Russia is building a lot more than three modern warships - USC has a half dozen Gorshkov's under construction in St. Petersburg, and the Amur shipyard (Russian Far East shipbuilder) was recently granted a license to build them as well. This is the future of Russia's "warship" backbone now that they've replaced the gas turbines originally supplied by Ukraine and the poorly built replacements from China. The Russian Navy also recently took delivery of a number of new Borei, Yasen and even the redesigned Lada class subs, so sub building hasn't really been effected by the war/sanctions.
Some agreeable; some debatable. There is no doubt Russia's naval civilian industry is pretty much booming, with the world needing Russia's icebreaker fleet (the largest in the world and have the world's only nuclear-powered icebreakers) and Russia bringing back floating nuclear power plants. Military-wise is more mixed. I pretty much agree that Russia's submarine fleet are pretty much as you said the best products Russia has to offer, as Sevmash and Rubin have proved to be reliable, and that Severnaya Verf and Yantar have made good modern Russian ships (even with that big fire that delayed completion of the corvette
Provornyy by 5 years)
Kirov-class battlecruiser Admiral Nakhimov, Get ME out of HERE!
However, Russia's ability to repair their Soviet ships is utterly atrocious. Sending a Russian ship for repairs and refits is like putting that ship into condemnation. Russia's meme of an aircraft carrier
Admiral Kuznetsov had two fires during its repairs and the carrier sunk its dry dock, of which a crane crashed into the ship. That ship is still in repair for seven years.
Kuznetsov is infested with technical problems and for some reason uses heavy fuel oil instead of nuclear power, so the ship is basically a patient having lung cancer from smoking cigarettes. The intimidating
Kirov-class battlecruiser
Admiral Nakhimov has been stuck in refit and repairs since 1999, and Russia apparently gave that responsibility to Sevmash, the submarine manufacturer. 500 IQ move. Putting
Admiral Nakhimov back into service has been delayed numerous times: 2012, 2018, 2023, and now it's 2024. One might be afraid of what would happen if the Navy sent the only
Kirov in service,
Pyotr Velikiy, into repairs.
It doesn't help that Murmansk, the city where mostly ship repairs take place, is a dying city, with residents leaving the city left-and-right for more developed Russian cities.
On the aviation front, the Russian AF is still receiving new builds, including Su-57 (more were delivered in December), and fulfilling export orders (initial Su-34 &Be-200 exports to Algeria occurred last year).
Russia's air industry is more mixed to negative honestly. Mikoyan, the developer of the MiG-29, is gone now because they've been pretty much worthless to Russia since the Cold War was over. UAC merged Sukhoi and Mikoyan since they found owning two fighter jet manufacturers that don't compete with each other is redundant. However, they likely gave Sukhoi more influence and power in the merger since the MiG-35 (Mikoyan's only post-war jet) is such a mediocre plane compared to its Sukhoi counterparts. Sukhoi also keeps pumping new aircraft, even though the SU-57's entry into service was delayed multiple times.
Sukhoi Superjet 100, Rest in Peace
And nothing makes me more sad than Russia's civilian air industry. After Tupolev pretty much were kicked to the curb from the civilian air industry, there was only contender left, and funnily enough, that is the fighter jet manufacturer Sukhoi. Sukhoi made the Superjet 100, of which it had achieved massive success, and there was a huge Mexican airline called Interjet that bought so much of the aircraft and loved it! What was going to be a spark to Russian's civilian air industry was quickly blown out. Sukhoi couldn't keep up manufacturing Superjet parts and the planes themselves, forcing Interjet to cannibalize other Superjets to maintain their fleet. It went so bad that Interjet almost went bankrupt due to increasing maintenance costs with the plane. They removed the Superjets from service and Sukhoi now barely produces the Superjet anymore. Only Russian airlines now use the plane after international airlines basically quit on the Superjet.
Sukhoi pretty much carries Russia's air industry on its back. Mikoyan is gone. Ilyushin just had the only prototype of their newest plane blow up (the Ilyushin Il-112). Irkut and Yakovlev merged to become UAC's civilian division and are struggling to develop Russia's newest airliner Irkut MC-21. Tupolev hasn't finalized their newest bomber or civilian aircraft. Only company other than Sukhoi that is doing okay-ish is Beriev. Russia's air industry would been a dumpster/hell fire if it wasn't for Sukhoi mass-producing and innovating jet fighters which are the only exportable planes Russia can offer to the world (India and Malaysia has specialized Su-30s), in addition to Beriev's specialized aircraft.
The fall of the Superjet still kills me.