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maresystems GmbH is a well experienced and worldwide operating service provider of maritime navigation, radio communication, ship automation and ballast water treatment and annual surveys and certification inspections with more than 25 years experience.

Our highly experienced and expert 24/7 technical support provides direct access to skilled support engineers as well as our worldwide network of representatives to assist you with support, service and spare parts throughout the life cycles of the automation system.

In addition, we provide maritime automation engineering expertise such as project management, basic and detailed design, interface engineering, clarification of measuring points, clarification of mimic diagrams and classification approvals for automation engineering.

Approved by the major Classification Societies as a service supplier for communication equipment (GMDSS Radio Survey) and voyage data recorder (Annual Performance Test):

Approved by the Classification Societies

  • DNV-GL
  • Bureau Veritas (BV)
  • Lloyd’s Register (LR)
  • ClassNK
  • ABS

Brands we serve

  • Wärtsilä SAM Electronics
  • MacGregor Germany (former Interschalt martime systems)
  • Samsung Heavy Industries
  • Hyundai Heavy Industries
  • Wuxi Brightsky Electronic

Upgrades and Retrofits

The Stein Sohn vista® automation systems have successfully been re-fitted on many types of vessels. The modular system set-up and flexible system configuration makes it easy to replace and minimizes costs by utilizing existing field cabling.

We provide total package including site survey, engineering, removal of old equipment, new installation, commissioning and training during docking period or while sailing within shortest and optimal time.


  • Cost savings in operation, maintenance and spares
  • Modular system structure to enable cost-efficient solutions
  • Proven and type approved equipment
  • Experienced and highly-skilled engineers

Consumables and Spares

We stock and supply a wide range of original spare parts and consumables for a variety of manufacturer's equipment, e.g. ballast water treatment, ship automation and voyage data recorder.

Refurbished spare parts
We also provide for Stein Sohn vista® automation system a wide range of refurbished spare parts – a cost-effective alternative to purchasing new spare parts – with a full 6 months warranty based on availability.