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How to Sink a $3 Billion Dollar Nuclear Submarine: Leave a Hatch Open - an INS Arihant Story

India has developed and tested the K-4 missiles from the same family which has a range of 3500 kilometers. Both K-4 and K-15 have been designed to be operated from Arihant class of submarines



As a countermeasure against ballistic missile defence systems, the K4 can perform three-dimensional maneuvers
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I came across this interesting article published by MSN, written by Story by Peter Suciu, on Wednesday, Jan 25th, 2023, detailing how an advanced submarine almost sank by the poorly trained Indian Navy Sailors. And how the Indian Navy tried to conceal this incident at the time when it was needed the most, during the tensions between China and India, in 2017.

A Hatch Left Open
Perhaps the most embarrassing mishap in military maritime history is what happened to INS Arihant, India's first nuclear-powered ballistic missile submarine when it began its deployment in 2017.

The then-brand new $2.9 billion submarine was left completely inoperative for nearly a year simply because a hatch was left open, which allowed seawater to rush in, almost sinking the boat in the process.

The nuclear submarine was the first of an expected five in class, designed and constructed as part of the Indian Navy's Advanced Technology Vessel project. The Arihant was designed with four launch tubes that could carry a dozen K-15 short-range missiles or K-4 intermediate-range nuclear missiles. While the sub's weapons and capabilities were advanced, the training of the crew certainly wasn't.

In addition, the Arihant faced a number of problems during her development and manufacture, and that included delays in its construction and notably major differences between the Russian-supplied design and the indigenous fabrication. Those were all minor of course compared to the damage that occurred from human error.

When the hatch was left open, not only did the propulsion compartments fill with seawater, but there was substantial damage to the pipes that ran through the submarine. Given how corrosive seawater can be to the various pipes, including those that carry pressurized water coolant to and from the ship's eighty-three-megawatt nuclear reactor, all had to be cut out and replaced. The six-thousand-ton INS Arihant remained out of service at the docks while the water was pumped out, and the pipes replaced. The entire process took ten months.

India had attempted to conceal the mishap, without much success. INS Arihant's absence was first noted in the Doklam border standoff with China in the summer of 2017. At the time, the Indian military only confirmed that the submarine had undergone repairs in early 2018. As naval mishaps go the Arihant may have been among the more embarrassing but at least it didn't result in the loss of life.

Despite a rough start, the submarine has reportedly had a largely successful service history.


Have you ever understood one thing?
PN never had a nuclear submarine incident, Why - because they never operated and hence have no experience on it. NO chance for incident

If you look around all the navy that operates nuclear submarine, They made mistakes and learn it while operating... You will rarely find any navy which not made the mistake.
 
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People who believe that putting cow dung on houses and on one’s bodies will protect against a nuclear attack will believe everything. Yes there was a aft hatch and it was left open. Says a lot about the Arihants design and competence of it’s users.

yeah but your people believe vaccines developed by CCP will protect them from Coronavirus....that's much worse.....
 
Have you ever understood one thing?
PN never had a nuclear submarine incident, Why - because they never operated and hence have no experience on it. NO chance for incident

If you look around all the navy that operates nuclear submarine, They made mistakes and learn it while operating... You will rarely find any navy which not made the mistake.
Technically the IN had accidents well beyond the Arihant which were related to gross human error. Be it the Sindhurakshak or Sindhuratna there have been serious safety lapses and these have been recognized by CAG reports.
 
a country which successfully sank its $ 300 Billion economy is lecturing Indian's about "How to Sink a $3 Billion Dollar Nuclear Submarine" :rofl:
No one is lecturing India. In fact its India teaching the world how to easily do it.
 
My car tells me when the door is open. Is there no alarm ti tell you the hatch is open on a nuclear sub?
 
Man everyone on this thread is a nutcase and live in their fantasy of thinking India's and Hindoos are Stoopid. You guys will neglect cold hard proof just to live in that fantasy

https://www.thehindu.com/news/natio...er-accident-10-months-ago/article22392049.ece here is the main article you are using to make these absurd claims and here are some facts proving how wrong this article is.

The article reported that India’s only operational nuclear ballistic missile submarine, was out of action for about 10 months last year due to an accident, the news item stated that the Arihant’s propulsion compartment was damaged after water entered it, as a hatch on the rear side was left open by mistake.

The submarine has no hatches there (in the propulsion system). The Arihant is based on Russian double hull design with a sealed nuclear reactor section. Except for the latest French nuclear submarines that have a hatch above the reactor for quicker refuelling, no other country with nuclear submarines have such a system.
From https://www.naval-technology.com/projects/arihant-class/

Arihant’s design is based on the Russian Akula-1 Class submarine. It weighs 6,000t. At a length of 110m and breadth of 11m, Arihant is the longest in the Indian Navy’s fleet of submarines and can accommodate a crew of 95. It can reach a speed of 12kt-15kt on surface and up to 24kt when submerged.

From https://www.naval-technology.com/projects/akula/

Akula submarine design
The submarine has a double-hulled configuration with a distinctive high aft fin. The hull has seven compartments and the stand-off distance between the outer and inner hulls is considerable, reducing the possible inner hull damage.

Although the Arihant’s core is not designed to operate for the submarine’s lifetime and will need refuelling, it does not have a hatch. To refuel, the hull will have to be cut open and welded back, as is the case for the Russian nuclear attack submarine, the Akula-II class that India has leased and operates as INS Chakra.

There are no external hatches in the compartment that houses the steam turbine, gearbox, generator and shaft that drives the propeller. Under normal circumstances, it is not possible for sea water to enter the submarine, and certainly not via a ‘non-existent hatch’. It also not possible for a modern submarine that has various sensors to not have a warning system about an open hatch in any other area of the submarine critical for its survival.

the news report also says that the absence of Arihant from operations came to the political leadership’s attention during the India-China military standoff at Dokalam when India allegedly wanted to deploy it.

This is unlikely as this would mean an across-the-board failure of intelligence and all the checks and balances in place. It also means the armed forces not keeping the civilian leadership in the loop, which is against the former’s operating procedures and is extremely unlikely given that the sub was to used by India's strategic forces command which is chaired by prime minister himself and comprises of people like IB chief, National Security Advisor.
 

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