56 jacket piles for Ishikari OWF

DATE: December 5, 2022

56 JACKET PILES FOR ISHIKARI OWF JAPAN

From May – August 2022, the CAPE VLT-320 was used for the installation of 56 jacket piles with lengths of 60 meter and a diameter of 2.5 meter for the Ishikari Offshore Wind Farm in Japan.

The piles were driven through a seabed template until trunions were just above the pile gripper. Pile verticality was critical with constant monitoring whilst driving via the CAPE Holland in-built Inclonometer system.

The ability to extract and re-drive any piles that were out of tolerance was crucial and this key feature of the CAPE VLT-320 was utilized when necessary.

Application details

Application

Jacket pile installation

Pile type

Jacket piles

Water depth

22m

Fastest net driving time

10min

PILE DETAILS

Pile type

Jacket piles

Pile length

60m

Pile weight

160t

Pile diameter

2.5m

No. of piles

56

PROJECT DETAILS

Period

May – August 2022

Sea

Ishikari Bay

Country

Japan

Location

Ishikari Bay

Market

Offshore Renewables

System/end usage

Offshore Wind Turbine

Operator

Green Power Ishikari

Installation contractor

Nippon Steel Engineering

Type of vessel

Heavy Lift Vessel

Name of vessel and owner

Dai-Ichi Yutakago, Moricho

Mode

Anchors

Main Reasons for solution choice

ELIMINATE PILE RUN/DROP FALL

CONTROLLED INSTALLATION

LOW NOISE EMISSION

SELECTED EQUIPMENT

CAPE VLT-320

Equipment configuration

CAPE VLT-320

Eccentric moment

320kgm

Max. line pull

500t

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