Sindhughosh
India1986 - Present
The Sindhughosh class (Russian Kilo-class) forms the backbone of India's submarine fleet. Known as "Black Holes" by NATO for their quiet operation, these diesel-electric submarines have served India for nearly four decades.
Primary Specifications
Displacement
3076 ton
Soviet-designed Kilo class
Length
72 m
Traditional diesel-electric hull
Max Depth
300 m
Proven operational depth
Armament (Primary)
Klub Missiles / Torpedoes
Klub missile system equipped
Crew
52
Standard Kilo class crew
Quick Summary
What it is?
A diesel-electric attack submarine for conventional warfare
Who uses it?
Indian Navy 11th and 12th Submarine Squadrons
Role
Anti-submarine and anti-surface warfare in littoral waters
What's different?
NATO nickname "Black Hole" for exceptionally quiet operation - upgraded with Klub cruise missiles for 220+ km land-attack capability
Why it matters?
Has formed the core of India's submarine deterrent for decades, now being progressively upgraded with modern weapons.
Real-World Impact
1
Silent Hunter
Extremely quiet diesel-electric propulsion earned "Black Hole" nickname from NATO
2
Cruise Missile Strike
Klub missiles provide 220+ km strike range against ships and land targets
3
Combat Proven
In 2015 exercises, INS Sindhudhvaj tracked and "killed" USS City of Corpus Christi undetected
4
Regional Presence
Maintains India's underwater presence across Arabian Sea and Bay of Bengal
Additional Features
Propulsion Type
Diesel-Electric
Stealth Features
Anechoic tiles
Special Capabilities
Refitted for Klub Land Attack missiles
FAQs
1. What does 'Sindhughosh' mean?
Sindhughosh means 'Roar of the Sea' in Sanskrit. All submarines in the class have names beginning with 'Sindhu' (Ocean).2. How many are operational?
3. What is the 'Black Hole' nickname?
4. What upgrades have they received?
5. How deep can it dive?
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