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# Diehl Wins IRIS-T SLM Adaptation Contract for F125 Frigates
- URL: https://www.adriadefense.com/diehl-wins-iris-t-slm-adaptation-contract-for-f125-frigates/
- Published: 2026-10-03T05:00:38.000Z
- Updated: 2026-10-03T05:00:38.000Z
- Description: Diehl Defence will adapt IRIS-T SLM for German F125 frigates under a development contract covering prototypes and live-fire testing.
- Author: AdriaDefense Desk
- Tags: Germany, CEE, Industry, Diehl Defence, Air Defense, Bundeswehr

Diehl Defence has signed a development contract with Germany’s Federal Office of Bundeswehr Equipment, Information Technology and In-Service Support (BAAINBw) to adapt IRIS-T SLM for the German Navy’s F125 frigates. Announced by the company on October 2, 2026, the agreement covers prototype construction and comprehensive test firings intended to prepare the air defense system for operational use aboard the ships.

The work will focus on integrating IRIS-T SLM into the F125 class’s existing architecture. Diehl did not disclose the contract value, a separate signature date or a timetable for operational introduction.

The agreement builds on trials aboard the F125 frigate Baden-Württemberg during Maritime Firing Exercise 2025 off Norway. Diehl installed a navalized anti-air warfare module on the ship’s C-deck and said the demonstrator met all test objectives, progressing from concept to firing in less than ten months.

![Diehl Defence concept illustration showing naval IRIS-T SLM launchers aboard a German F125 frigate.](https://storage.ghost.io/c/98/27/9827e0e3-b01e-4517-a907-dbdd380bcbf0/content/images/2026/10/Unknown.webp)

Concept illustration of IRIS-T SLM launchers aboard a German Navy F125 frigate. Credit: Diehl Defence.

The Bundeswehr reported that the frigate’s radars supplied data directly to the missile system’s software during those trials, creating an initial functional link between the ship’s sensors and the weapon. Three missiles were fired as planned, providing data to guide further adaptation ahead of potential series procurement.

The new contract moves the project from demonstration into adaptation development. It establishes a program to build and test prototypes, while the number of eventual operational systems and the schedule for fleet deployment remain undisclosed in Diehl’s announcement.