Tethys Robotics

Tethys Robotics builds compact underwater inspection robots for infrastructure, environmental and industrial survey work. Nortek documents the company using a DVL 500 Compact to support robust navigation and localization on its compact ROV platform.

Facts

Segment: Maritime Robotics
Country: Switzerland
Website: https://www.tethys-robotics.ch/

Products

Tethys ONE

Funding

2025-10-30 - Pre-seed - $4.1M - Tethys Robotics raises EUR 3.5M pre-seed round - Tethys Robotics raised EUR 3.5 million in pre-seed funding for autonomous underwater inspection systems. - source: venturelab.swiss

Investors

Alpine VC - Participant - Angel / Individual - 1 funding event - first seen 2025-10-30
ETH Foundation - Participant - Angel / Individual - 1 funding event - first seen 2025-10-30
Euregio+ - Participant - Unknown - 1 funding event - first seen 2025-10-30

Supply

Nortek - Inbound - Positioning & Navigation - Tethys Robotics uses Nortek DVL 500 Compact to support navigation and localization on its compact underwater inspection robot - source: nortekgroup.com
Reach Robotics - Inbound - actuation and motion control - Tethys Robotics integrated a Reach Alpha grabber for military EOD, search and rescue use cases - source: reachrobotics.com

Timeline

2025-05-27 - Partnership - Tethys partners with SeaRenergy for offshore subsea inspection - The partnership targets offshore inspection work in the North Sea and Baltic Sea regions. SeaRenergy is the named offshore services partner. The partnership connects Tethys to a customer, supplier or channel for maritime autonomy, underwater robotics or… - source: tethys-robotics.ch

Relations

SeaRenergy - Technology Partner - Tethys Robotics partnered with SeaRenergy for offshore subsea inspection services.