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Subsequent upgrade of Russian secret sub
26.03.2010
Subsequent modernization started at Russian classified diesel electric submarine B-90 Sarov, writes Rossiyskaya Gazeta referring to source at Zvezdochka shipyard (Severodvinsk). It was not specified what kind of upgrade will be provided to the sub commissioned in Aug 2008.
Very little is known about B-90. The only Project 20120 submarine was designed by Rubin Central Design Bureau for Marine Engineering. The project is classified since Sarov falls into a category of so called test stations used for testing new and modernized weapons and various shipborne systems.
Probably, the veil of confidentiality around B-90 might be related to intentions of use the sub for testing of latest nuclear reactor. Since commission into the Navy, the submarine has taken part in several tests; each time prior to a trial she faced engineering changes. It is not improbable that current modernization is somehow connected with coming tests.
The only thing is known that Sarov is powered with Kristall-27 powerplant with electrochemical generator; the plant makes possible to increase endurance up to 90 days. The hull of B-90 was taken from experimental submarine of Project Sargan laid down in 80's. The hull of Sargan was delivered to Sevmash shipyard in 2003.
Source: , photo: diesel electric B-90 Sarov (military.tomsk.ru)
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