Indian nuclear submarines

[janme]

Why the hell would you think it weighs 12k tons? Thats almost the size of vanguard and it carries 16 D-5 each almost 3 times the size of K4

I meant to say it does not have that much displacement and the anchor made a mistake there by stating a displacement of 12k tonnes. I am unable to edit my post now, can't find the edit button

 

[janme]

Ya, then why esteemed paneled guests didn't correct him?

I am not sure, they should have, in some other video they were comparing Astra with Meteor, after that I don't trust Rajya Sabha TV that much.

 

[no smoking]

The Arihant class is an SSBN. I am comparing it's noise level with the Chinese SSBN and not SSN.

1. The Arihant class could hardly be called SSBN.
2. its technology is based on Russian Akula-class submarine.
3. It is hard to believe that Indian ship building industry can match the level of Russian in her first try.

 

[Bhurki]

Not necessarily right.
1. SSN is generally required to hunt the enemy's SSBN within the area well protected by enemy's anti-submarine force.
2. SSBN can sail with very low cruising speed, SSN however has to run at relatively higher speed for hunting.
3. SSBN is generally larger than SSN, which means the engines on SSBN has to produce bigger power than those on SSN. From mechanical point of view, higher power, higher noise.
So, with the same conditions, SSN should be quieter than SSBN.

All 3 of your points are oxymoron to your conclusion in last line..
1) If SSN is supposed to hunt, then it requires to be more manueverable and have extra control surfaces which directly leads to more possibilities of noise .
2) If SSN go faster, how can they be quieter? Cavitation increases with speed
3) SSBN carry comparable thermal capacity reactors ( S8G in ohio and S9G in Virginia) but have larger size to fit them, so they have more space for noise control designes. Also SSBN always have lower power requirements due atleast 10 knots lower speed req.

 

[Indx TechStyle]

The Arihant class could hardly be called SSBN.

It's a nuclear-powered underwater platform able to carry ballistic missile. I don't see any logic why it can't be an SSBN.

 

[Armand2REP]

It's a nuclear-powered underwater platform able to carry ballistic missile. I don't see any logic why it can't be an SSBN.

It meets the basic definition of the word but it is really just a technology demostrator. The real SSBNs are coming later. The best use of it is as an SSN.

 

[Indx TechStyle]

It meets the basic definition of the word but it is really just a technology demostrator. The real SSBNs are coming later. The best use of it is as an SSN.

I don't think its size must be used as the attribute to denounce the role. It has completed deterrence patrol and hereby makes India able to keep ready to fire nukes like P5.

Initial SSBNs were too of similar size. So, there must be no issue. Follow on SSBNs from India too will be bigger.

 

[Armand2REP]

I don't think its size must be used as the attribute to denounce the role. It has completed deterrence petrol and hereby makes India able to keep ready to fire nukes like P5.

Initial SSBNs were too of similar size. So, there must be no issue. Follow on SSBNs from India too will be bigger.

Even the first Polaris boomers contained 16 missiles with 48 warheads with a range of 4,600km. Arihant can only carry 12 warheads with a range of 750km. That is nowhere comparable to even the first generation of boomers. The best use of Arihant is to ditch nuclear weapons and put Brahmos and Nirbhay on it. It makes the perfect SSGN.

 

[no smoking]

All 3 of your points are oxymoron to your conclusion in last line..
1) If SSN is supposed to hunt, then it requires to be more manueverable and have extra control surfaces which directly leads to more possibilities of noise.

That is why I said - "With the same conditions". When we compare 2 different things, we have to put them in the same circumstance. Otherwise, it is meaningless.

2) If SSN go faster, how can they be quieter? Cavitation increases with speed.

Yes, but SSN can go slower too. And oppose to what you believe, in most of time, SSN is sail at the same speed as the enemy's SSBN. The only time they need high speed and manueverability is they are escaping from the anti-submarine force or fighting against enemy's SSN.

3) SSBN carry comparable thermal capacity reactors ( S8G in ohio and S9G in Virginia) but have larger size to fit them, so they have more space for noise control designes. Also SSBN always have lower power requirements due atleast 10 knots lower speed req.

Well, you forget one thing: SSBN need to carry at least 12 huge ballistic missile tubes.

 

[Assassin 2.0]

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[kurup]

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What is this thing ??

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[WolfPack86]

India set to lease third Akula-class nuclear attack submarine from Russia
India and Russia have begun discussions for the lease of a third Akula-class nuclear-powered attack submarine. Discussions are at a very preliminary stage but India is aware of the “submarine gap” in the 2020s, particularly in the later years. One possibility is to lease another Akula-class submarine from Russia.

India already has one nuclear-powered submarine, the Chakra, leased from Russia. It came in 2012. India is also expected to lease a second submarine of the Akula-class but an official announcement has not been made yet. Highly-placed sources confirmed that discussions have begun for a third, keeping in mind the projected shortage of submarines. By the late 2020s, the nine Russian-built Sindhughosh class submarines would be about 40 years old and on their last legs, despite their refit, happening now. That would only leave the four HDW Germany-designed submarines, which are just as old and hopefully, the six Scorpene submarines — and most of them are yet to join service.

The six Scorpenes apart, there would be two Akula-class nuclear powered-submarines (though one could go back) and perhaps, two nuclear-powered submarines of the Arihant class. The latter has a totally different purpose. A total of 14 submarines in the late 2020s would be fewer than what the Indian Navy has now and the gap, considering the growing strength of the Chinese People’s Liberation Army Navy and its likely presence in the Indian Ocean by then, would be worrying.


One problem will be the budget. Navy Chief Admiral Karambir Singh has already spoken of the Navy’s share of the budget coming down.

The discussions for a third submarine, are dependent on several issues: what India can produce in its own shipyards; whether the six Scorpenes are ready by then; and whether the long-awaited decision for a second line (perhaps, through a strategic partnership) is taken and the work takes off.

The first nuclear-powered submarine leased from Moscow was in 1987. It was called the Chakra and was returned a few years later. Nuclear-powered submarines, keeping in mind international laws, are leased, not purchased. More recently, in April 2012, an Akula-class submarine was inducted into the Indian Navy. All nuclear-powered submarines from Russia are on lease.
https://www.defencenews.in/article/...s-nuclear-attack-submarine-from-Russia-798373

 

[Assassin 2.0]

Jai ho

Arihant the enemy slayer.

 

[Aniruddha Mulay]

SBC, Vizag.
Left image is from November last year.
The Right image is only 2-3 months old.
Any thoughts??
Because both don't look similar to me.

 

[Anikastha]

View attachment 40837 SBC, Vizag.
Left image is from November last year.
The Right image is only 2-3 months old.
Any thoughts??
Because both don't look similar to me.

right pic subs conning tower looks bit slim...cant get clearly due to objects on sub...

 

[Aniruddha Mulay]

right pic subs conning tower looks bit slim...cant get clearly due to objects on sub...

Also, the Chakra's conning tower is in the middle, whereas this new sub's conning tower seems to way up front.

 

[Anikastha]

Also, the Chakra's conning tower is in the middle, whereas this new sub's conning tower seems to way up front.

check d body....its slim too...
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[Aniruddha Mulay]

Here a wider view of the same.

 

[Anikastha]

remember thats same bay area where conventional subs go for refitting so letsnot freak out

 

[Arihant Roy]

View attachment 40837 SBC, Vizag.
Left image is from November last year.
The Right image is only 2-3 months old.
Any thoughts??
Because both don't look similar to me.

The sub in the image from November is INS Chakra. Akula 2.hence the streamlined sail. The one in the recent image is an Arihant class sub. Most likely INS Arighat .