Independent DNV assessment confirms year-on-year improvement in hull performance and fuel efficiency.
Jotun, global supplier of marine coatings, has reported that vessels treated with its products are estimated to have avoided 11.8 million tonnes of CO₂ emissions in 2025, up from 11.1 million tonnes the previous year. The figure has been independently verified through a technical evaluation conducted by DNV.
The assessment is based on the average speed loss of the vessels included in the evaluation, compared to an industry benchmark as referenced in ISO 19030. DNV employed its MASTERv2 emission prediction model, combining AIS data and Jotun-supplied information on average speed loss over a five-year drydocking cycle.
“This evaluation demonstrates a year-on-year increase in verified avoided emissions and helps quantify the connection between hull performance, speed loss, and emissions. Independent verification provides confidence in our documented speed loss performance,” has commented Morten Sten Johansen, Global Category Director Hull Performance at Jotun.
In addition to environmental benefits, the improved hull performance is estimated to correspond to fuel cost savings of approximately USD 2 billion. To put this into context, 11.8 million tonnes of CO₂ is roughly equivalent to the annual emissions of 2.5 million petrol-powered cars, according to calculations from the US Environmental Protection Agency.
The 2025 figure has been verified under the same methodology as 2024, with a margin of +2.5 million tonnes and -2.0 million tonnes CO₂. The evaluation follows ISO 19030 principles, measuring average speed loss over the last four years of a five-year drydocking interval.
“We are pleased to support Jotun on this project. This verification quantifies avoided CO₂ emissions for the vessels included and provides a documented basis for understanding the emissions impact of hull performance,” has stated Olav Rognebakke, Head of Section Hydrodynamics and Stability at DNV.
“As the Home of Hull Performance, we remain committed to delivering measurable value to the maritime industry. These verified results highlight the significant role hull performance plays in energy efficiency. Our continued investments in R&D and industry collaboration underpin our Clean Shipping commitment, helping reduce carbon emissions, save fuel, and protect biodiversity,” has concluded Morten Sten Johansen.