The single Project Beluga-class experimental submarine featured a hull shape similar to but smaller than that of the nuclear propelled Sierra-class, with a sail similar to that of the Alfa-class. This research and development platform may have been used for testing of hull forms, propulsors and boundary layer control techniques.
After the development of the first nuclear-powered submarine, Soviet engineers experimented with tactical and technical characteristics relating to speed to improve sonar performance and noise levels. The highest priority was speed, and the Soviets wanted to control sonar performance and noise by influencing the boundary layer with a polymer solution. The need for reduction in frictional drag has long existed. Means for reducing frictional drag include laminarization, air cavities and air films, riblets, magnetohydrodynamics, microbubble ejection, and polymer ejection.
The technical design of project 1710 was developed in 1975. Although project 1710 is an experimental submarine, the shape and the main measure conditions were for the development of submarines, project 696 and project 705 Lira were used. The project 705, NATO code Alfa, was one of the fastest high-speed subs.
The boat was equipped with a low-noise seven blade propeller with the was to reach a maximum speed of 25 knots. The underwater speed and the high tax and manoeuvrability the Beluga was confirmed during tests. The boat was peppered with sensors that were connected to the measuring instruments. Flow sensors that were mounted on Tower, rudder, and fuselage were mainly. We will grow not all sensors, they are simply too small. Also it had a kind of "Necking" the boat to the body. Probably this constriction due to the ring injectors for the polymer solution was built. Is unfortunately unknown.
The experimental submarine project 1710 was a unique scientific ship. Only the USS Albacore (AGSS-569) 1953 hydrodynamic research would be equivalent. Experiments with polymer solutions on board the USS Albacore did not reach use in the fleet. The Beluga allowed hydrodynamic and acoustic research at a new high quality level, and brought the success and knowledge that was not available as the Albacore nor was commissioned.

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