Russia’s Nerpa Sub Passes Final Trials

Russia's Nerpa nuclear attack submarine, damaged in a fatal accident during tests in November last year, has successfully passed final trials, a Pacific Fleet spokesman said on Monday.

On November 8, 2008, while the Nerpa was undergoing sea trials, its onboard fire suppression system activated, releasing a deadly gas into the sleeping quarters. Three crewmembers and 17 shipyard workers were killed. There were 208 people, 81 of them submariners, onboard the vessel at the time.

Following the repairs, which cost an estimated 1.9 billion rubles ($65 million), the submarine had been cleared for final sea trials.

"A state commission has concluded that judging by the results of all trials the Nerpa nuclear submarine is ready to enter service with the Russian Navy," the source said.
The submarine will be officially commissioned with the Russian Navy later on Monday in the in the town of Bolshoy Kamen in Primorye Territory, home to Amur shipyard's Vostok repair facility which carried out the repairs.

The submarine will be subsequently leased to the Indian Navy under the name INS Chakra. India reportedly paid $650 million for a 10-year lease of the 12,000-ton K-152 Nerpa, an Akula II class nuclear-powered attack submarine.

Akula II class vessels are considered the quietest and deadliest of all Russian nuclear-powered attack submarines. The K-157 Vepr (The first ship of this type) became the first Soviet submarine that was quieter than the latest U.S. attack submarines, which was the Improved Los Angeles class (SSN 751 and later) The K-335 Gepard is the second unit.


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