Drive and extract a 6.5 meter diameter monopile
DRIVE AND EXTRACT A 6.5 METER DIAMETER MONOPILE
In 2019, a CAPE VLT-320 Tandem was used to drive and extract a 6.5 meter diameter monopile of 60 meter length and weighing 330 ton on the Hollandse Kust Zuid Offshore Wind Farm off the Dutch coast.
As part of a new motion compensated gripper frame test with Dynamic Positioning installation the CAPE VLT was used as the pile had to be removed after installation and offered the opportunity to perform the test multiple times.
Application details
Application
Monopile installation and extraction
Pile type
Monopiles
Water depth
20m
Penetration
16m
Extraction
16m
PILE DETAILS
Pile type
Monopiles
Pile length
56,6m
Pile weight
586t
Pile wall thickness
60-75mm
Pile diameter
6,5m
No. of piles
1
PROJECT DETAILS
Period
October 2019
Sea
North Sea
Country
Netherlands
Location
Hollandse Kust Zuid
Market
Offshore Renewables
System/end usage
Installation and decommissioing test
Operator or end customer
Seaway 7
Installation contractor
Seaway 7
Type of vessel
Floating Heavy Lift Vessel
Name of vessel and owner
Seaway Strashnov, Seaway 7
Mode
Dynamic Positioning
Main Reasons for solution choice
SELECTED EQUIPMENT
CAPE VLT-320
Equipment configuration
CAPE VLT-320 Tandem
Eccentric moment
640kgm
Max. line pull
1,000t
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