29 Flanged monopiles for Moray West OWF

DATE: September 17, 2024

29 FLANGED MONOPILES FOR MORAY WEST OFFSHORE WIND FARM

Between February 2024 and April 2024, the CAPE VLT-640 Quad was used by installation contractor DEME on board of its Offshore Heavy Lift DP3 installation vessel Orion to install 29 flanged monopiles with a bottom diameter up to 10 meters and a length of up to 91 meters for the Ocean Winds’ Moray West offshore wind farm in Scottish waters.

The CAPE VLT was chosen as a mitigation measure to prevent pile run. Additional features, such as certified pile handling and upending capabilities, helped make the installation process much more controlled, particularly in combination with the Dynamic Positioning system of the vessel and the state of the art installation tools from DEME. All 29 piles were installed within a total of just 60 days.

CAPE Holland is looking back on a great performance of the world largest CAPE VLT to date with no mechanical breakdown of the equipment which was all newly built, including the newly developed power units (PU-2600) which were also stacked to reduce required deck space.


Application details

Application

Monopile installation

Pile

Monopiles

Water depth

36-50m

PILE DETAILS

Pile type

Flanged

Pile model

Tapered

Pile length

Up to 91m

Pile weight

Up to 1,935t

Pile wall thickness

86-115mm

Pile diameter top

7.5m

Pile diameter bottom

Up to 10m

No. of piles

29 of 62 in total

PROJECT DETAILS

Period

Feb’24 – Apr’24

Sea

North Sea

Country

Scotland

Location

Moray Firth

Market

Offshore Renewables

System/end usage

Offshore Wind Turbine

Operator or end customer

Ocean Winds

Installation contractor

DEME

Type of vessel

Heavy Lift Floating mono hull DP3 Installation Vessel

Name of vessel and owner

Orion, DEME

Mode

Dynamic Positioning

Main Reasons for solution choice

UPENDING, LIFTING, DRIVING IN SINGLE OPERATION

VERTICALITY MONITORING DURING DRIVING

SELECTED EQUIPMENT

CAPE VLT-640

Equipment configuration

CAPE VLT-640 Quad

Eccentric moment

2,560kgm

Max. line pull

3,400t

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