New concept in wind farm daughter craft

Speed of Change is constructed from composites and is based on a deep vee hull that will allow speeds of up to 30 knots Speed of Change is constructed from composites and is based on a deep vee hull that will allow speeds of up to 30 knots

A new design of offshore wind farm daughter craft has been delivered by the iXblue shipyard in France reports Dag Pike.

This new concept has been delivered to Louis Dreyfus Armateurs (LDA) and it will operate from LDA’s new mother ship, the Wind of Change that is under construction at the Cemre Shipyard in Turkey. The daughter craft has been named Speed of Change and it will operate on four wind farms off the coast of Germany (Borkum Riffgrund 1 and 2 and the Gode Wind 1 and 2) and will enable the transit of technicians to the wind farm sites for the maintenance of the turbines.

The mother ship, the Wind of Change will be equipped with a walk to work transfer system and for the operation of the daughter boat, the Speed of Change, the mother ship has been equipped with a motion compensated landing stage so the technicians can board safely. This will enable maintenance operations to take place at adjacent turbines when the ship is moored at one turbine.

Speed of Change is constructed from composites and is based on a deep vee hull that will allow speeds of up to 30 knots and a cruising speed of 23 knots. The hull is fitted with a squared off bow shape and heavy duty rubber fendering to allow the boat to moor bow forward at the wind turbine in the normal transfer mode for the crew transfer operations. The overall length of the boat is 11.75 metres and the beam is 3.70 metres with the boat operating at a normal draft of 0.85 metres. The hull shape has been developed to give improved handling at sea.

Power comes from a pair of Volvo Penta D6 diesels each producing 330hp. These are coupled to a conventional shaft and propeller system. The fuel capacity is 800 litres and inside the fully enclosed superstructure there is sprung seating for the two person crew and 8 technicians as well as an enclosed toilet compartment. The boat can carry a cargo load of 1 tonne or half this amount when carrying the 8 technicians.

Speed of Change has been approved by a classification society according to the French offshore requirement: “Offshore Category Ready”. For iXblue this daughter craft represents another milestone in the company’s presence and strategy in the growing renewable industry market.

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