Develops and manufactures the autonomous underwater drone Tethys ONE for inspections in murky waters and currents up to 3.5 knots.
Tethys Robotics AG
Schlieren (Zurich), SwitzerlandNew on Amplifa
About Tethys Robotics
Tethys Robotics AG is a spin-off of ETH Zurich based in Schlieren (Switzerland). The company develops and manufactures the compact underwater drone Tethys ONE, which operates autonomously as an AUV/ROV, holds its position independently in water currents up to 3.5 knots, and enables high-resolution inspections including 3D scanning even in murky waters. Its purpose is automated underwater inspections and assessments, particularly for Offshore Oil & Gas, Offshore Wind, Hydro and Search & Rescue. The drone is suitable for offshore and onshore use and is deployed quickly and easily on site. Since 2024, the system has been available for global orders; the company sells it through a growing reseller and partner network, including SeaRenergy and SepcoTech in Denmark. Aramco Europe publicly tested the system on a Swiss lake.
- Site
- Schlieren
- Processes
- Automated underwater inspection and assessments with underwater drone (Tethys ONE), High-resolution inspection (3D scanning, AUV/ROV operation), Underwater inspection and assessments with the autonomous underwater drone (Tethys ONE), Autonomous operation and 3D scanning, High-resolution inspection solutions for murky waters and currents up to 3.5 knots, Reseller/partner network
- Materials
- Underwater drone Tethys ONE, 3D scanning
- Certificates
- Certificates
- Employees
- 15
- Industries
- Offshore Oil & Gas, Offshore Wind, Hydro, Search & Rescue
- 01
Engineering & development of the underwater drone
- 02
Manufacturing/integration of the Tethys ONE system
- 03
Autonomous underwater inspection & 3D scanning on site
- 04
Evaluation and assessment of inspection data
- 05
Sales via direct contact and reseller/partner network
Technology & Processes
Underwater drone Tethys ONE
Autonomously operating drone for inspections in murky waters and currents up to 3.5 knots.
3D scanning
High-resolution capture of underwater structures for inspections and assessments.
Locations
Schlieren
CHHeadquarters and development
- Tethys ONE (AUV/ROV)
Product & Fields of Application
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Automated underwater inspection and assessments with underwater drone (Tethys ONE)Inspection | – | – | – | – | – |
| High-resolution inspection (3D scanning, AUV/ROV operation)Inspection | – | – | – | – | – |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Underwater drone (AUV/ROV) | Tethys Robotics Tethys ONE | – | Station-keeping in water currents up to 3.5 knots, suitable for offshore and onshore use | 2024 | Schlieren, Switzerland |
Additional services
Reference customers
Quality & Funding Network
Inspections are carried out autonomously with high-resolution sensor technology including 3D scanning, even in murky waters and currents up to 3.5 knots. No certifications are stated on the website.
| Evidence | Schlieren |
|---|---|
| Certificates |
Milestones
- 2023
Funding support from Wyss Zurich Translation Center, Bridge PoC, InnoBooster Gebert Rüf Foundation and Venture Kick
- 2024
Market launch of the Tethys ONE; system available for global orders
- 2025
Strategic partnership with SeaRenergy Offshore Holding GmbH
- 2025
Partnership with SepcoTech as partner in Denmark
- 2025
Aramco Europe tests Tethys ONE on a Swiss lake