Indian Navy Submarines Explained | Science and Technology for UPSC | Drishti IAS

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Mr. Ratnkalash Dixit, Expert Faculty at Drishti IAS, explains submarine technology in a simple and conceptual manner in this session. The video covers how submarines work, including diesel-electric submarines, snorkelling technology, Air Independent Propulsion (AIP) submarines, and nuclear submarines. It also explains buoyancy principles, battery charging mechanisms, and how submarines remain underwater for long durations. In addition, the session discusses SONAR and RADAR, including the difference between active and passive sonar systems. Major Indian submarine projects such as Project 877 (Kilo Class) and Project 75 (Kalvari Class) are also explained. This session is highly useful for UPSC and other competitive exam aspirants preparing topics related to defence technology and internal security.


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