The ship that IN wants can only be made in a Western foreign yard, that has experience with building nuclear powered Carrier. Which limits it to three countries - USA, UK and France.
If that is the case, expect a cost in the range of 10B.
A simplistic logic is that we acquire reactor and mechanicals from Russia, do hull fabrication in India, and get EMALS and weapons from West. With the current bad blood between Russia and West, this approach can fail easily.
UK has no experience with nuclear-powered carriers, they never built any. Highly doubt any French shipyard has the physical capacity to accommodate a 65,000-ton carrier. This doubt was expressed not by me but by ex-servicemen from France on IDF.
In anyone's wildest dreams, the US is not going to build & transfer a new nuclear carrier to India.
Here's what's gonna happen : the Directorate of Naval Design (DND) / Naval Design Bureau (NDB), the same entities which designed the 40,000-ton IAC-1, will also design the 65,000-ton IAC-2. The only foreign assistance being sought is for a peer for the
design-review process. This means a number of foreign agencies will submit their bids for lending design-reviewing assistance to DND/NDB. Whichever agency is selected (based on expertise they're willing to offer, and how much they charge for it)
is NOT going to design a carrier for India - their contribution will be in very specific fields where they excel; for example, such a company might have unique expertise to offer for building air-conditioning in the carrier's crew quarters, they might have some solutions to offer with regard to comms room layout, lighting facilities, life-support equipment, and other internal engineering-related aspects. Too early to say exactly what's going to be done with foreign assistance inside the carrier.
Even multiple foreign agencies can be employed to lend their expertise in critical areas of their excellence, as we see fit. There's nothing strange or wrong about that. Even US shipyards hire help from leading European naval engineering companies for many of their leading vessels including Gerald R. Ford-class ACC and Zumwalt-class destroyer. We're likely to hire mostly European/Russian agencies as consultants/sub-contractors.
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and NO, the IAC-2 is NOT based on any foreign design. Such news are deliberately planted by agencies for purposes of page-ranking. India is not the only country with press-titutes. Only extremely gullible persons will believe it when someone says Russia is going to design a carrier for India. Russia, on the overall, has infact lesser carrier-construction expertise than India at the moment. That's a fact. The Soviet shipyards that constructed carriers are now in Ukraine, and have lost all their culminated work-experience over the decades. Russian yards lost their marbles even trying to refurbish an existing ship like Gorshkov.
The reactor is not coming from Russia or anywhere else...
whoever even thinks it's possible to just import military PWRs from abroad just like that, LoL! ..... the reactor, just like the previous Arihant reactor, will be developed within India. Russian help, however, will be there...but under the strictest levels of secrecy and will be of an extremely low-profile nature. Even for Arihant, everyone with a good understanding of defence matters knows very well that the PWR or even the hull fabrication wouldn't have been possible without Russian help, but is that publicly announced or written by Govt. sources or press-releases? No, absolutely not. Such will be the discreet nature of the help.
As of EMALS,
the US already knows very well that Russia is involved in a big way for Indian naval PWR efforts. Yet, they are opening up for an export of their latest aircraft-launch system to India. They have their reasons...if they were gonna have a problem with Russian input, either they will keep quiet about exporting any EMALS to India, or offer to replace Russia in the fields where they are currently lending a hand. Neither will they halt the offer for EMALS, nor will they offer assistance with PWRs.
Even the IAC-1 has several internal bulkheads & stuff from Russia, will be flying Russian MiG-29K fighters, and is yet powered by US General Electric LM2500+ gas turbines. If they didn't have a problem there, why should they have a problem now? Heck, why would they even be entertaining the idea of supplying EMALS to India in that case? Please learn to connect the dots, people!
Anyway, the EMALS would only be launching French/American/Indian aircraft. Russia has no alternatives to offer for any planned air power contingent on IAC-2, so stop hyperventilating, okay? Fighters will be CATOBAR-compatible and requirement for fixed-wing AEW aircraft is being identified. No Russian planes fit those criteria. Simply put, as far as EMALS is concerned, there are
ZERO incompatibility issues with the aircraft. Heck, even all naval helicopters that are expected to be used on IAC-2 are either of American or European origin.