Corvus to supply ESS for offshore support

The orders follow the successful sea trial of Harvey Energy, the first-ever LNG-battery hybrid retrofit of a platform supply vessel (PSV) in the Americas.

Harvey Gulf chief executive, Shane Guidry, said that clients and investors are increasingly demanding energy efficiency and emissions reduction. “This fleet of vessels will be crucial in assisting our clients’ efforts to achieve net carbon zero, and we will continue to listen to them and invest in technology that will assist with their goals,” he said.

Wärtsilä will integrate the battery-based ESSs, each with a capacity of 745 kWh, into its LNG-fuelled hybrid-electric propulsion system. The ESS and Wärtsilä energy management system will allow the vessels to operate in Dynamic Position mode on a single engine augmented by battery power, to operate more efficiently in transit and other operational modes, and to operate on battery-power only when stationary.

The four LNG-battery hybrid vessels Harvey Liberty, Harvey Power, Harvey Freedom and Harvey America will be fitted with the 1100VDC – 745 kWh ESSs in 2021 and are expected to go into service in early 2022.