S4-Class Derivative SSGN Submarine Development
Sector: Government • Location: India
Source: Defence.in
India is considering modifying the existing S4-class nuclear-powered ballistic missile submarine (SSBN) platform to develop nuclear-powered guided-missile submarines (SSGNs). This adaptation aims to provide a powerful, long-range strike capability using conventional submarine-launched cruise missiles, addressing a shortfall in underwater offensive capabilities while awaiting the Project-77 attack
- Status
- Prospective
- Sector
- Government, Aerospace & Defense, Nuclear, Commercial
- Location
- India
- Updated
- 22 Jul 2026
- Source
- Defence.in
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Project Information
Participants
| Not available for this record. |
Status
Original status | planned |
Taiyo status | Prospective |
Taiyo last update | 2026-07-22 |
Contact
| Not available for this record. |
Description
Description | India is considering modifying the existing S4-class nuclear-powered ballistic missile submarine (SSBN) platform to develop nuclear-powered guided-missile submarines (SSGNs). This adaptation aims to provide a powerful, long-range strike capability using conventional submarine-launched cruise missiles, addressing a shortfall in underwater offensive capabilities while awaiting the Project-77 attack submarines. The modification involves converting missile silos to carry multiple smaller cruise missiles, enabling a single submarine to carry 24 to 32 precision-guided weapons. |
Original sector | Defence |
Location
Country | India |
Source
Source | Defence.in |
URL |
More Details
Record type | Project |
Sector | Government, Aerospace & Defense, Nuclear, Commercial |
Article published date | 2026-04-10 |
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