56 jacket piles for Ishikari OWF Japan

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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