ETH-Spin-off secures €3.5 million to advance its under water robot

The Tethys ONE under water robot by Tethys Robotics operates at depths of up to 300 meters and is designed for safety‑critical missions, including inspections and maintenance in offshore wind, oil, and gas sectors, disposal of explosive remnants of war, and search-and-rescue missions under extreme conditions. The technology allows remote or autonomous missions with high-resolution 3D visualization for simplified navigation and automated data collection.

The drone is already being tested with pilot customers in the offshore wind and energy sectors, assisting in the inspection of turbines, platforms, and subsea cables. More than 30 pilot projects have been launched. In addition, the company currently works with the Swiss Army and the Swiss Drone and Robotics Centre (SDRC) and plans to deepen collaboration with public safety authorities and international organizations in the field of ordnance disposal.

The ETH Zurich spin-off has now closed a €3.5 million pre-seed financing round led by Redstone with Euregio+ & Alpine VC, and backed by Zürcher Kantonalbank, ETH Foundation, Kickfund, and Venture Kick. The capital will be used to further develop and scale Tethys ONE. 

“With our technology, we aim to enable fully autonomous underwater inspections – from data capture to analysis. That way, we deliver precise, reproducible results without human risk; faster, safer, and more efficient than ever before. With the new funding, weʼll bring Tethys ONE into safety‑critical applications worldwide and set new standards in underwater inspectionˮ says Jonas Wüst, CEO & Co‑Founder of Tethys Robotics.

(Press release / LF) 
Image: Tethys ONE underwater