Series production was cancelled in favor of a new design. Some sources report the ship has turbo-electric drive. The first unit is expected to launch after 2000. First two units had very long trials periods and reportedly were unreliable, but they have recently undergone major refits and are fully active. These vessels probably are rather noisy and primitive in terms of combat systems.
Some sources report the ships have turbo-electric drive.
The specifications listed above reflect the normal equipment of the 'Improved Kilo' design. These units apparently were started for the Russian Navy but sold before completion. These are standard export versions of the 'Kilo' design, purchased in 1994 and delivered from stocks on hand. Reportedly both had become inoperable by 1997 and will be refitted in Russia. Krasnoye Sormovo Zavod 199, Nizhniy Novgorod, Russia.