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Friday, May 28, 2021 

Wärtsilä will supply its HY containerised hybrid battery power and energy storage system to Maersk Supply Service, the Denmark based provider of offshore marine services and integrated solutions for the energy sector, to support Maersk’s goal of reducing the carbon intensity of its fleet by 50% before the end of this decade.

The hybrid power conversion will be carried out on the Maersk Minder, a deep water anchor handling tug supply (AHTS) vessel during the early part of 2022. This is believed to be the first AHTS hybrid battery conversion. The expectation is that the Wärtsilä HY system will decrease fuel consumption, and therefore also carbon emissions, by 15%, while at the same time reducing maintenance requirements while increasing operational performance.

Mark Handin, COO, Maersk Supply Service, said: “Maersk Supply Service is taking an active role in decarbonising the offshore support vessel sector. This requires both behavioural changes in the way we operate our vessels, as well as technological upgrades to our fleet. With this Wärtsilä HY Module we are taking a significant step on our path to further reduce the emissions from our diesel-electric vessels.”

Kenneth Bang, Service Account Manager, Sales, Wärtsilä Marine Power, said: “We share Maersk Supply Service’s decarbonisation ambitions, and are fully committed to developing the products, systems, and integrated solutions needed to achieve these ambitions. The Wärtsilä HY Module is a prime example of this commitment. Its innovative design and extended battery life offers real benefits and  will be a great fit for anchor handling tug supply vessels, as it already is for other vessel types.”

The main system components are the hybrid drive, the energy storage system (ESS), and the transformer. Control and monitoring of the hybrid system is handled by the energy management system (EMS). Together, the system achieves peak shaving, spinning reserve, and significant efficiency improvement by running the engines at optimal load and using the batteries to absorb a large proportion of the load fluctuations.

Wärtsilä has supplied the full engine room scope for this vessel, including the engines, thrusters, propeller arrangement, seals and bearings, and the integrated automation and planned maintenance systems. The company says that smart marine electric and power systems support decarbonisation through use of electrical solutions, renewable energy and the evolution of propulsion design to create greater flexibility and efficiency, making decarbonisation commercially attractive as well as environmentally desirable.

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