Yes , it does come under the IN & what you say is quite possible . Wikipedia not the best or even most reliable of sources has this to report .
en.wikipedia.org
Then there's PKS
Official Statement: France’s President Emmanuel Macron dialled India’s PM Narendra Modi on September 21, 2021 to talk about strengthening c...
trishul-trident.blogspot.com
Owing to the lack of literature in the public domain on such sensitive issues , I find PKS's observations & predictions on our SSBN & SSN program quite informative & useful .
For eg he called out the fact that we haven't tested our BMs from the submarines but from submerged pontoons many yrs ago & stubbornly persisted with his stand in the face of much opposition on his blog from other commentators till he was vindicated when news came out late last yr that we'd tested the K4(?) from INS Arihant .
I like such story tellers & his track record in divulging such information which's hard to come by any other sources plus his predictive abilities has been quite good & consistent over the yrs .