Turkey’s Latest Unmanned Submarine Can Launch Heavy Torpedo

Turkish firm STM showcased its newly developed Extra Large Class Unmanned Underwater Vehicle (XLUUV), “TENGİZ,” for the first time at SAHA 2026.

The “TENGİZ” stands out with its heavy torpedo launching capability, long mission duration, high level of autonomy, and "mothership" concept.

STM General Manager Özgür Güleryüz, stated, “TENGİZ is capable of performing a large portion of the critical tasks that a conventional submarine can carry out without risking personnel. These include intelligence gathering, mine warfare, torpedo launching to mothership teaming, it will strengthen Türkiye's technological sovereignty underwater.”

One of TENGİZ's remarkable capabilities is its "mothership teaming" concept. The platform was developed to carry and launch the STM NETA 300 autonomous underwater vehicle and the ALPAGUT smart loitering munition system underwater.

Developed in compliance with the 40-foot ISO container standard, the platform can autonomously begin its mission from ports, logistics support vessels, and dry dock vessels such as TCG ANADOLU.

Thanks to this structure, TENGIZ aims to provide a significant advantage in long-range and low-visibility operations by reducing the need for forward bases.