More than 100 years ago H.M. Stein Sohn started with the development of ship automation systems.

H.M. Stein Sohn was one of the leading German manufacturers of Integrated Ship Automation Systems for all kind of vessels. All products and systems are designed for deployment on the high seas and fulfil the high safety requirements of all major Classification Societies.

H.M. Stein Sohn is operating world-wide and is co-operating with a large network of partners. They are represented at all major shipbuilding locations around the world with references from more than 10.000 installations on vessels. H.M. Stein Sohn GmbH has been sold by Interschalt AG on February 2007.


Maresystems GmbH takes over the automation business of Interschalt

The owner-managed company maresystems GmbH located in Hamburg/Germany has taken over the further development, manufacturing, distribution and service of Interschalt’s maritime systems GmbH for CAMOS® 6809/2000 and VISTA® AUTOMATION integrated monitoring and alarm systems on March 1, 2017.

Maresystems, as a specialist for professional worldwide maritime services, will remain a key long-term production supplier of ship automation systems and is pleased to provide you with a far-reaching solution for maintaining, producing and retrofitting automation systems. At maresystems, the monitoring and alarm segment VISTA® and CAMOS® represents a strategic addition of the line of maritime navigation, radio communication, ship automation and ballast water management.

The maresystems team is well familiar with Interschalt vessel automation systems and will be able to support you from the same location in Schönberg with the proven high-quality work, regardless of where you are.

Scope of delivery

Hotline, Spare Parts & Service

Our hotline service offers competent and quick assistance and rapid spare parts without any administrative delay or ticket system. We keep a large assortment of high-quality spare parts in our large warehouse.

Easy plug and play of components done by the crew saves money instead of paying for expensive travel and service time.

New build & retrofit projects

We offer cost effective retrofitting and complete automation systems.

We take care of the whole project, from the first ideas and meetings with the customer including installation and commissioning.