STM Defense Technologies continues to demonstrate its capabilities in unmanned autonomous underwater systems across various operational environments. The company's NETA 300 conducted underwater reconnaissance, search and rescue, and wreck detection operations off the coast of Kaş in Antalya. Equipped with advanced sonar systems and high-resolution imaging capabilities, the vehicle successfully detected a submerged tank during autonomous reconnaissance missions. This tank was placed underwater near Pigeon Island in 2017 following its retirement from the Turkish Armed Forces inventory to support diving tourism and artificial reef creation.

STM also participated in the TURNAs-2026 Exercise held in Antalya in October with the NETA 300. During the exercise's advanced force operations, the vehicle used its advanced sonar and sensor systems to autonomously detect and classify mines and mine-like underwater threats along transit routes, contributing to the safety of main naval units. Operating within the scope of seabed warfare, the NETA 300 also performed surveillance and inspection activities for critical infrastructure protection and pipeline examination, demonstrating the level of capability achieved by Turkish engineering in underwater operations.

The NETA 300, with its compact and modular design, can be transported by two personnel and is capable of operating at depths of 300 meters for up to 24 hours while reaching speeds of 5 knots. Equipped with side-scan sonar and gap-filling sonar systems, it supports mine and mine-like object detection, classification, and identification. A synthetic aperture sonar (SAS) integration option provides wider coverage areas and high lateral resolution. The vehicle can be employed in military applications including intelligence, reconnaissance, surveillance, mine countermeasures, and harbor defense operations, while in civilian applications it supports seabed research, pipeline inspection, renewable energy facility monitoring, and marine archaeology activities.

STM General Manager Özgür Güleryüz stated that maritime security is undergoing significant transformation with the development of autonomous systems. Emphasizing that STM combines its military maritime engineering expertise with artificial intelligence and autonomy technologies to develop game-changing systems in this field, Güleryüz noted that the NETA 300's autonomous reconnaissance mission in the Mediterranean demonstrates the level of capability achieved by Turkish engineering underwater. Following NETA, the company expanded its product family with the unmanned submarine TENGİZ and the kamikaze unmanned surface vessel STM YAKTU, committing to continue developing technologies that will make a difference in future maritime warfare environments.

With the first domestic sales contract signed, the NETA 300 is planned to enter service with the Turkish Navy. This development represents a significant milestone in the national defense industrial ecosystem's unmanned maritime systems sector.