To main content

Borssele ALPHA/BETA

Royal Boskalis Westminster is a leading global marine contractor and services provider. With safety as our core value, we offer a wide variety of specialist activities to the oil & gas and renewa-bles sectors. These activities include marine instal-lation and decommissioning, seabed intervention, marine transport and services, subsea services and marine survey. In addition, Boskalis is a global dredging contractor, provides towage and terminal services across the globe and delivers marine salvage solutions. By understanding what drives our clients we are able to provide the solutions that enable them to meet their specific business goals. For this reason we are constantly looking for new ways to broaden and optimize our offering and are committed to expanding our proposition, supported by our financial strength. With our committed professionals in engineering, project management and operations, 800 special-ized vessels and an unprecedented breadth of activities in 90 countries across six continents we help our clients in the offshore industry push boundaries and create new horizons.

LONG-TERM DRIVERS APPLICABLE TO THE PROJECT

Generating renewable energy. Increasing energy consumption.

PROJECT CONTEXT

In the Agreement for Sustainable Growth from the Dutch government, it has been agreed that in 2023, 16 percent of the Dutch energy-supply needs to come from sustainable sources. To achieve this goal, the Netherlands need to generate more wind-energy, both on land and sea.

INTRODUCTION

The grid connection of the Borssele offshore wind area in the North Sea consists of two 700 MW connections, called Alpha (for Borssele I and II) and Beta (for Borssele III and IV). Boskalis Subsea Cables, in consortium with NKT, was awarded the contract for the supply and installation of 4 export cables and 1 intercon-nector cable. In order to execute the project in a safe and efficient manner, Boskalis has taken full advantage of the expertise and capabilities within the group. To allow the cables to be installed, shallow parts of the route are dredged and sand-waves are pre-sweeped.

BSS-III

For the project, cable burial up to 10 meters depth was required. To achieve this, a trench of 2 meters was dredged. Then the Boskalis inhouse designed burial sledge BSS-3 lowered the cable another 8.5 meter. The BSS-III is capable to bury the cables up to 8.5 m in sand and 6.5 m in hard clay. A world record for cable burial. Using the tool, Boskalis managed to limit the amount of dredging in the NATURA2000 area Westerschelde and therefore minimizing the impact on the unique environment of this nature protection area.

Related projects

Selected filters
Taklift_4.jpg

Jotun A

The Jotun A FPSO, a 92,000 DWT FPSO capable of producing 70,000 bpd, began producing in 1999 on the Jotun field (Norway). As part of Vår Energi’s investment in increased oil recovery from the Balder field in the North Sea an upgrade of the Jotun FPSO is required. The Balder Future project will extend the life of the field (PL 001) by 2045, giving Norway’s oldest license a lifetime of 80 years.

Bokalift_1.jpg

L10 -C -D & -G Decommissioning

Neptune Energy Netherlands B.V. (Neptune) has awarded Boskalis the contract for the removal, transport and load-in of three platforms. These platforms are located in the Dutch North Sea,
approximately 90 km west of Terschelling.

Large-190412_-_38.jpg

Borssele ALPHA/BETA

Royal Boskalis Westminster is a leading global marine contractor and services provider. With safety as our core value, we offer a wide variety of specialist activities to the oil & gas and renewa-bles sectors. These activities include marine instal-lation and decommissioning, seabed intervention, marine transport and services, subsea services and marine survey. In addition, Boskalis is a global dredging contractor, provides towage and terminal services across the globe and delivers marine salvage solutions. By understanding what drives our clients we are able to provide the solutions that enable them to meet their specific business goals. For this reason we are constantly looking for new ways to broaden and optimize our offering and are committed to expanding our proposition, supported by our financial strength. With our committed professionals in engineering, project management and operations, 800 special-ized vessels and an unprecedented breadth of activities in 90 countries across six continents we help our clients in the offshore industry push boundaries and create new horizons.

E_-_Tower_Crane_Installation.JPG

Çanakkale 1915 bridge

The 1915 Çanakkale Bridge, also known as the Çanakkale Strait Bridge, is a proposed suspension bridge being constructed in the Çanakkale area in Turkey. Situated just south of the towns of Lapseki in Asia and Sütlüce Village in Europe. The bridge will span the Dardanelles strait, about 10 km south of the Sea of Marmara.

Aberdeen bay offshore windfarm project

Boskalis was responsible for the eleven suction bucket jacket foundations, scour protection, 66 kV inter array and export cables and the installation of the wind turbine generators.

NASR.jpg

NASR full field development

Boskalis was subcontracted to install 2 topsides and 3 jackets in the NASR and Umm Shait oil fields: The Accommodation Platform/AP Jacket, the Separation Platform/SP Jacket and the Gas Treatment Platform/GTP Jacket are installed in the NASR Field. The installed net weights of the jackets ranged from 2,270 to 3,070 metric tons.