STM is designer and system engineer company. Also worldwide company on project management. It is one of the few companies that can be among the top 100 defense companies in the world without any production infrastructure. In 5 years they will become one of the top 50 defense companies in the world. Currently one of Turkey's most important engineering companies.
The company is currently in charge of the modernization of Agosta class submarines belonging to the Pakistani navy and to Reis Class(Located very serious differences in design, fully customized system by Turkey). In addition, the MG110 Cosmos class, which is no longer capable of responding to any operational need, They working on a solution with AIP propulsion instead of pocket submarines since 2016. The Turkish navy is also working on MILDEN, which is independent of this project, and the responsibility for this project will probably be on the STM. Another example is Milgem project, which Pakistan Navy will be a primary user and learn its production infrastructure, all are STM's responsibility. Or largest ship in the Pakistan Navy, PNS Moawin, all engineering services camed from STM.