LUXEMBOURG – Construction has started on Jan De Nul’s crane vessel Les Alizés at the China Merchants Heavy Industry (Jiangsu) Co. Ltd. shipyard.
The Les Alizés is specifically designed for loading, transporting, lifting, and installing offshore wind turbine foundations. The main features are a main crane of 5,000 metric tons (5,512 tons), a deck loading capacity of 61,000 metric tons (67,241 tons), and a deck space of 9,300 sq m (100,104 sq ft).
Unlike the company’s other offshore installation vessel under construction Voltaire, the Les Alizés does not have four legs to lift itself above the sea surface. It is a crane vessel for floating installation, which means that it is not dependent on the water depths and the seabed conditions. The Les Alizés will be equipped with a DP-2 system.
Also, the vessel will be equipped with an exhaust gas filtering technology that complies with the European EURO STAGE V guidelines for emissions on land and inland waterways. This dual exhaust filter system removes up to 99% of nanoparticles from emissions using a diesel particulate filter followed by selective catalytic reduction system for NOx removal, the company said.
In addition, the crane vessel will be fitted with an energy storage system (ESS), forming a hybrid setup together with the main diesel engines. This ESS is expected to compensate power peaks on the main engines and recover energy from the heavy lift crane, resulting in optimized engine operation and less fuel consumption and emissions.
Finally, the Les Alizés will have a Cleanship NDO7 label and a Green Passport EU label. The first label confirms that the vessel checks and minimizes the waste water and all other residual waste. The second Green Passport label means that all materials and hazardous substances are mapped out during the construction phase, in order to facilitate the recycling of the vessel when decommissioned. Both certificates are issued by a specialized external agency, the company said.