With almost 30 years of experience, SubCtech has established its position among leading manufacturers of ocean and subsea technology for industry and science. SubCtech develops state-of-the-art maritime technologies in two business units:

Ocean Power“: Our fully approved high-efficiency Li-Ion batteries guarantee high-reliability AND high-safety for your AUVs, ROVs or offshore subsea Oil+Gas applications. We offer qualifications according to API17F, MIL-STD, UN T38.3, DNV-GL and others.

Ocean Monitoring“: Standardized underway (“FerryBox”) and subsea measurement systems enable you to investigate any parameter at any place and in any depth of the ocean. We produce optical CO2 analyzers with autocalibration according to SOCAT standard.

SubCtech philosophy: highest quality and reliability; innovative, flexible and customized solutions. With our flexible R&D department, we solve specific customer requirements.

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10 years SubCtech – celebrations on June 18th

In January 2010, SubCtech GmbH was founded by Dipl.-Phys. Stefan Marx as a management buy-out. During the next years, SubCtech has established its position among leading manufacturers of ocean and subsea technology for industry and science. To celebrate this occasion of the 10th anniversary, on June 18, 2020 the big celebration takes place. Customers, partners […]



Oceanology International 2020, London UK, 17-19.3. March 2020 & other upcoming fairs

Fairs for 2020 are scheduled – we are happy to announce our participation for: OI London (17-19.3.2020) – booth G300 – visit Oceanology International offers the world’s leading forum where industry, academia and government share knowledge and connect with the ocean technology and marine science communities. Oceanology International’s world-class exhibition and conference help bring […]



OceanPack RACE® on Vendée Globe sailing yacht

Fabrice Amedeo (NEWREST) will participate Vendée Globe 2020 with our OceanPack RACE® system. See the teaser:



Water tank project for Puerto Bellavista

SubCtech has funded a drinking water supply in a remote region in Ecuador from last year’s profit. This helped a lonely village a lot, that previously only had brackish water and salt water for washing and cooking. The resulting lack for the children was a problem. The volunteers Jakob and Max took over the project. […]



Boot 2020 in Düsseldorf

With almost 250,000 visitors, boot Düsseldorf is the world’s largest boat and water sports fair and every year in January the “meeting place“ for the entire industry. From 18 to 26 January 2020, around 2,000 exhibitors will be presenting their interesting new products, attractive further developments and maritime equipment. Meet SubCtech on „love your ocean“ […]



OceanObs 2019 in Honolulu, Hawaii

Dr. Stefan Raimund (SubCtech France) and our distributor Mark Warren, ESNE (USA). More about ESNE at Connecting Science and Society As part of the decadal conference series, OceanObs’19 will galvanize the ocean observing community ranging from scientists to end users. OceanObs’19 seeks to improve response to scientific and societal needs of a fit-for-purpose integrated […]



Greta sails with Malizia, OceanPack RACE on board

Team Malizia, skippered by Pierre Casiraghi and Boris Herrmann have the great honour and pleasure to sail Greta Thunberg from the UK to New York for the UN Climate Action Summit on Malizia II, kicking off a climate tour through the Americas over the next few months. The Malizia team also developed the Malizia Ocean […]



Li-ion battery for a fuel cell UUV

SubCtech has developed and built the Li-Ion battery for an innovative long range Unmanned Underwater Vehicle (UUV). The UUV is being developed by Cellula Robotics Ltd. under the Canadian All Domain Situational Awareness (ADSA) Science & Technology (S & T) Program developed and built. Known as “Solus-LR”, the UUV will have a target range of […]



3rd Offsore Battery Days / Oslo Battery Conference, Norway, Oslo, 26-27. August 2019

The 3rd OBD Battery Conference will meet to discuss and provide a platform for technological innovations and business opportunities with the latest updates in that fields in Norway and abroad. The conference is held once a year and is the leading Battery conference in Norway, bringing together participants from leading private and public companies, start-ups, […]