Williams embraces HVO

Tender specialist Williams Jet Tenders has approved HVO in selected DieselJet engines across its range.

07 December 2023


Tender manufacturer Williams Jet Tenders has approved HVO100 fuel (hydrotreated vegetable oil) following successful first-stage testing on selected DieselJet engines.

Williams has approved HVO100 for use on all its Yanmar 4JH engine-powered tenders, including the DieselJet 415, 445, and 505 and Solas 505. The British boatbuilder says it encourages customers with these engines to use HVO100 fuel to reduce their carbon footprint, as it can decrease emissions without impacting performance.

As a result, all new product developments and product testing powered by these diesel engines will use HVO100. In addition, Williams’ fleet of vehicles, including delivery vans and lorries, as well as the Yanmar 4LV powered models, are also looking to transition to HVO100 once further testing has been completed.

The benefits of UCO (used cooking oil) HVO fuels include reduced greenhouse gas emissions. UCO HVO also produces fewer particulates, sulphur and nitrogen oxides compared to conventional diesel.


“We are committed to finding innovative sustainable solutions that reduce the direct emissions impact from our factory and our vehicles,” says Sarah Moore, sustainability specialist at Williams Jet Tenders. “By using UCO HVO, a renewable fuel made from waste cooking oil, we will accelerate our efforts to decarbonise.

“We hope that by using HVO in our fleet and in our approved test boats, we will raise awareness of the benefits of switching to alternative fuels.

“As we carry out exploratory testing on our products, it will allow us to confirm HVO use in more of our tenders, enabling us to achieve a greater reduction in our carbon footprint as more Williams Jet Tender engines are approved for use.”

Williams, which is based in Oxfordshire in the UK, currently offers 17 models in six ranges, including the Turbojet 285 and 325 and Evojet 70.

Floris Lettinga, director of sales and marketing at Yanmar Marine International adds: “Yanmar Marine is proud to partner with Williams Tenders. By integrating Yanmar’s HVO-approved engines across the Williams Tenders’ range of boats and vehicles, we are not just propelling innovation; we are supporting our customers in propelling a sustainable journey towards a cleaner future.”

Williams says this announcement is part of a broader commitment to sustainability, which has included several initiatives, including being awarded a grant by Innovate UK Edge to test alternative, more sustainable composite materials and completing Life Cycle Analysis (LCA) for its TurboJet 325 and DieselJet 415 to calculate their carbon footprint.

Williams Jet Tenders, which currently has over 140 staff, hired Moore as its full-time sustainability specialist in 2023 after launching a sustainability strategy in 2020. Further sustainability updates will be released in 2024.



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