Project Kalina: Russia’s Fifth-Generation Diesel-Electric Submarine

© Sputnik / Alexei Danichev / Go to the photo bankRehearsal for military parade marking Navy Day, St. Petersburg
Rehearsal for military parade marking Navy Day, St. Petersburg - Sputnik International
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Russia is set to start construction of its new fifth-generation Kalina-class diesel-electric submarine in the “imminent future,” earlier than previously announced, according to Navy Deputy Commander-in-Chief Vice-Admiral Alexander Fedotenkov; here is what the new project is all about.

One of Russia's largest Soviet-built nuclear submarines, Typhoon (Akula) class, which remains the world's largest with the displacement of about 25,000 metric tons (27,500 tons) heaves ahead in the Barents Sea at Russia's Arctic Coast in this September 2001 photo - Sputnik International
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The construction of new fifth-generation non-nuclear submarines dubbed Project Kalina, equipped with air-independent propulsion systems, will apparently begin earlier than planned, in the “imminent future.”

The Central Construction Bureau of Maritime Technology (TsKB) ‘Rubin’ that was commissioned by the Defense Ministry, has developed a draft new non-nuclear submarine, Alexander Fedotenkov said in an interview with the Strategy program on Rossiya 24 news channel on Friday.

“These are new-generation submarines. They are currently being developed,” Fedotenkov said. “The construction of these submarines will start in the imminent future.”

Earlier reports suggested that the construction would only start after 2020.

The new submarine will combine the best characteristics of Project 636 (Varshavyanka) and Project 677 (Lada) submarines  and is set to be equipped with an air independent propulsion (AIP) system.

Russia will start building new fifth-generation Kalina submarines after 2020, according to a Navy source. The submarines will have advantages over diesel-electric and nuclear submarines - Sputnik International
Russia to Begin Constructing New Kalina-Class Submarines After 2020
The system offers significant advantages over diesel-electric submarines, which need to surface regularly to recharge batteries, and nuclear submarines, which must constantly run noisy pumps to cool their reactors.

Submarines with such systems can stay submerged for weeks at a time and are potentially stealthier, the system is already in operation with a number of navies around the world.

According to some estimates, with the new AIP system installed, the Kalina  would be able to stay underwater for about twenty-five days.

Earlier reports suggested that Russia’s Rubin Design Bureau expected the Kalina design to be completed by 2017 and the first Kalina to be fitted with AIP by 2018.

New AIP system could be initially tested on the operational Lada-class diesel-electric submarine in service with the Russian Navy, the Sankt Peterburg (St. Petersburg).

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Meanwhile, the two last Lada-class Project 677 submarines will be delivered as scheduled — in 2018 and 2019. Afterwards Moscow will terminate the Project 677 Lada-class in favor of Project Kalina.

The Lada-class, or Project 677, is a fourth-generation diesel-electric submarine based on the older Kilo-class submarine and does not currently incorporate an AIP.

China has been negotiating with Russia to purchase four Lada-class submarines from the Rubin Design Bureau based in St Petersburg. Beijing hoped those submarines could be refitted with Chinese engines and an electronic fire-control system.

Reports suggest that variants of the fifth-generation submarines may also be sold to India and China.

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