SubCtech stands at the forefront of developing advanced ocean monitoring systems and subsea power solutions. Our innovative technologies are perfectly suited for unmanned surface vessels (USVs), remotely operated vehicles (ROVs), and autonomous underwater vehicles (AUVs) navigating through demanding marine environments.
- Subsea Power Solutions
- Marine Monitoring Technologies
Subsea power Solutions
Battery Solutions for Underwater Applications
Standard Deep-Sea Batteries

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Rechargeable Subsea Batteries
Our high-capacity subsea lithium-ion batteries are engineered for longevity, with a lifespan of up to 25 years and a redundant design that maintains at least 50% capacity at all times.
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Underwater Batteries for AUV and ROV

An optional Customer Interface Module (CIM) allows for seamless integration with other components, such as embedded chargers, power distribution units (PDUs), and additional batteries.
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Custom Subsea Battery Solutions
We offer tailored subsea battery solutions to meet diverse specifications, including custom form factors and housings, with outputs reaching up to 400V and 25 kW.
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PowerCharger – Deep-Sea Battery Charging Solutions
Our range of PowerCharger solutions for subsea and vehicle batteries includes integrated battery management systems for improved safety and rapid charging capabilities.
PowerChargers can charge a single battery, multiple channels, or several battery modules, featuring a user-amiable one-button operation and a 7-inch colour touchscreen for comprehensive system data.
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Marine monitoring Technologies
Assessing Marine Environments through Sampling and Analysis
OceanPackâ„¢ RACK

It supports integration with nearly any oceanographic sensor, such as pCO2, sea surface temperature (SST), salinity (SSS), and algae sensors, along with devices like nutrient analyzers, water samplers, weather stations, and GPS receivers.
Up to 30 serial devices can be connected simultaneously, expandable via an optional RS485 bus. Data is stored on SD cards and can be accessed through USB.
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OceanPackâ„¢ CUBE

The built-in 7-inch touchscreen facilitates user-friendly operation. Up to 8 sensors or other serial devices can be connected, with data recorded on SD cards and retrievable via USB.
The OceanPackâ„¢ CUBE is packaged in a durable flight case for safe transport.
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OceanPackâ„¢ RACE

Data can be transmitted in real-time through the vessel’s onboard system or via an optional satellite or RF transmitter. pCO2 data can be cross-referenced with standard gases, enabling qualified data to be recorded in the SOCAT database.
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OceanPackâ„¢ BUOY
The OceanPackâ„¢ BUOY is a compact pCO2 analyzer designed for accurate measurements in shallow waters.It is easy to set up and maintain, making it suitable for even the smallest marine monitoring platforms, capable of operating unattended for several months.
The system can be equipped with a data logger, allowing for the addition of sensors such as CTD, dissolved oxygen, pH, gas, and nutrient analyzers. Raw, calibrated, and processed data is stored and transmitted in real-time.
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Subsea NetDI® Logger

The unit supports four sensor inputs and one host data output, with an optional expansion bus allowing connection of up to 30 serial devices. SD cards up to 32GB can be utilized for data storage, enabling years of high-resolution measurements to be recorded.
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ROV and AUV Frames

Data can be transmitted to ROV control centers via the vehicle tether, and our OceanViewâ„¢ dataserver can facilitate further processing, real-time display, and alarm settings.
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Greenhouse Gas Monitoring

- OceanXpert-Sea – precision subsea pCO2 or CH4 analyzer (IR or laser)
- OceanXpert-Lab – precision flow-through pCO2 and/or CH4 analyzer (IR or laser)
- OceanXpert-Air – precision autonomous IR Air-CO2 analyzer
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Microplastics Sampler

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Plankton Sampler
Our Plankton Sampler is designed for autonomous operation, even in rough sea conditions. It accommodates 16 sample bottles in a cooled surroundings, and features an intuitive touchscreen control panel for individual sample configuration and settings display.
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