Boskalis CSR report 2017

Impact on the environment CSR 2017 – BOSKALIS 40 Building a society that demands less energy and is less dependent on fossil fuels: these are the ambitious goals of the energy transition. Boskalis encourages investments in low-carbon or carbon-free technologies, and activities that contribute towards greater availability of renewable energy. SUPPORTING RENEWABLE ENERGY Our offshore wind farm activities contribute towards greater availability of renewable energy. Boskalis offers cost-effective balance-of-plant solutions – with fewer interfaces for our clients – thereby contributing to lowest LCOE (Levelized Cost of Electricity). As one of the leading players in this market, we aim to keep expanding our role by providing a broader range of services for increasingly complex projects. Combining this with our cable-laying capabilities, enables us to offer turnkey solutions for the development of offshore wind farms, that comply with strict European and international industry standards. With the conversion of one of our semi-submersible heavy transport vessels into a 3,000-ton crane vessel – the Bokalift 1 – we now have the industry’s largest self-propelled crane vessel that is able to carry out cost-effective and flexible heavy lift and installation work offshore. In partnership with High Voltage engineering specialist EDS, we launched Cable Integrity Solutions. The growing number of offshore wind farms, which are also being built further offshore, means that the risk of damage to inter-array and export cables is also increasing. Such repairs are time consuming and involve major losses of production for clients. The Prepare to Repair model promotes critical preparations to be carried out upfront, ensuring that if a cable fails, arrangements are in place and the repair process can be started immediately. This minimizes downtime by up to 70%. In 2017 we laid 587 kilometers of cables, including: ‚ ‚ Installation of two 45-kilometer-long export cables and 56 inter-array cables for the Galloper offshore wind farm. The wind farm, which will consist of 56 wind turbines, is located about 27 kilometers off the coast of Suffolk, United Kingdom. ‚ ‚ Commencement of work on the Offshore Balance of Plant contract by Vattenfall, for the construction of Aberdeen Offshore Wind Farm, also known as the European Offshore Wind Deployment Centre. The project consists of eleven wind turbines with a capacity of 92.4 MW. The scope of the activities for Boskalis includes the design, procurement, fabrication, supply, transportation and installation of eleven suction bucket jacket foundations and scour protection, the procurement, supply, transportation and installation of 66kV inter-array and export cables and the provision of the wind turbine transportation and installation vessel. The use of suction bucket jacket foundations ENERGY TRANSITION

in conjunction with the large wind turbines and the use of high capacity 66kV power cables make this project unique. ‚ ‚ The repair of two inter-array cables and one export cable in UK waters. The cable-laying barge’s 8-point mooring system and 2.3 depth made it highly suitable for repairing two inter-array cables in the shallow waters of the outer Thames Estuary. The export cable repair was carried out 20 kilometers offshore, in the Irish Sea. DECOMMISSIONING The safe and environmentally friendly decommissioning of offshore platforms is a complex challenge. There are hundreds of platforms waiting to be decommissioned on the North Sea alone. Based on our expertise in the field of engineering, logistics, surveys and ecology, Boskalis has a leading edge in this growth market and is committed to ensuring the safe and sustainable decommissioning of such platforms. In 2017, Boskalis was involved in a number of decommissioning projects including Lehman BH, Viking Bravo, Vulcan & Viking and Thames complex.