Arihant-class SSBN - News & Discussions

RISING SUN

Senior member
Dec 3, 2017
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This is either INS Arihant (SSBN 80) or INS Arighat (SSBN 81). They are both identical so impossible to know from sat pics :
View attachment 20394

This is the S4 submarine. It has 1000 tons more displacement than the 1st two submarine of its class. The S4 is supposed to be launched this year. The last sub (called S4*) is still being constructed inside the shed.
View attachment 20393
This photo is there from at least 1.5 years and yet to updated. And in between a new shed has come up further south east side towards open ocean direction. In present scenario I can find 5 places where SSN/SSBN can be berthed while three sheds are clearly avaiable, 2 seems to fixed and empty (supposedly) while Arihant is in open and Arighat is partially visible. Another thing to note SSBN housing site seems to be functioning now as entrance tunnel is deeply mixed with terrain hence difficult to spot for untrained eyes and a ship is always parked in channel to either anchor a blocking wire or clearing of the channel.
 
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Gautam

Team StratFront
Feb 16, 2019
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Tripura, NE, India
This photo is there from at least 1.5 years and yet to updated.
The photos here are old, but not that old. Check post #279 on this thread. The dates marked on that post are dates I took those photos, not actual dates when the photos were captured by satellites. You will see a lot of changes in the last 1.5 years.
And in between a new shed has come up further south east side towards open ocean direction. In present scenario I can find 5 places where SSN/SSBN can be berthed while three sheds are clearly avaiable, 2 seems to fixed and empty (supposedly) while Arihant is in open and Arighat is partially visible. Another thing to note SSBN housing site seems to be functioning now as entrance tunnel is deeply mixed with terrain hence difficult to spot for untrained eyes and a ship is always parked in channel to either anchor a blocking wire or clearing of the channel.
Alright I have heard some similar things. But these are just speculations, so believe at your own risk.

I have heard that L&T has completed building at least one of the S5 class SSBN's hull. The hull was built at Hazira port & transported to SBC, Vizag. At the SBC the hull is kept at some underground facility. Documents from BARC suggests that the development of a ~190 MWe nuclear reactor code named CLWR-B2 is complete. BARC is now fabricating the reactor after which it will be assembled onto the S5 hull inside the underground facility.

CLWR-B2 stands for Compact Light Water Reactor-B2. The 83 MWe reactor was named CLWR-B1.
 

RISING SUN

Senior member
Dec 3, 2017
9,671
5,048
The photos here are old, but not that old. Check post #279 on this thread. The dates marked on that thread are dates I took those photos, not actual dates when the photos were captured by satellites. You will see a lot of changes in the last 1.5 years.

Alright I have heard some similar things. But these are just speculations, so believe at your own risk.

I have heard that L&T has completed building at least one of the S5 class SSBN's hull. The hull was built at Hazira port & transported to SBC, Vizag. At the SBC the hull is kept at some underground facility. Documents from BARC suggests that the development of a ~190 MWe nuclear reactor code named CLWR-B2 is complete. BARC is now fabricating the reactor after which it will be assembled onto the S5 hull inside the underground facility.

CLWR-B2 stands for Compact Light Water Reactor-B2. The 83 MWe reactor was named CLWR-B1.
Post 279 is actually matching with my post. Just to clarify more what I was intending to say was that there is no difference in visual sighting of boats and no 3rd boat is seen since 2nd boat was visually sighted since at least 1.5 years and we can see full Arihant boat and partial Arighat boat if that it is. Further Akula is also not seen since the same time frame roughly. Last time it was seen was just around Galwan incident. What you're saying the movement of cover over the boat, not the visual sighting of the boats, right? If that's what you're saying then we are on same page.
 

Gautam

Team StratFront
Feb 16, 2019
12,492
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Tripura, NE, India
What you're saying the movement of cover over the boat, not the visual sighting of the boats, right? If that's what you're saying then we are on same page.
Yep that's what I meant. Movement of cover & at times movement of one of the subs. Its always 2 SSBNs, no more no less. One of the subs is always a bit bigger. This pic shows 2 subs side by side :
1627840325254.png


In a normal submarine building cycle, covers are removed at the end of the outfitting work. This is because you would need a crane to arm the sub with SLBMs & cranes can't work with covers on. In post #279 & the pic above you will see that the covers are completely removed suggesting the sub is ready for sea trials. But in the pics I posted today (#299) shows the cover is back on. Wonder if they are 2 different subs. Maybe the larger uncovered sub seen above is the S4 & the covered sub on #299 the S4*.