India’s ₹70,000 crore Project-75(I) submarine programme advances for indigenous construction of six next-generation submarines

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Picture this.

Six stealth submarines.

Silent. Lethal. Built right here in India.

💸 Price tag: ₹70,000 crore.

It's one of the largest defence deals this country has ever stitched together.

And it just moved from "someday" to "happening."


🌊 The backstory nobody's talking about

The Indo-Pacific is heating up.

Chinese subs are showing up in waters India considers home turf.

Pakistan is buying Chinese submarines too.

India's response? Project-75(I).

Six next-gen diesel-electric submarines with Air Independent Propulsion — meaning they can stay underwater for weeks without surfacing.

Silent killers, basically.


⚓ The kingmaker: Mazagon Dock

The Finance Ministry cleared the deal in May.

Mazagon Dock partnered with Germany's ThyssenKrupp Marine Systems to build them.

First submarine delivery: ~7 years from contract signing.

The numbers tell the story:

  • 🏭 Market cap: ₹99,372 crore
  • 📈 Q4 FY26 net profit jumped 34% YoY to ₹674 crore
  • 🔻 Stock trading at a 26.6% discount from its 52-week high
  • 🇮🇳 India's only shipyard that's ever built a conventional submarine end-to-end

This one contract could fill their order book well into the 2030s.


🔧 The silent partner: L&T

Mazagon builds the subs.

But L&T builds the guts inside them.

  • Pressure hulls
  • Launch systems
  • Propulsion equipment
  • Mission-critical bits for India's nuclear submarines too

Only a handful of companies on Earth can do this work.

L&T is one of them.

Market cap: ₹5.78 lakh crore. Trading just 5% below its 52-week high.

The market already knows.


🧠 The brain: Bharat Electronics

Here's the part most people miss.

Modern submarines aren't really machines anymore.

They're floating supercomputers wrapped in steel.

Sonar. Combat management. Electronic warfare. Underwater sensors.

All of it comes from BEL — India's biggest defence electronics player.

  • 💼 Market cap: ₹2.97 lakh crore
  • 📊 P/E of 49 vs industry's 61.5
  • 🚀 Already pivoting into AI, drones, cybersecurity

⚡ The bigger picture

This isn't just a defence deal.

It's a bet on India.

A bet that the next decade of naval power gets built in Mumbai, not Munich.

A bet that "Make in India" finally graduates from slogan to submarine.

Three companies. One mega-contract.

And a quiet revolution unfolding under the waves.

The headlines will fade.

The order books won't.

That's all for now!