Mitsui O.S.K. Lines (MOL) has installed two Wind Challenger hard sails on a 174,000-cbm LNG carrier under construction at Hanwha Ocean's Geoje yard, marking the first deployment of wind-assisted propulsion on this vessel class and establishing a fresh reference point for emissions-led fleet modernisation.
The membrane-type LNG carrier measures about 286 metres in length and 46 metres in width. Each fibre-reinforced plastic sail reaches up to 49 metres in height and about 15 metres in width, forming a telescopic propulsion support system. The vessel is scheduled for delivery in the second half of 2026 and is set for long-term charter from MOL Encean to Chevron Asia Pacific Shipping following a September 2024 agreement.
MOL says the sails are intended to reduce fuel use and greenhouse gas emissions while maintaining cargo operations. The layout has been designed to limit changes to mooring arrangements and minimise impact on ship-to-shore operations. The concept received approval in principle from ClassNK in August 2024 after risk assessments covering sail placement, visibility, emergency operations and safety measures; GTT separately assessed the impact of the installation on the cargo tank structure.
Bringing wind-assisted propulsion into the LNG segment underscores shipping's diversified approach to meeting IMO 2030 and 2050 emissions targets. The Wind Challenger system was developed in Japan by Oshima Shipbuilding and previously trialled on dry-bulk vessels. Its move into LNG strengthens the case for hybrid emissions strategies that combine alternative fuels with wind energy.
Key Takeaways:
1. MOL fitted two Wind Challenger hard sails on a 174,000-cbm LNG carrier at Hanwha Ocean's Geoje yard.
2. It is the first deployment of wind-assisted propulsion in the LNG carrier class.
3. Each fibre-reinforced sail reaches up to 49 metres tall in a telescopic propulsion-support system.
4. The vessel will be delivered in H2 2026 and chartered long-term to Chevron Asia Pacific Shipping.
5. ClassNK granted approval in principle in August 2024; GTT assessed cargo-tank impact.
