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Corvus’ Dolphin NxtGen ESS gains Lloyd’s Register approval

The Dolphin NxtGen ESS battery system is designed for maritime use, prioritising weight reduction and space efficiency.

RanjithKumar Dharma March 05 2025

Corvus Energy has obtained Type Approval from Lloyd's Register (LR) for its Dolphin NxtGen Energy marine battery system.

The approval certifies that the system meets the safety and regulatory standards set by the maritime class society.

Corvus has already secured Type Approval from Bureau Veritas and DNV for the battery system.

The Dolphin NxtGen Energy storage system (ESS) is designed with safety features that exceed class and flag state requirements, according to the company.

It builds upon the success of the widely adopted Corvus Orca ESS, incorporating advanced safety measures such as passive single-cell Thermal Runaway (TR) isolation and a dedicated TR gas exhaust system.

The ESS features a lightweight construction, high energy density, and a modular design that optimises space and weight efficiency, vital for both small and large battery installations.

The Dolphin NxtGen ESS' design ensures it is well-suited to maritime environments where reducing weight and maximising space are of paramount importance, stated Corvus.

Corvus’ battery management system (BMS) and proprietary digital solutions, including real-time remote monitoring and digital twin technology, further enhance the operational safety of the Dolphin NxtGen ESS throughout its lifecycle.

These digital tools allow for continuous oversight and predictive maintenance capabilities.

Corvus Energy CEO Fredrik Witte said: “We are very pleased that the Dolphin NxtGen Energy battery system has now also received type approval from LR, confirming that it meets the high safety standards required in the maritime industry.

“Achieving LR Type Approval is a major milestone in our work to power a clean future as LR is one of the major class societies and a key player in many segments where the adoption of hybrid and electric solutions are high.”

Last month, Corvus Energy received an order to supply a large battery system for the world’s “first” fully electric offshore vessel.

The electric Commissioning Service Operation Vessel (eCSOV) will be built by Armon shipyard in Spain for UK-based shipowner Bibby Marine.

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