Interesting Facts About Project 638 Varshavyanka Kilo Class Submarine

The Kilo class is the NATO reporting name for a naval diesel-electric attack submarine that is made in Russia. The original version of the vessels were designated Project 877 Paltus (Halibut) in Soviet Union.
There is also a more advanced version, designated as Improved Kilo-class submarine in the West, and Project 636 Varshavyanka in Russia.
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