Design
This project was intentionally forced to be highly innovative, as it was forbidden to reuse the past technical solutions. While enforcing innovation, this also slowed the development.
K-222 was designed as an extremely fast attack submarine, and was the first submarine built with a titanium hull. She was armed with 10 SS-N-7 Starbright (П-70 «Аметист») missiles in individual tubes forward of the sail, between the inner and outer hulls, which were both of titanium alloy. Similar in design to the Charlie class submarine, K-222 was designed to intercept and attack aircraft carrier groups. Like the Charlie class and the later Oscar class submarines, her cruise missiles could only be reloaded in port, making her one of the Soviet Navy's "one shot" boats.
K-222 had two water-water reactors, designed to be as compact as possible. Unusually, there were no diesel generators, using the powerful battery as the emergency power source.
She is regarded as a predecessor to the Alfa and Sierra classes, and may have tested technologies which were later used in those classes.
Read more about this topic: Soviet Submarine K-222
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