Dutch group Boskalis is to spend “sizeable” amounts of money on hybrid retrofits for its offshore vessels.

The giant contractor and shipowner said it will convert “numerous” ships through the use of energy storage systems.

The “power packs” will cut fuel consumption and associated carbon dioxide and nitrogen oxide emissions by an average of up to 20%.

The battery systems will also provide a power supply and energy storage while the vessels are docked and contribute to quieter and more efficient operations offshore.