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Thursday, October 28, 2021 

Wärtsilä has been contracted to supply equipment for an upgrade to ‘Siem Pride’, an 89m Platform Supply Vessel (PSV) owned by Norway based Siem Offshore Rederi, which will convert the PSV for hybrid engine and battery propulsion, enabling the vessel to reduce the number of engines in use during operations, thereby considerably lowering its energy and fuel consumption.

The order with Wärtsilä was signed in the second quarter, 2021, and is announced following news of a deal between Siem Offshore and Vard Electro for an energy storage system to be installed on an offshore construction vessel.

Central to the conversion will be the Wärtsilä HY Module, which is a containerised solution on the deck of the vessel. Its energy management system, which acts as the overall brain for the system, creates a high level of interaction with the ship’s other onboard systems. The installation will be connected to the existing 690V main switchboard. The engines in operation may run at up to 95% maximum continuous rating (MCR) without risk of overloading or black-outs.

Jon August Houge, Operations Manager, Siem Offshore, said: “Decarbonising our operations is central to our strategy going forward, which is why we have taken this important step to convert the Siem Pride for hybrid propulsion. Wärtsilä has industry-leading experience and expertise in this field, and their upgrade solution will deliver considerable added value to the vessel’s performance.”

Steven Gavshon, GM Projects and Operations, Wärtsilä Marine Power, added: “We have worked closely with Siem Offshore for more than 10 years, and are excited at this possibility to further reduce the carbon footprint of their fleet. When operating on electric power, there will be obvious savings in fuel costs and emissions. Furthermore, when in use, the ship’s engines may operate more on LNG, which further enhances the ship’s environmental sustainability.”

For the upgrade, Wärtsilä will supply the hybrid drive, the energy management system, the transformer, batteries, and the switchboard modification. The DP system will be upgraded, while the ship design will be modified for the new arrangement. A deck house containing the equipment will be installed. Finalisation of the project is projected for April 2022, at which time the vessel will be awarded DNV’s Battery Power notation.

The vessel currently operates with two Wärtsilä 34DF and two Wärtsilä 20DF dual-fuel engines, as well as a complete Wärtsilä electrical package, including the integrated automation and power management systems, and the company’s Low Loss Concept power distribution system which offers higher efficiency, lower weight and volume, and high system redundancy.

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