Sub - Russisk Kilo Class viser frem propellen sin - Sjeldent syn - Twitter

 

The improved Project 636.3 Kilo-class SSKs (nicknamed “Black Holes” by the U.S. Navy) has primarily been designed for anti-submarine and anti-surface ship warfare. The SSKs are known for their quietness and feature some of Russia’s most advanced submarine technology, as I explained elsewhere:

The Project 636.3 Kilo-class is an improved variant of the original Project 877 Kilo-class design. The updated version is slightly longer in length — the sub’s submerged displacement is around 4,000 tons — and features improved engines, an improved combat system, as well as new noise reduction technology.