Russia’s P750-B Serval non-nuclear submarine project was presented at the Fleet 2026 International Naval Show. The United Shipbuilding Corporation introduced the vessel as a platform designed for a broad range of combat missions and equipped with an air-independent power system.

According to USC, the system allows the submarine to travel underwater without surfacing for up to 1,200 miles. Its power plant is based on a closed-cycle gas turbine engine that runs on diesel fuel both submerged and on the surface, with cryogenic oxygen used as the oxidizer.

Serval is intended for operations near the coast and in the close maritime zone. The submarine can strike shore-based targets, engage individual enemy surface ships and vessels, destroy underwater targets, conduct covert patrols and lay mine barriers.

A separate part of the project’s capabilities is linked to reconnaissance and sabotage teams. The submarine is designed for their covert delivery, landing and subsequent recovery. A lockout chamber for combat swimmers is planned in the bow section.

The Triton-2 midget submarine is expected to be used to transport divers. It is housed in the permeable section of Serval’s bow, so it should not stand out externally.

The submarine’s weapons package includes 533-millimeter torpedoes, missiles and mines. Among the project’s stated features are maneuverability and stealth. The crew is limited to a maximum of 20 personnel, while the submarine can dive to 300 meters and remain at sea for up to 30 days.