Table of Contents
About S4 Submarine
- It features 75% indigenous content and is equipped with 3,500 km range K-4 nuclear ballistic missiles.
- It is larger and more capable than the INS Arihant (S2), India’s first SSBN.
- India’s SSBN (Sub-Surface Ballistic Nuclear) fleet consists of:
- INS Arihant (S2): First SSBN, armed with 750 km range K-15 nuclear missiles.
- INS Arighaat (S3): Commissioned in 2024.
- INS Aridhaman (S4): To be commissioned in 2025.
Difference between Nuclear Powered and Traditional Submarines
| Feature | Nuclear Powered Submarine | Traditional Submarine |
| Power Source | Nuclear reactors provide virtually unlimited power for propulsion and systems. | Diesel engines require regular surfacing to recharge batteries. |
| Operational Range | Can operate submerged for months or even years, limited only by food supplies and crew endurance. | Limited operational range; requires surfacing every few days for recharging. |
| Speed | Generally faster, capable of high-speed manoeuvres underwater. | Slower compared to nuclear submarines due to battery limitations. |
| Stealth | Extremely stealthy; can remain submerged indefinitely, making detection difficult. | Less stealthy; noise from diesel engines can be detected more easily. |
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