SubCtech builds autonomous ocean-monitoring instruments and subsea lithium-ion power systems. Its OceanPack systems measure carbon and environmental parameters, while PowerPack batteries supply AUVs, ROVs and other underwater equipment.
About
Founded in 2010 and headquartered in Kiel, SubCtech develops and manufactures marine environmental-monitoring and subsea-power equipment. The company operates two main product lines: autonomous underway measurement systems for carbon and other ocean parameters, and pressure-rated lithium-ion battery systems for subsea vehicles and infrastructure. Gabler Maschinenbau, part of the Possehl Group, acquired SubCtech in 2025 while retaining its operating identity.
SubCtech is relevant to maritime robotics on both the payload and energy sides. OceanPack systems can collect data over extended deployments on ships and autonomous platforms, while vehicle batteries support AUVs and ROVs at depths up to 6,000 metres in selected configurations. The company supplies instruments and power subsystems rather than complete autonomous vessels. Published headcount and experience figures cover the full company, and customer-specific vehicle volumes remain undisclosed.
Comparable profiles and adjacent companies connected by shared workflow, capability, or stack position.