Subsea electronics
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Seatools: the one-stop shop for subsea electronics


From individual components to complex custom-engineered subsea electronic systems

Seatools offers a broad range of subsea electric components, systems, and services. Our collection includes a wide array of subsea electric components, such as junction boxes, umbilical terminations, and subsea sensors. For more than 15 years we have successfully applied these components to the subsea vehicles and systems we deliver, some of which operate under the harshest of conditions.

In addition to individual components, Seatools delivers full-fledged electronic systems. Because subsea electronic systems frequently run in tandem with the hydraulic, mechanical, and control segments of a system, at this very crossroads Seatools’ multidisciplinary engineering approach offers great value. Properly devising a system requires a capable system integrator with knowledge and experience of all disciplines concerned. Our heave-compensated gangway project is an outstanding example of Seatools’ ability to fulfill this role. Facilitated by our advanced simulation capabilities, we successfully integrate all concerned engineering disciplines.

  • Subsea electronic components and modules, including sensors and subsea electronics modules
  • Rugged housings and electronics suitable for harsh environments (e.g. dredging)
  • Subsea electronic systems such as drive systems and ROV electronics
  • Advanced simulations and control of subsea electro-(hydraulic) systems
Value creation
  • Combination of extensive experience, standardized components, and strong engineering capabilities
  • Minimal commissioning times thanks to advanced simulations
  • One-stop shop
Track record
  • Delivery of numerous (ROV) electronic components and systems
  • Performed numerous simulations on electro-(hydraulic) systems

Combining our engineering capabilities and extensive experience with the use of our electric components as building blocks, we deliver highly reliable, cost-effective subsea electric systems in short time frames. Want to learn more?


  • Electronic components and sub-systems
  • Monitoring and control systems
  • Electro-(hydraulic) drive systems
  • Power and data transmission
  • Service and upgrades
Subsea electronic components

Subsea electronic components and sub-systems

We deliver standardized and custom-made subsea electronic components and sub-systems. Among the variety of underwater electronic components that we offer are subsea sensors, junction boxes, cable joints, subsea housings, and cable terminations. We also supply sub-systems, such as subsea electronic modules. Numerous components and sub-systems developed by Seatools are also deployed in the subsea vehicles we build; many years of experience and field feedback have informed their designs.

Learn more about our subsea electronic components on the following page.

Full insight and control your subsea assets and operations

Seatools is unique in its ability to provide a wide range of customized dredging, offshore, and subsea monitoring and control systems. Thanks to our experience and far-reaching subsea technology toolbox – containing a robust subsea sensor range and subsea measurement technologies like taut wires – we can draw on endless possibilities for the design, development, and construction that results in your custom-made system. As such, we can deliver tailor-made, rugged subsea monitoring and control systems for virtually any application based on proven technology, in short time frames, and in a cost-effective way.

Learn more about our subsea monitoring and control on the following page

Subsea electro-(hydraulic) drive systems

Seatools harbors vast experience in the design, analysis, and construction of subsea electro-(hydraulic) drive systems. Whether it concerns the propulsion of an electro-hydraulic ROV, or a highly accurate servo drive system for a subsea saw – Seatools is capable of providing highly reliable, custom-made drive systems for any type of subsea equipment. In addition, our advanced simulation capabilities have proven to generate significant value in the design of drive systems, enabling accurate predictions of drive performance under any condition.

subsea power and data transmission

Subsea power and data transmission

Seatools delivers an extensive range of capabilities, components, and systems that are related to subsea power and data transmission. This varies from (in-house or on-site) molding and termination capabilities to custom-made multiplexer and data transmission solutions. Solutions, that feature fiber optic-, acoustic-, and wireless-based technologies. A case in point is the deep-water A&R hook monitoring and control system, which was implemented in an environment that did not allow for power and data transmission cables. Seatools met this challenging requirement by powering the system with a battery-powered subsea HPU, while acoustic modems enabled data communication.

Service and upgrades

Seatools performs service and upgrade activities on self-manufactured and third-party manufactured subsea electro-(hydraulic) systems. For example, multiple upgrades of ROV control systems have been executed to increase their dynamic positioning performance.

How we create value

  • Combination of extensive experience, standardized components, and strong engineering capabilities


    Our value proposition for subsea electric systems combines a range of electric components (e.g. our subsea sensor range) with multidisciplinary engineering capabilities and an extensive in-house experience base in the area of subsea electronics. We have extensive knowledge of the performance and behavior of our standardized components, which function as building blocks of an electric system. Meanwhile our engineering capabilities and experience ensure that all performance criteria are met in an efficient way. A combination rarely found, which results in high-quality, cost-effective, and first-time-right systems that can be delivered within a short period of time.

  • Pre-optimized electro-hydraulic systems that minimize commissioning times and operational risk

    Because we combine electric control system development with advanced simulations, our control systems are delivered with pre-programmed, close-to-optimal controller settings. An offer that has proven to create great value, as it significantly reduces expensive, on-site commissioning times and delivers highly accurate control systems. In addition, failure case simulation enables the development of controllers that guarantee fail-safe behavior, thereby significantly reducing operational risk.

  • One-stop-shop

    Unique value proposition in the field of subsea electronic systems

    Since we do not only have a strong electrical engineering department, but also house the complementary engineering disciplines (such as mechanical, hydraulic, software, and control engineering), clients outsource full-fledged projects to a single supplier. This benefits quality and lead times primarily, but also means that projects are performed far more cost-effectively. Moreover, the burden of additional project management is shifted away from clients.


Would you like to discuss your project? Our experts are happy to discuss and advise on potential solutions for your project.




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