Partnership for USV Build Will Enable Surveys at Scale : A Co-Authored Feature by HydroSurv and Rim Drive Technology
We’re pleased to share that our latest third-generation USV platform, the REAV-47, has been featured in Sea Technology magazine in a co-authored article with propulsion partner Rim Drive Technology.
The article explores how the REAV-47 represents a significant milestone in HydroSurv’s mission to deliver autonomous systems that are industrialised, trusted and field-proven. Purpose-built for nearshore, multi-day coastal surveys, the vessel integrates Mastervolt’s energy systems with Rim Drive Technology’s electric propulsion – marking the first use of a rim-driven thruster on a HydroSurv platform.
Two variants of the REAV-47 are now available: a fully electric 24-kWh model and a 12-kWh battery-hybrid configuration optimised for extended operation in remote environments. With a 72-hour endurance capability and over 97% CO₂ emissions reduction compared to conventional diesel workboats, the platform demonstrates the environmental and operational value of hybrid-electric USVs.
The first vessel, USV Bris, was delivered to Nordic USV AS in Bergen earlier this year and is the first of three REAV-47s supporting low-emission survey capabilities in Northern Europe. Another REAV-47 was delivered to Geodetic Offshore Services Limited (GOSL) for hydrographic and geophysical survey operations in Nigeria.
Looking ahead, HydroSurv is integrating the benefits of Rim Drive propulsion into its upcoming REAV-25 USV – based on our popular REAV-28 platform. The REAV-25 has been redesigned to meet the requirements of U.K. Maritime Guidance Note 702, featuring a 24-V Rim Drive Technology configuration tailored for day-work-capable USVs, with a clear focus on evolving safety and regulatory standards for small maritime autonomous surface vessels.
HydroSurv’s latest collaboration with Rim Drive Technology demonstrates the power of engineering partnerships in realizing the promise of industrialized, forward-looking robotic solutions for the marine sector’s toughest challenges.
