Arihant-class SSBN - News & Discussions

I think that 83 MW part is a typo. From what I recall of PKS's writings it's 83 MW thermal. In which case a figure of 40 MWe holds good ( I haven't worked out the conversion, lazy that I am) . If anyone in the know can clarify, would appreciate it.

As far as the N warheads resting with DAE/ BARC goes, there must be some truth to it.
Please read the Significance of Arihant by Adm Arun Prakash. He's been quite candid about the heirarchy and responsibilities of the SFC w. r. t the C&C of N weapons.

I believe his argument about the speed at which the SSBN operates, is fallacious. SSBN's are typically not known to operate at high speeds as SSN's as agility and extreme manoeuvres are functions of the latter. That's not part of an SSBN's charter.

I also believe what Swami ( & PKS in his blog) have been arguing was that this patrol wasn't a deterrent patrol in that it didn't carry the full complement of SLBM's mated with the N warheads, which is what it is being advertised as.

Add to the fact that the K-15 which these boats are supposed to carry lacks the requisite range ( about 750 kms. But let's assume it to be twice that figure) to threaten both China and Pakistan too ( to a large extent), which is supposed to be the concept of what deterrence is all about.

That aside, I have often found Swami to be unduly pessimistic, cynical even, ( & our security managers and defence establishment certainly provide him plenty of ammo) about India's security environment and achievements in general. If you've been reading him as long as I have, he comes across as an alarmist, painting the worst case scenario without ever suggesting adequate remedial measures.

We will continue to get conflicting reports for a long time. Gotta wait for official releases.
 
They took the standard 'eating food and converting it into shit' lines of army doing nothing and getting bored (all quiet) on the LC merely observing the LC literally to mean armed forces do nothing, when it is merely to indicate all okay.

Every naval vessel, when putting to sea, is carrying full complement of it's weapons as required of it's role. Same for SSBNs. To think otherwise, is a joke.

K-4 test I can confirm, and like I asked on the other forum, is K-15 still being used?

When it comes to media and nuclear tech, they think they managed to get something, but...

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Lots of inaccuracies in the article. He seems to think we don't have a different nuclear storage policy for the SSBN fleet.

The truth is that India’s nuclear deterrence is completely de-mated with each of its critical components in silos. The launchers are with the Strategic Force Command, the nukes with BARC, and the non-nuclear components with the Defence Research Development Organisation.

True for land and air based Nukes. But not for sea based.

As an aside, China has till date sent only its nuclear-powered general-purpose attack submarines (SSN, Ship Submersible Nuclear), and not its SSBNs (which are armed with SLBMs) into the Western Pacific and Indian Ocean region.
And why should they have SSBNs patrolling the IOR? Armed with 12 JL-2 SLBM with 8000 KM range, why have them pass through the most contested and observed region in the world? Very juvenile article.

PKS's summation of the journey of Project - ATV culminating in the first deterrent patrol of the INS - Arihant


Both of you ought to recall what I had explained 2 years ago & what was subsequently proven last year by anecdotal recollections by former naval & DRDO officials that are still available on YouTube. What I had explained or revealed then was that: 1) Between 1968 & 1998 the IN’s reqmt was only for SSNs. 2) From the late 1970s onwards the IN got interested in SSGNs. 3) The reqmt for SSBNs arose ONLY AFTER May 1998. So, as a result of all these, the IN since 1982 expressed interest in SSGN s that could also act as SSNs. In July of that year the Project 670 SKAT SSGN with R-70 Amethyst ASCMs was offered to India. The then Indian PM Indira Gandhi led a high-level delegation that included Rajiv Gandhi to the USSR & this was an unusually long trip lasting from September 20-26, 1982 during which the delegation visited Moscow, Estonia & Kiev. During this trip the framework agreement was inked for procuring an SSGN on lease, followed by licenced-manufacturing of a newer 6,000-tonne SSGN model, plus procurement of MiG-29B-12, whose existence was first acknowledged by Moscow during a crucial dinner banquet hosted in the Kremlin by Leonid Brezhnev. The USSR then also conducted coastal surveys & recommended that the navigation channel north of Bheemunipatnam in Andhra Pradesh be the site for basing the SSGNs. After the inter-governmental contract for the SSGNs was inked in 1988 as part of the KNPP contract, work began in earnest In India under the ATV Project & Sagarika Project. For the latter, as since acknowledged by Sudhir Mishra (CMD of BrahMos Aerospace) in a DD interview, he was based in Russia from 1993 onwards till the creation of BrahMos Aerospace in February 1998, since the SSGNs were to be armed with BrahMos ASCMs. But after May 1998 when there arose a reqmt for SLBMs, the only available option was to ensure that the VLS cells for BrahMos-1 could also launch SLBMs & hence the K-15 was designed so as to fit into the VLS cell without any complication. Fitment of the follow-on K-4 SLBM therefore became impossible on the S-2 & S-3 SSBNs, but was possible only on the S-4 & that too after significant modifications to the SSGN’s hull design (including a 10-metre plug-in section of the hull) since additional pumps/piping was reqd to ensure safe buoyancy levels after the heavier SLBMs were ejected from the VLS cells. That’s why the S-4 SSBN will take a longer time to build & that’s why (it pays to pay attention to the laws of physics) the S-2 & S-3 SSBNs will never be able to carry K-4 SLBMs. So eventually the S-2 & S-3 boats will be fully armed with BrahMos-1s AFTER the S-4 SSBN becomes available in the following decade. The 6,000km-range SLBMs with MIRVs, however will not be able to go on board the S-4 SSBN & hence the larger 13,700-tonne S-5, S-6 & S-7 SSBNs will be reqd for each hosting 12 such SLBMs. Nor is it true that the IN’s SSBNs will be operationally deployed anywhere in the Bay of Bengal, where there are no deep basins or trenches reqd for SSBNs to lurk within & hence even during the Cold War era not a single SSBN from any navy ever ventured into the Bay of Bengal. The only 2 areas which are the favourite lurking grounds for SSBNs worldwide are the Mariana & Chagos trenches in the Pacific & Indian Ocean areas.

Mostly all accurate but PKS doesn't seem to be aware that much of S4 hull construction including the VLS section were completed few years back, the heart of the unit was however not ready. Is it ready now? No clue. S5 hull fabrication was contracted long before S3 touched water, maybe too much information now. Good Day!
 
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Mostly all accurate but PKS doesn't seem to be aware that much of S4 hull construction including the VLS section were completed few years back, the heart of the unit was however not ready. Is it ready now? No clue. S5 hull fabrication was contracted long before S3 touched water, maybe too much information now. Good Day
Interesting.How many SSBN's & SSN's are we going to have, by say, 2035-40 timelines ?You contend that while we have fabricated the hulls of not only the S-4 & S-4* ( assuming there's an intermediate SSBN before we move on to the definitive SSBN's which will arguably be the mainstay of our N deterrence namely the S-5 series ) but also the S-5 & are awaiting further developments in the N reactor to power the same.

What, in your estimate,will be the capacity ( in MWe) of the S-4, S-4* & the S-5 series? What will be the no of silos they contain? For that matter, is the S-3 identical to the S-2 in terms of the capacity of the N reactor and the silos it contains or is it an enhanced version of the S-2 ( if it is enhanced, could you provide figures for the capacity of its N reactor & the silos) Finally, can't we go in for 2 N reactors of the size -& capacity of the N reactor that powers the S-2?
 
Interesting.How many SSBN's & SSN's are we going to have, by say, 2035-40 timelines ?
SSBN- 12-15 or so.
SSN- 20+

These are pretty conservative estimates particuarly on the SSN side, if the IN really commits then they can start to be churned out like hot cake like the 17As, after 2030 there's no reason why 1-2 SSN can't be put in the water every year. If the IN wants 10+ SSBNs then it will need about 35+ SSNs (just my calculation) as the general rule is that SSBNs have SSN escorts when on deterrence patrol and obviously the IN won't want to devote all of its SSN fleet to just escorting the SSBNs (or aircraft carriers).

Numbers aren't so important at this point but the ancilary infra.

My biggest question on this subject is the C&C, we have a pretty good idea of how the US and even Russian at-sea nuclear forces operate and how they are directed but there's not much clarity on India's approach. I'd assume it's pretty much identical to the US's but then how does the exact line of authorisation take place? This is a very new capability for India, the seniormost military and civilian leadership will have had to been given very comprehensive breifings on this and a number of drills will have had to have been run.

Now I have since mid-2017 noticed what appears to be an India "nucelar football" travelling with the PM but am not sure how much I should read into this.
 
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Now I have since mid-2017 noticed what appears to be an India "nucelar football" travelling with the PM but am not sure how much I should read into this.
Thats actually a Ballistic briefcase. Before only one guy was carrying it, now there are two.

There is another guy carrying a heavy briefcase around but I totally doubt its the football of any sorts. He is too exposed all the time he jumps out of the vehicle before anyone else. Watch at 1:52
 
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I think that 83 MW part is a typo. From what I recall of PKS's writings it's 83 MW thermal. In which case a figure of 40 MWe holds good ( I haven't worked out the conversion, lazy that I am) . If anyone in the know can clarify, would appreciate it.
We cant convert MWt to MWe without knowing what the efficiency(%) is. In simple terms, a more efficient reactor will have a better MWe output. However, the figures quoted in the article could be fictional, no way to confirm its validity.

Interesting.How many SSBN's & SSN's are we going to have, by say, 2035-40 timelines ?You contend that while we have fabricated the hulls of not only the S-4 & S-4* ( assuming there's an intermediate SSBN before we move on to the definitive SSBN's which will arguably be the mainstay of our N deterrence namely the S-5 series ) but also the S-5 & are awaiting further developments in the N reactor to power the same.

What, in your estimate,will be the capacity ( in MWe) of the S-4, S-4* & the S-5 series? What will be the no of silos they contain? For that matter, is the S-3 identical to the S-2 in terms of the capacity of the N reactor and the silos it contains or is it an enhanced version of the S-2 ( if it is enhanced, could you provide figures for the capacity of its N reactor & the silos) Finally, can't we go in for 2 N reactors of the size -& capacity of the N reactor that powers the S-2?

I apologize for the delay. Some of the topics are beyond my knowledge, some better untold. I'll try and answer a few I can.

How many SSBN's & SSN's are we going to have, by say, 2035-40 timelines ?
6 SSN + 2 S2 Class + 2 S4 Class + unknown number of new class/S4 SSBNs as per plans by 2032. (But trust me nothing goes as per plans, more so because we are still experimenting with some of these units)

[/QUOTE]You contend that while we have fabricated the hulls of not only the S-4 & S-4* ( assuming there's an intermediate SSBN before we move on to the definitive SSBN's which will arguably be the mainstay of our N deterrence namely the S-5 series ) but also the S-5 & are awaiting further developments in the N reactor to power the same. What, in your estimate,will be the capacity ( in MWe) of the S-4, S-4* & the S-5 series?[/QUOTE]

Personally, no clue about S4*. This started doing the rounds in media with an assumption that S3 is a bigger boat than S2- Arihant, which to me is wrong. The attached picture from Livefist is the first time I saw S4* being mentioned in the media.
nuclear-submarine-plan.jpg


I haven't mentioned that S5 hull was completed, but that it was contracted a few years back. The trend with the program so far has been that IN insisted on the hulls being fabricated without waiting for the reactor to mature to avoid significant delays.
I'm unable to provide any numbers on the reactor performance, but I can throw some light on the background. S2 and S3 have identical reactors with similar thermal ratings but improvements/refinements had helped improve MWe output for S3. I can't confirm if the same improvements/refinements were then embodied on S2. S4/S5 was destined to receive a bigger reactor and with higher output due to the number of missile silos being doubled to 8, but the status of that development is classified.

What will be the no of silos they contain? For that matter, is the S-3 identical to the S-2 in terms of the capacity of the N reactor and the silos it contains or is it an enhanced version of the S-2 ( if it is enhanced, could you provide figures for the capacity of its N reactor & the silos)

S2/S3 - 4 silos (Same reactor/minor refinements-improved performance/efficiency)
S4/S5 - 8 silos (Could have more units with improvements until development efforts for bigger unit is completed)
SX - 12 silos

Finally, can't we go in for 2 N reactors of the size -& capacity of the N reactor that powers the S-2?
Possible, could even be the adopted technique for the bigger SSBNs with 12 silos, but there is an understanding that S2 reactor could use further improvements in performance. While bigger is better, slow and steady is the way to go. The SSBN project was in full swing even during Congress rule, so this is one of those projects that had received our best efforts. It will just be slower than we'd like, but we will get there.

^ Consider all of this just as personal opinions only, discard at will ;)

Good Day!
 
Thats actually a Ballistic briefcase. Before only one guy was carrying it, now there are two.

There is another guy carrying a heavy briefcase around but I totally doubt its the football of any sorts. He is too exposed all the time he jumps out of the vehicle before anyone else. Watch at 1:52
You don't have to tell me about the collapsed ballistic sheilds!

I do watch these things quite closely and have noticed recently what looks like a portable SATCOM terminal being carried by members of the PM's entourage. Some clarity on this would be helpful from official sources but then there's also not much need to be disclosing all these things right now.
 
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If that image is of Arihant, then my god, BARC has developed one of the slimmest reactor ever built for submarine.

IN should consider 6000 tonnes SSNs rather then going for 10k tonnes, which will be larger and will require more maintenance.
 
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If that image is of Arihant, then my god, BARC has developed one of the slimmest reactor ever built for submarine.

IN should consider 6000 tonnes SSNs rather then going for 10k tonnes, which will be larger and will require more maintenance.
The slimest operationnal one is in the french Rubis class I think. 2700 tons.
 
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New pictures of our nuclear babies..😊😊😊

Note 3 nuclear submarines in a single photo and definitely there could be one more in pen....😉😉
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One of our nuclear baby with operational K4 missile clearly visible...😊😊😊
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Found this from a Chinese source. @safriz @Neo when can we see green painted missiles emerging from sea...😁😁😂