No, the Delhi class will be decommissioned only in the early 2040s.
Which is even sadder.
The life of the ship is 40 years, and can be extended even further. Look at the Rajput class, still going strong after 40 years. So the ship will be operating the same kit as the new Talwars even in 2035.
We also operated a carrier originally commissioned in 1959 till 2016 (~60 years), that doesn't mean it is wise to do so (or even worth it), we just do it because we are desperate for options.
The only tangible difference between the upgraded Delhi/Talwars and the Visakhapatnam/P-17A is the SAMs, pretty much every other weapons system is in the same class.
A ship is more than its weapon systems. Even if you somehow mate Barak-8 with the Fregat-M2 surveillance radar & MR-90 Orekh fire control radar system, it'll be nowhere as effective as a Barak guided by MF-STAR. A modern Arleigh Burke or Type-45 has Harpoons same as the Oliver H. Perry of 70s. That doesn't mean they are equally effective or that it's okay to commission a OHP in 2018.
And even when it comes to SAMs, the overall effectiveness is the same since both SAMs can stop subsonic and supersonic missiles.
If that were true P-17A wouldn't move to Barak-8, they'd retain the same Shtil that P-17 had (except maybe in VLS setup).
'Overall effectiveness' of something fire controlled by this:
Is not the same as a missile that is a full generation newer and controlled by this:
I don't know how you think the Orekh illuminators paired with an upgraded Buk (base model from late 70s) is an acceptable solution for a brand new frontline warship to be commissioned in mid to late 2020s. Russians already stopped using these in 2018 (Admiral Gorshkov-class is the standard for Russian frigates now, with APAR multifunction radars), the only usage was on Grigorovich which were originally meant for the relative low-threat environment of Black Sea Fleet's area while the Gorshkov was to be frontline, having access to Atlantic.
Either way you look at it, Batch-3 Talwar in 2026-27 makes zero sense unless you want to train hundreds of new sailors to put on sub-standard combatants that can't really work together with IN's frontline combatants and/or carrier groups (all with MFSTAR+Barak-8) in a true network-centric environment with cooperative engagement. They'll be sailing out there kinda on their own like outcasts, at most sharing a datalink with other IN ships. Like how ships used to work in the Cold War.
I don't see us stepping into the future with these ships at all.
This deal is either us getting ripped off...OR...we're giving this deal to Russians because we want an avenue of payment to use as cover for something else we're getting from them.
@vstol Jockey Your thoughts?