VEEM Extreme Propulsion Reports 18.1% Efficiency Gain in LR-Witnessed Trials

VEEM says Lloyd's Register-witnessed sea trials of its VEEM Extreme propulsion package delivered an 18.1 percent improvement in propulsion efficiency compared with an industry-standard system. The same trials recorded an 11.9 percent reduction in fuel burn, figures the Australian manufacturer is now using to position the system for wider yacht-builder OEM adoption.

The technology was selected for the 2026 Cannes Yachting Festival Innovation Route and shortlisted in the sustainability category. VEEM's regional agent TBS Marine presented the system in Cannes, giving the company a European showcase for a propulsion package first launched in 2025.

Propeller and rudder tested as an integrated package

The VEEM Extreme concept combines a precision propeller, twisted rudder and flow-aligned shaft-line approach rather than treating each component independently. The Lloyd's Register-witnessed trial cited by VEEM compared the Extreme propeller and rudder package with a conventional reference system.

VEEM reports an 18.1 percent efficiency improvement from the trial configuration. The company attributes the gains to hydrodynamic design and to a proprietary high-tensile alloy that allows thinner blade sections while retaining the required structural strength.

Fuel burn fell by 11.9 percent in the trial

The same test programme produced an 11.9 percent reduction in fuel burn, according to VEEM. Lower fuel consumption has an immediate operating-cost effect and also reduces emissions for a given vessel profile, although real-world savings will depend on hull form, machinery, loading and operating speed.

The manufacturer also reported a 3.36-knot speed increase in earlier testing of the Extreme propeller and rudder combination. Those figures make the technology relevant not only to efficiency-led yacht projects but also to builders looking for greater performance from a fixed machinery package.

High-tensile alloy enables thinner blade geometry

VEEM's proprietary alloy is central to the Extreme range because it allows the propeller blades to be manufactured with thinner sections than conventional materials would normally permit. Thinner blades can reduce drag and help the propeller convert engine power into thrust more efficiently.

The material also allows the company to manage structural loads within the propeller and shaft system differently. For yacht builders, the value will depend on how the component package integrates with the vessel's full propulsion train rather than on the propeller alone.

Cannes selection targets European yacht builders

Selection for the Cannes Innovation Route gives VEEM a route into a market where many production and semi-custom yacht builders are under pressure to improve efficiency without abandoning established diesel propulsion. The company says it intends to support more European builders and owners with Extreme systems following the 2026 show.

The figures remain manufacturer-reported trial results, albeit from testing witnessed by Lloyd's Register, and should not be treated as a guaranteed saving for every yacht. Even so, an 18.1 percent efficiency gain and 11.9 percent fuel reduction are large enough to make the system worth following as it moves into wider OEM use.