The 70-meter-long vessel, developed by Damen in the Netherlands , is equipped with a 4 MW charger and uses a movable compensation bridge to connect to the wind turbine.
The SOV 7017 E vessel can charge directly from wind turbines. Photo: Damen Shipyards Group
Damen shipbuilding company unveiled its fully electric Service Vessel (SOV) with offshore charging capabilities on November 28th at the Offshore Energy 2023 conference and exhibition in Amsterdam, according to Offshore Energy . The company stated that the SOV 7017 E will pave the way for a significant reduction in emissions from offshore wind farm maintenance.
The vessel is 70 meters long and 17 meters wide, with 60 cabins providing accommodation for the crew and 40 technicians, along with storage and workshops. The SOV 7017 E is equipped with four rotary propeller engines, providing independent thrust in all directions and significantly reducing underwater noise.
When the company began considering the ship's design three years ago, it focused on offshore charging capabilities. Damen partnered with MJR Power & Automation, a UK-based company that had previously developed offshore charging systems for personnel transport vessels. The result is a charging system that uses a motion-compensating bridge to connect the ship to an offshore turbine or substation. The bridge is controlled from the bridge, requiring no manual interaction with the charging equipment. The entire system utilizes existing offshore infrastructure, thus eliminating the need for redesigning or adding components to the wind farm.
The charging process takes place while the vessel is in a power-saving mode called "green DP" and only takes a few hours using a wind turbine. The system is designed to international safety standards, specifically meeting regulations in the UK and Norway. MJR has developed a 4 MW charger for a 70 m vessel. The company is also building a larger 8 MW version that can charge vessels up to 90 m long.
The SOV 7017 E is equipped with a 15 MW-hour battery pack, sufficient for the vessel to operate for a full day. This is a lithium iron phosphate (LFP) battery pack, which is more durable than lithium nickel manganese cobalt (NMC) batteries, reducing the risk of fire and explosion.
An Khang (According to Offshoew Energy )
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