How India's New Stealth Submarines Will Outmatch Pakistan's Chinese Design: Indian Defence Update

Añadido: 2026-05-07

[00:00:00]Right now, somewhere in the Arabian Sea, a submarine is sitting completely still.

[00:00:05]No engine noise, no radar signature, no radio transmission, >> [music] >> nothing. It has been there for 11 days straight, and the Navy that sent it there already knows, with satellite precision, exactly where three of Pakistan's submarines currently are.

[00:00:22]This isn't a future scenario. This isn't a war game simulation. This is the present state of South Asian naval power. And by the time this video ends, you're going to understand why the underwater balance between India and Pakistan has already shifted permanently, [music] and why no amount of Chinese military hardware can reverse it. We're going to break this down step by step. The technology, the weapons, the intelligence networks, and the brutal strategic reality that Pakistani defense planners are staring at right now, but almost nobody in mainstream media is willing to say out loud. Let's go. But before we dive in, if you're new here, hit the subscribe button and leave a comment, I subscribe, and I'll personally welcome you into the family.

[00:01:08]With that said, [music] let's get started. Section one, why submarines decide wars before they start. Before we talk about hardware, we need to talk about how modern naval wars are actually won, because most people get this completely wrong. They think about aircraft carriers, fighter jets, missiles flying through the air in dramatic arcs. That's the visible war, the war that [music] gets filmed and broadcast. The invisible war, the one that decides the outcome before the first public shot is fired, happens underwater. Here is the strategic principle every major naval power operates by, control the subsurface and you control the entire maritime domain.

[00:01:51]But because a submarine you cannot find is a submarine that can do anything it wants. It can track enemy ships and report their movements. It can position itself for a strike and wait for days, for weeks, for the exact right moment.

[00:02:06]It can cut undersea communication cables. It can launch missiles at land targets from waters an enemy assumed were safe, and it can disappear before anyone even confirms a launch point.

[00:02:17]>> [music] >> 70% of modern naval conflict outcomes are effectively decided in what strategists call the shaping phase, before weapons are fired at all. That phase is dominated entirely by submarines. Now here is why that principle matters specifically for India and Pakistan right now. Pakistan currently operates five Agosta 90B submarines. [music] French designed originally, but heavily retrofitted with Chinese systems under a $350 million upgrade contract signed in 2015.

[00:02:50]For several years, that fleet represented a credible deterrent, [music] a genuine capability Pakistan could project into the Arabian Sea. That credibility is now eroding, faster than most people realize, and the reason comes down to one word, silence. [music] Section two, the noise problem China cannot solve. The submarine's most important characteristic, more important than its weapons, more important than its speed, more important than how deep it can dive, >> [music] >> is how quiet it is, because a submarine that makes noise can be found, >> [music] >> and a submarine that can be found is no longer a deterrent. It's a target.

[00:03:29]Here's the problem with Chinese acoustic suppression technology, and this isn't an Indian assessment. This is from RAND Corporation's 2023 evaluation of Chinese naval exports. Chinese acoustic suppression technology currently lags behind Western and advanced Indian equivalent systems by approximately 15 to 20 years. Think about what that means for Pakistan's upgraded Agosta fleet.

[00:03:53]>> [music] >> The Chinese systems installed during that $350 million upgrade, the pump jet systems, the vibration dampening, the acoustic tiles, are all built on a technology baseline that India's detection infrastructure has already been specifically engineered to defeat.

[00:04:10]I spoke to people familiar with the assessments of retired Indian Navy sonar operators, men who spent careers with headphones on listening to the ocean.

[00:04:19]And the consistent message was this, Chinese boats have a signature. It's not obvious to an untrained ear, but to modern AI-assisted sonar systems, the kind India [music] has been deploying since 2019, those submarines announce themselves. And there's a mechanical reality compounding this problem that no upgrade contract can fix. Pakistan's Agosta submarines run on conventional diesel-electric [music] propulsion. A diesel engine requires air, which means, no matter how sophisticated the rest of the boat is, every 48 to 72 hours, that submarine must approach the surface a snorkel to recharge its batteries. That snorkel event creates acoustic signature.

[00:05:02]>> [music] >> It creates brief radar exposure. It creates a thermal trail. In modern anti-submarine warfare terminology, that event is called a detection opportunity.

[00:05:13]Every two to three days, Pakistan's submarines hand India a detection opportunity. India's answer to that problem is Project 75 India, and it eliminates detection opportunities almost entirely. Section three, Project 75 India, building the invisible fleet.

[00:05:32]Project 75 India is a 43,000 Indian rupees core program, roughly $5.2 [music] billion US dollars, to design, build, and deploy six next generation conventional submarines for the Indian Navy.

[00:05:46]>> [music] >> But the number that matters, the one that changes the entire strategic equation, is this, 21 days. That is how long an AIP-equipped submarine can remain completely submerged, completely [music] silent, without surfacing, without snorkeling, without creating a single detectable event.

[00:06:05]>> [music] >> AIP stands for air-independent propulsion, and if you want to understand why it matters, here is the explanation that makes it impossible to miss. Conventional submarines burn diesel. Diesel needs oxygen. Oxygen means surfacing. AIP submarines, using hydrogen-oxygen fuel cell technology, generate electricity through a chemical reaction that produces zero combustion, zero exhaust, and near zero acoustic signature. The submarine breathes without coming up for air. According to analysis cross-referenced between Indian Defense Review and Jane's Defence Weekly in 2022, India's AIP-equipped submarines will have an underwater endurance approximately 400% greater than Pakistan's current Agosta fleet. 400%.

[00:06:53]Pakistan's submarine must reveal itself every 48 to 72 hours. India's submarine can sit motionless, undetected, fully operational, outside Karachi Harbor for 3 weeks without once breaking the surface. In a conflict scenario, that is not a tactical advantage. That is a different category of capability entirely. Now here is where the collaboration structure of Project 75 India makes it even more significant.

[00:07:22]India is building these submarines domestically under the Make in India defense program, >> [music] >> in partnership with French naval engineering firm Naval Group, the same company that designs submarines for the French Navy, the same company whose technology forms the baseline for some of the quietest conventional submarines on Earth. Every component, [music] every spare part, every software system, built, maintained, and upgraded inside India's own borders. We'll come back to why that supply chain independence matters enormously, because when we look at what China sold Pakistan, the dependency problem becomes the most dangerous issue of all. But first, we need to talk about what India is putting inside these submarines, because the weapons loadout is where this story moves from concerning to genuinely alarming. Section four, BrahMos, the weapon with no answer. Pause. If you follow Indian defense at all, you know the name. But the next generation variant, [music] BrahMos-NG, next generation, configured for submarine launch, represents a capability that Pakistan's current defense architecture has no verified answer for. And I'm not going [music] to ask you to take India's word for that. I'm going to give you the physics and let the numbers speak.

[00:08:39]BrahMos-NG travels at Mach 3.5, [music] three and a half times the speed of sound. Expected strike range in submarine launch configuration exceeding 800 km. Open a map right now. Place a point 200 km off the Pakistani coastline, comfortably within international waters, where no one can legally challenge a submarine's presence. Draw an 800 km radius from that point. Islamabad sits inside that circle. Lahore sits inside that circle.

[00:09:11]>> [music] >> Every major Pakistani Air Force base, every naval installation, every command and control facility that Pakistan's defense structure depends on. And from launch to impact, less than 7 minutes.

[00:09:25]Now here's the piece that the Stockholm International Peace Research Institute flagged in their 2023 yearbook, and this is the detail that matters most.

[00:09:34]Pakistan's primary air defense systems are Chinese supplied. The HQ-9 and the L-80, both competent, modern platforms, both designed to intercept incoming aerial threats, both optimized for targets traveling at approximately Mach 2.5 or below.

[00:09:52]>> [music] >> BrahMos-NG travels at Mach 3.5.

[00:09:56]That gap, one full Mach number, >> [music] >> is not a marginal performance difference. At hypersonic velocities, an additional Mach unit represents an entirely [music] different intercept problem. The engagement geometry, the reaction time, the radar track requirement, everything changes beyond Mach 3.

[00:10:15]>> [music] >> Pakistan's Chinese-supplied air defense systems are not currently engineered to solve that problem. A Pakistani defense analyst, quoted anonymously in Dawn newspaper's 2024 security supplement, said this directly, "We've war-gamed this scenario.

[00:10:31]>> [music] >> The honest answer is we don't currently have a clean intercept solution for a hypersonic sea-launch strike."

[00:10:38]Read that sentence again. A Pakistani analyst, in a Pakistani newspaper, acknowledging publicly, carefully, anonymously, but publicly, that there is a gap in Pakistan's defenses that currently has no solution. And that weapon will be launched from a submarine Pakistan cannot find, >> [music] >> from waters Pakistan cannot control, at targets Pakistan cannot protect with its existing air defense network. That is the architecture India is building.

[00:11:07]Silent, patient, already in the water.

[00:11:11]Section five, why China's help is Pakistan's biggest vulnerability. Now, let's talk about the $5 deal, because this is the part of the story that almost never gets the attention it deserves. Pakistan and China formalized an agreement for eight Yuan class submarines, the Type 039B, the largest submarine export deal in Chinese naval history. On paper, it reads like a massive strategic upgrade.

[00:11:37]In practice, it contains structural vulnerabilities that only become visible under real operational pressure. Start with the technology baseline.

[00:11:46]>> [music] >> In 2023, the US Naval Institute published a proceedings paper assessing [music] Chinese AIP technology, the same AIP technology going into Pakistan's new Yuan class boats.

[00:11:58]>> [music] >> Their conclusion, Chinese AIP systems are broadly comparable to 2005-era German HDW designs. German HDW submarines from 2005.

[00:12:10]That is the generation India has spent the last decade specifically engineering its detection infrastructure to find and its weapon systems to defeat. Pakistan is paying $5 for a submarine generation that India has already solved. But the technology gap is not even the most dangerous part. The most dangerous part is dependency. Chinese submarines run on Chinese software, >> [music] >> Chinese fire control architecture, Chinese sensor integration, Chinese propulsion components sourced entirely from Chinese manufacturing chains. In peacetime, [music] that means Pakistani engineers train in China, spare parts ship on Chinese logistic schedules, software updates arrive when Beijing decides to release them.

[00:12:57]>> [music] >> In wartime, in an actual active conflict in the Arabian Sea, that supply chain becomes a strategic weapon pointed at Pakistan. China cannot fly spare parts through a contested airspace. China cannot resupply submarine components through waters where Indian naval assets are operating. The moment hostilities escalate past a certain threshold, Pakistan's most expensive [music] and sophisticated military assets begin to degrade. Not because of enemy action, because the infrastructure that keeps them functional is 10,000 km away and inaccessible. India's Project 75 India submarines have none of that problem.

[00:13:38]French collaboration means technology transfer agreements, not [music] dependency agreements. Domestic manufacturing means Indian engineers, Indian supply chains, Indian maintenance infrastructure. In a sustained conflict, India's submarines improve their operational tempo. Pakistan's degrade.

[00:13:57]And then there is the intelligence dimension, the one that makes everything else secondary, because India doesn't just have better submarines. India already knows where Pakistan submarines are. Section six, the invisible fence and the real target. During the Cold War, the United States built SOSUS, the sound surveillance system, a classified network of hydrophones on the ocean floor, spanning the North Atlantic, tracking Soviet submarines continuously and invisibly. The Soviets didn't know it existed for years. When they eventually did, American submariners had already been reading their patrol routes like a public schedule. India is building the South Asian equivalent, quietly, systematically, and with direct American technical support. Under the BECA agreement signed in 2020, India and the United States share real-time undersea tracking data with US Indo-Pacific Command. India's fleet of 12 P-8 Poseidon maritime patrol aircraft, the same submarine-hunting platform the US Navy deploys globally, feeds continuous data into that network.

[00:15:06]The Observer Research Foundation published analysis in 2024 estimating that India's maritime domain awareness in the northern Indian Ocean has improved by 60% since 2020. What that means practically, before India's submarines leave harbor, Indian naval intelligence already has a probabilistic positional map of every Pakistani submarine in the Arabian Sea. Pakistan is playing hide and seek in a room where the other side has thermal goggles. And here is the final layer, the one that reframes this entire story. India's primary concern was never actually Pakistan.

[00:15:42]>> [music] >> China's People's Liberation Army Navy operates 79 submarines as of 2024, including nuclear-armed ballistic missile submarines capable of striking any city on Earth. Chinese submarine patrols in the Indian Ocean increased by 300% between 2014 and 2023, according to the International Institute for Strategic Studies in London. Everything India is building to neutralize Pakistan's submarine threat is simultaneously a rehearsal, in doctrine, in technology, in operational tempo, for a far larger strategic competition with China in the deep Indian Ocean. [music] Defeat Pakistan's undersea capability quickly and efficiently. Free India's full naval attention for the eastern theater. That is the strategy, and it is working. For the first time, analysts at Janes, at IISS London, at USNI, not Indian publications, not government spokespeople, are describing India's emerging submarine capability as genuinely world-class. That phrase belongs to a very small club. America, Russia, France, Britain, and now, credibly, India. Pakistan, equipped with Chinese technology benchmarked to 2005 standards, is watching that club form.

[00:17:00]>> [music] >> And the window to respond is closing faster than the headlines suggest.

[00:17:05]India's first Project 75 India submarine is expected operational before 2030. The full fleet of six before 2035. By that point, the underwater gap between what India can do and what Pakistan can counter will not be a gap. It will be a canyon. The underwater arms race in South Asia is not coming. It is already here. It is already being won. Now, here is what I want you to answer in the comments, and think about this carefully before you type. Pakistan has invested billions in Chinese submarine technology that independent western analysts say is already a generation behind. China is Pakistan's most important strategic partner, but in this specific domain, beneath the surface of the Arabian Sea, >> [music] >> China may be Pakistan's most consequential military liability. So, the question is this, >> [music] >> does Pakistan double down on Beijing and hope the technology catches up, or is there a realistic path where Islamabad quietly looks for a different solution?

[00:18:06]And if so, [music] what does that even look like? If you work in defense, geopolitics, or South Asian security, drop your read below.

[00:18:15]And if this gave you one thing you didn't know before you clicked, share it with someone who follows this region.