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Company profile	STEIN SOHN GmbH is a German developer and manufacturer of high-reliability measurement and control solutions for naval and defense applications. Founded in 1878 and headquartered in Norderstedt, Germany, the company combines over 145 years of engineering experience with deep expertise in safety-critical systems for demanding maritime environments. STEIN SOHN designs and produces instruments, valves and control systems for pressure, temperature, flow and level measurement, with a strong focus on naval shipbuilding. The company is particularly recognized for its long-standing involvement in submarine programs, where reliability, shock resistance, non-magnetic properties and long-term availability are mission-critical. All core competencies – development, manufacturing, testing, qualification and cleanroom assembly – are maintained in-house in Germany. STEIN SOHN works closely with shipyards, system integrators and OEMs, supporting both new-build and retrofit projects.
Products & Services	STEIN SOHN offers a comprehensive portfolio of measurement, monitoring and control solutions for naval platforms and defense-related maritime infrastructure. The product range includes pressure gauges, differential and double pressure instruments, depth measuring systems, temperature instruments, pressure and level sensors, safety switches, shut-off and control valves, as well as integrated monitoring solutions with electrical signal output (e.g. 4–20 mA). All products are designed for harsh naval environments and meet demanding requirements regarding shock and vibration resistance, non-magnetic behavior, accuracy and operational safety. Systems are qualified according to relevant naval and military standards and are suitable for use in submarines, surface combatants, auxiliary vessels and shore-based naval facilities. STEIN SOHN supports customers throughout the entire lifecycle, from engineering and customization to qualification, spare parts supply, repair and long-term support.
References and export activities	STEIN SOHN solutions are in service on numerous naval platforms worldwide. References include German-designed submarine classes such as 212A, 212CD, 214, 218SG, as well as surface combatants including frigates and corvettes of the German Navy. Export programs span NATO and allied navies in Europe, South-America, Asia and the Middle East, including South Korea, Singapore.
Target group	Naval shipyards, system integrators and OEMs involved in the design, construction, modernization and maintenance of naval platforms. In addition, defense ministries, naval forces and organizations responsible for procurement, sustainment and lifecycle management of surface vessels, submarines and naval infrastructure.
Competitive advantages	Proven performance in submarine programs as the most demanding naval environment. German engineering and in-house manufacturing ensure quality, reliability and supply security. High vertical integration enables customization and rapid engineering support. Long-term availability, repairability and lifecycle support reduce operational risk and total cost of ownership.
Ideal Business Partners	Naval shipyards, defense system integrators and OEMs seeking reliable European suppliers for mission-critical systems. Partners valuing long-term cooperation, technical collaboration and lifecycle support in naval new-build, retrofit and modernization programs within NATO and allied defense frameworks.