skandi Skansen also features STX’s new bow design, optimised for Eco-drive in all weather conditions.

General DescriptionName Skandi SkansenType AHTS Construction and Field Support vesselOwner DOF Installer ASAClass DNV 1A1, SF, SUPPLY VESSEL, TUG, E0, DYNPOS-AUTR, (IMO DP II), Comf-V(3), CLEAN DESIGN, NAUT OSV, Helidk-SH, T-MON, DK(+), HL(2,8) Built 2011

CapabilitiesThe Skandi Skansen is a versatile multipurpose Construction Anchor Handling vessel, ideally suited to deepwater moor-ing and filed installation operations. Built to meet future environmental standards, the vessel is fuel efficient and clean class, thus having the capability to work in most of the world’s offshore oil and gas precincts. At 109m long, operat-ing capabilities include a working moonpool, a 250t offshore crane, “Safe Deck” manipulator crane system, an optional 350 T A-frame, a main winch capacity of 500 T and secondary of 170 T and a bollard pull of above 350 T. The Skandi Skansen has an in-built Schilling UHD work class ROV and a working deck area of 1,070 m2

Introduction


GeneratorsMain 4 x Wartsila 8L26 2,600kW eachHarbour / Emergency 1 x Nogva 220 kWDiesel Propulsion ServiceBow2 x Lips 1,500 kW1 x Retract 1,500 kWStern2 x Wartsila Lips Tunnel 1,500 kW each

EnduranceFuel ConsumptionIn port 3 / 24 hrsTransit 3 m3 / 24 hrsDP 23 m3 / 24 hrsFW making capacity 8m3 / 24 hrs

CapacitiesMarine diesel oil 1,800 m3

Fresh water 1,000 m3

Ballast water 4,000 m3

Accommodation90 persons in 55 single / double cabins

ROV (Integrated)1 x Schilling UHD Work Class

Optional Equipment(Installed on Mezzanine Deck)Secondary Work Class ROVObservation Class ROV

2 x BRATTVAAG secondary winches 170 T pull @ 0 - 23 m / minAdditional2 x Hydraulic tugger (fwd) 24 T pull2 x Hydraulic tugger (aft) 17 T pull

Deck SpaceMain deck area 1,070 m2 @ 10 T / m2

Deck material TimberMoonpool 7 m x 7 mChain locker 1,190 m3

SpeedMaximum 17.5 knotsEconomic transit 12 knots

Helideck21 m D-Rating (Sikorsky S92)

Dynamic Positioning SystemKongsberg K-POS DP21 (DP2)Reference Systems1 x HIPAP 5002 x DGPS1 x FanbeamAdditional Interface for:Gyro, MRU, Wind, DGPS, Fanbeam, Radius, Winch Tension,ECDIS, Survey Computer

Power and PropulsionMain engines2 x Wartsila 16V32 7,680 kW eachBollard pull Above 350 t

Main DimensionsOverall length 109.6mLength between pp 98mBreadth 24mDepth 9.8mDraft 7.8m

CranesManufacturer National Oilwell Varco (NOV)Type AHC Knuckleboom craneMain hoist 250 T @ 13 mAuxiliary hoist 20 T @ 40 mMain and auxiliary hoist wire lengths 2,500 mAH-50, 10T2 x provision crane 3.0 T / 16 m2 x AH-cargo rail cranes 5 T / 2.6 - 10 mwith manipulators (safe deck) 3 T / 2.6 - 14.3 mA frame (optional) 350 T SWL

WinchesMain1 x BRATTVAGG Water Fall triple drum (SL500W-3)Towing / working drums - 500 T1 x Declutchable towing drum 1,500 mm Ø x 3,750 mm Ø x 4,100 mm length1 x Declutchable working drum 1,500 mm Ø x 3,750 mm Ø x 4,100 mm lengthWire capacity 6,700 m of Ø 76 mm eachAnchor handling drum - 500 T1 x Declutchable ah/wire drum 3,500 mm Ø x 5,400 mm Ø x 8,200 mm lengthWith dividing flange socket part: 18,700 m of Ø 76 mm wire

Technical Specification


General Arrangement

F92J

F92J

P

CO2

P

EDCLO SON PE

EDCLO SON PE

P-A

S-A

P-F

S-F

With 1,070 m2 main deck space, large work moonpool and sophisticated equipment for safe and efficient field development, including “Safe Deck” manipulator crane system, the Skandi Skansen is ideally suited to conduct deepwater construction installations.


Dynamic Positioning System

DP Capability plot@100% Capability all thrusters on line

wind direction,coming-from [deg]

wind speed: AutomaticSignificant wave height: DNV (ERN)Mean zero up-crossing period: DNV (ERN)

Rotating tidal current: 1.46 knotsRotating wind induced curretn: 0.000* Uwi knots

Limiting 1 minute mean wind speed in knots at 10m above sea level

330

300

240

20 40 60 80 100 [knots]

210 150

120

60

30

PORT STBD

BOW

STERN

The vessel is fitted with a fully redun-dant Kongsberg K-Pos DP21 Dynamic Positioning System.

There is one HiPAP 500, two satel-lite positioning systems (DGPS) and a Fanbeam.


Cranage Capacities

The pedestal mounted active heave compensated knuckle boom crane is located on the starboard side of the main deck. It has a 250 T capacity at a radius of 13 m. The optional stern mounted A frame has a 350 T capacity.

There are two auxiliary cranes, both with a capacity of 3 T and 16 m, and two Rolls Royce Marine Safe Deck AH-handling cranes are mounted on cargo rails.


Work Class ROV

Schilling UHDThe Schilling UHD is a state of the art heavy duty work class ROV system, able to cope with the most demand-ing offshore applications. A wide range of modern tooling and sensors can be accommodated and it has been designed to allow prolonged and ac-curate operation.

General DescriptionDepth rating 4,000 MSW (3,000 MSW Installed)Power 200 HPPayload Capacity 400 kgThrough Frame Lift 3,500 kgControl Modes Heading, Depth, Altitude & Auto PositionTMS Top Hat Design

CapabilitiesThe ROV has a power unit rated at 200 HP with 4 horizontal and 3 vertical thrusters. The Thruster Control Manifold is equipped with 4 spare proportional valves and 2 spare So-lenoid valves, and the tooling manifold is fitted with 5 spare proportional valves and 1 spare Solenoid valve. The ROV is fitted with Schilling T4 seven-function and and Schilling Rigmaster five-function manipulators, 16 station proportional main manifold and 12 station proportional tooling manifold as standard. The survey junction box allows for the easy integration of all modern sensors and additional cameras.


Schilling UHD Work Class ROV

Doppler (Auto Position Sensor)Manufacturer RDIModel Monitor Workhorse 1,200 kHzRange 30 m

CameraManufacturer Kongsberg MaritimeModel OE 15-100 Near SIT OE 14-366 Colour Zoom OE 1358 (Monochrome) & 14-110 (Mini)

LightManufacturer DeepSea Power & LightModel Sea Arc HID, Deep Multi Sealite

Launch and Recovery systemThe ROV has a SEPRO Active-heave compensated Launch and Recovery System, with 3,000 m capacity electric Cetix winch.

TMSTop-hat design, Schilling Robotics XE TMSDepth rating 4,000 m (3,000 m installed)Height 2.13 mDiameter 2.00 mWeight in air 4,500 kgTether capacity 822 mElectrical horsepower 75 HP

Standard SensorsDepthType ParoscientificModel Digiquartz 8B 4000Operating range 4,000 mAccuracy 0.01% FSHeadingManufacturer Precision NavigationModel TCM2-50Accuracy 1

o

Pitch and rollManufacturer CrossbowModel DMU-FOG-VGAccuracy 0.5

o

AltimeterManufacturer Kongsberg MesotechModel 1007Frequency 200 KHzRange 30 mSonarManufacturer Kongsberg MesotechModel MS1000 / 1071

Main DimensionsLength 3.0 mWidth 1.85 mHeight 1.83 m (2.23 m w/skid)Depth rating 4,000 m (3,000 m installed)Weight in air 4.2 T approx.Payload capacity 400 kgUnder-slung 3,500 kg

Propulsion / SpeedPower pack (Shaft / HP) 200shpThruster horizontal 4 x 16”Thruster vertical 3 x 16”Forward speed 3+ knotsLateral speed 3+ knotsHeading control +/- 2.0

o

Pitch and roll control +/- 5.0o

Depth control +/- 0.15 mAltitude control +/- 0.15 m

Bollard Pull (Nominal)Forward 1,000 kgfLateral 1,000 kgfVertical 900 kgf

IHPUCompensator volume (dirty pack) 20 L

ManipulatorsSchilling Titan 4 seven-functionSchilling Rigmaster five-function

If you would like further information or would like to contact us about our services or equipment, please

visit our website:

or

Call one of our regional offices:


Brazil +55 22 2105 5700

Singapore +65 6561 2780

Norway +47 5525 2200

UK +44 1224 285 999

Australia +61 89278 8700

www.dofsubsea.com

Contacts

ahts - dof group · ahts construction anchor handling vessel ... chain locker 31,190 m speed ......

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