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Offshore wind farm, Walney

Windfarm construction projects regularly feature in the work programmes of SMIT’s sheerlegs fleet. For example, the Taklift 7 was involved in the Walney Offshore Windfarm development in the Irish Sea. Walney Offshore is a wind farm project developed by DONG in the Irish Sea, some 20 miles from the coast at Barrow.

The first half of the development, Walney 1, became fully operational in 2011. SMIT’s scope of work involved the installation of a series of 51 large monopiles for Walney 1. The 1,200 tonnes lift capacity sheerlegs Taklift 7 was mobilized for the project, together with the multipurpose vessel Smit Buffalo, which provided support services. The main task was to upend the monopiles and hand over the structures to a jack-up installation platform. The monopiles were transported to Barrow by a coastal vessel, having been loaded in Poland. A shore crane discharged the monopiles as they arrived, they were then plugged and towed out to the windfarm installation site. Taklift 7 would then connect and bring each pile into the vertical position, ready for installation by the jack-up Goliath. Each pile had a length of 58 metres and a weight of around 600 tonnes during upending. This project involved around five months of work and was successfully completed in September 2010.

Related projects

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Ineos IRM 2018

Boskalis Subsea Services was contracted by INEOS E&P A/S for the 2018 Inspection, Repair and Maintenance (IRM) campaign, involving the preparation and execution of 20-off scopes on various assets.

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Haven Jack-up upgrade

The Master Marine accommodation unit HAVEN required an upgrade for operations at the Johan Sverdrup Field.

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DNO Oman block 8 LTD

DNO Oman Block 8 Ltd (DNO) is the operator of the Bukha Field, offshore Khasab, Oman. DNO entered Oman in 2012 and operates the country's only producing offshore fields on behalf of Omani Oil & Gas ministry. Boskalis Subsea Services (BSS) in recent years have assisted DNO with lifting a flare boom onto the WB Platform, making use of a DP2 offshore vessel, also Boskalis provided diving and inspection services to DNO for their SPM Offshore RAK, UAE.

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Transport and installation Aasta Hansteen
spar platform

For the Statoil Aasta Hansteen project, Dockwise has transported the newbuild spar hull from the HHI fabrication yard in Ulsan, South Korea to the offshore discharge location near Høylandsbygd, Norway. The spar is the world’s largest spar ever built to date. 

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Transport and installation turbine foundations offshore wind farm, Wikinger

The Wikinger offshore wind farm has been developed by Iberdrola in the Baltic Sea area, within the German Exclusive Economic Zone (EEZ). The offshore site is about 34 km northeast of the island of Rügen, and covers an area of roughly 50 km², within which 70 wind turbine generators (WTG) of 5 MW and one offshore substation (OSS) are being installed. The water depths for installation range between 36 and 42 meters. When completed the windfarm will deliver 350 MW electrical power to the German national grid. The transport and installation of the 70 WTG foundations and the piles for the OSS has been carried out by Boskalis.

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Offshore wind farm
monopile installation,
Veja Mate

Boskalis is close to completing one of its latest and most significant offshore wind projects - Veja Mate, in the German North Sea. The project involves handling and installing the biggest monopiles in the industry – weighing between 1,230-1,302-tonne a piece – using the biggest pile gripper frame and pile driving hammers in the industry with a brand new vessel, which also happens to be the biggest in the sector. Once complete, the offshore wind farm will produce over 1,6 TWh of green, renewable electricity annually.