SubCtech
Kiel, Germany manufacturer of subsea Li-ion batteries, MWh-scale subsea energy storage and OceanPack ocean monitoring (FerryBox/pCO2) systems for ships, AUVs and offshore.
Kiel, Germany · Company
About
SubCtech was founded in January 2010 by Dipl.-Phys. Stefan Marx as a management buy-out. It became a certified "proved vendor" in the offshore industry according to ISO 13628-6 and moved into new premises in 2013. In August 2025 Gabler Maschinenbau GmbH, part of the Possehl Group, announced the acquisition of SubCtech, which also became a member of Gabler Ocean; Stefan Marx continues as managing director.
The company is certified to ISO 9001:2015 and manufactures according to ISO 13628-6 / API17F for subsea production systems, with IPC-A-600/610 class 3 production. It has consolidated all previous locations into a new headquarters at Fraunhoferstraße 17 in Kiel, providing about four times the former space for engineering, production, testing and logistics.
Products · 22 of 22
- OceanPack™ RACK
- OceanPack™ CUBE
- OceanPack™ RACE
- OceanPack™ AQUA
- pCO2 Top-Box™
- OceanPack™ BUOY
- pCO2 Subsea Analyzer (Lander)
- NetDI® Deck-Unit
- Subsea NetDI® Logger
- Li-Ion PowerLogger™
- OceanView™ Software & DataServer
- OceanXpert analyzers
- Nutrient Analyzers
- Plankton Sampler
- Microplastic Sampler
- Customised Batteries
- Energy Storage System (ESS)
- Basic Batteries (PowerPacks™)
- Vehicle Batteries (PowerPack™ Series)
- Subsea Batteries (Subsea UPS)
- PowerCharger™
- Consulting and project services
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