Arihant-class SSBN - News & Discussions

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Don't know if this was already posted. I'll post this anyway:
GUqSVWaaMAAxguN.jpeg

Sub shown here is likely INS Arihant. The amount of barnacle growth on the sub's body is a great sign. Submarines get this kind of barnacle growth when they spend many months underwater at great depths moving very slowly or not moving at all.
 
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Gautam said:
Don't know if this was already posted. I'll post this anyway:
View attachment 35260
Sub shown here is likely INS Arihant. The amount of barnacle growth on the sub's body is a great sign. Submarines get this kind of barnacle growth when they spend many months underwater at great depths moving very slowly or not moving at all.
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Newbie question. Can double hulled N-boats lay still on the seabed?
 
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Speedster1 said:
I'm guessing doubled boats can dive 2x deeper
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Nope. There are always weak spots on the hull that will cave in at around 500 m. This would be true if one could make subs with no hull penetration. As in no conning tower, mast, escape hatches, hermetically sealed entry hatches etc.
Speedster1 said:
Maybe they can bottom in shallower waters but not in the deep.
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True. But if the water is deep enough the submarine only needs to get below the thermocline layer.
 
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Speedster1 said:
New boomer on the way!

timesofindia.indiatimes.com

India Commissions INS Arighat: Second Nuclear Submarine Armed with Nuclear Missiles | India News - Times of India

India News: India is fully prepared to commission its second nuclear-powered submarine, INS Arighat, enhancing its strategic deterrence in the Indian Ocean. The submarine, equipped with nuclear-tipped missiles, is a significant addition to India's naval power amid rising threats from China and...
timesofindia.indiatimes.com timesofindia.indiatimes.com
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More SSBNs, more better for us. However, SSNs are immediately required too!
 
Rajput Lion said:
More SSBNs, more better for us. However, SSNs are immediately required too!
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For a project that was approved back on 2015 or thereabouts, there's a lot that the IN is not letting on. Psyops, of course.

The infra exists, funds are likely not a problem given that the PMO directly controls the program.

Waiting for another SSN update from Sandeep Unnithan of India Today. Nobody does it Better than him.
 
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Speedster1 said:
SSNs pared down to two units. More to be approved later
Approx 95% indigenous
Chakra-3 to arrive 2026
Larger S5 class SSBN on the anvil
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No Akula is currently under refurbishment in Russia. Both hulls offered to India were found not suitable for upgrades.

If Russia starts to work on upgrade of an Akula just now, it will take 2028-29 to be delivered to Indian Navy.
 
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Ankit Kumar said:
No Akula is currently under refurbishment in Russia. Both hulls offered to India were found not suitable for upgrades.

If Russia starts to work on upgrade of an Akula just now, it will take 2028-29 to be delivered to Indian Navy.
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This was from a TOI report today. I don't think the Russians will part with their latest Yasen class so without Akula we're in a bind.
 
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Speedster1 said:
This was from a TOI report today. I don't think the Russians will part with their latest Yasen class so without Akula we're in a bind.
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Unless they salvage Chakra, and refurbish it, I don't think we are getting an Akula.

Best course of action now is France maybe...

Leasing, consulting with ssn project, etc
 
Ankit Kumar said:
Unless they salvage Chakra, and refurbish it, I don't think we are getting an Akula.

Best course of action now is France maybe...

Leasing, consulting with ssn project, etc
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Doubt France would share reactor tech but any help with quieting, sonar, periscope, pumpjet would be invaluable.

Perhaps we could take the Arihant's existing 83MW reactor, miniaturize it and port to the Batch-2 Scorpene. Since she's evolved from a long line of French N-subs, it might be feasible. Case in point, the new Brazilian SSN. I'm no expert here but it's a reasonable bet imo. Not sure about timelines, though.
 
Miniaturisation of a nook reactor is the hardest task, scaling it up is probably easier in comparison which of course pose a different challenge when it comes to using the same on a submarine, it gets heavier and completely mess up the balancing act in the submarine hull design.
 
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marich01 said:
Miniaturisation of a nook reactor is the hardest task, scaling it up is probably easier in comparison which of course pose a different challenge when it comes to using the same on a submarine, it gets heavier and completely mess up the balancing act in the submarine hull design.
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The Batch 2 Scorpene should be longer by abt 10m to accommodate the NMRL AIP, possibly wider too. Could an N-reactor be made to fit within this space? In the early 2000s, there was talk about the Scorpene being considered specifically because she could take an N-reactor. Perhaps our reactor tech wasn't mature then, but maybe they could revisit the idea today, if the French were agreeable.
 
Speedster1 said:
The Batch 2 Scorpene should be longer by abt 10m to accommodate the NMRL AIP, possibly wider too. Could an N-reactor be made to fit within this space? In the early 2000s, there was talk about the Scorpene being considered specifically because she could take an N-reactor. Perhaps our reactor tech wasn't mature then, but maybe they could revisit the idea today, if the French were agreeable.
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What kind of garbage are you consuming? Don't fall for BS clickbaits to increase viewership for news.

70 meter submarine submarine to nuclear :LOL: . We are not that stupid or desperate.
 
Tatvamasi said:
What kind of garbage are you consuming? Don't fall for BS clickbaits to increase viewership for news.

70 meter submarine submarine to nuclear :LOL: . We are not that stupid or desperate.
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This was a long time back. Around 2005 when the Scorpene deal had just been signed. Don't remember the exact source now.

It is technically feasible though. It is called a 'tea kettle' reactor. Here’s a link.

www.key.aero

Tea-kettle nuclear submarines!

The current submarine fleets of the world generally fall into one of two types: diesel-electric subs, and nuclear subs. The idea of the tea-kettle concept is to take a diesel electric sub, and instal a small electricity-generating reactor. It is not intended to directly drive the shaft, as in...
www.key.aero www.key.aero
 
Speedster1 said:
Newbie question. Can double hulled N-boats lay still on the seabed?
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I don't think they can. At least that much is known for US nuke Submarines. They have water suction pipe on bottom for cooling requirement, hence sitting on bottom may suck mud or other objects resulting in damages.
 
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