Poseidon could probably destroy an aircraft carrier to smithereens in the open sea and not just in port.
And a strategic bomber carrying strategic nuclear armed cruise missiles could probably destroy a carrier too, but its main problem is that it is intended to hit fixed targets on enemy territory so getting it to find and hit targets moving at sea would be almost impossible.
The Poseidon hits ports or fixed positions at sea where its nuclear explosion would have the greatest effect... it wont be able to detect if there is a ship or sub nearby, and certainly wont be able to find shipping to destroy. Satellite images show aircraft carriers easily enough and conventional subs can launch nuclear armed torpedoes into the paths of carrier groups they wont need to get anywhere near.
Why waste a Poseidon doing that?
Although, the Poseidon would also be an excellent weapon to destroy the American shipbuilding industry.
Poseidon is an underwater cruise missile intended to hit fixed targets of high value, taking out a major port would make sense. Trying to get subs or ships with it would be difficult and not likely to succeed.
Mark my words; Russia will NEVER have 24 SSGN submarines and Russia will NEVER have 24 project 22350 frigates. Maybe ONLY in 2050.
Perhaps you need to look up the meaning of the word never.... especially when shouted.
Did it occur to you that they don't need 24 SSGNs and they don't need 24 frigates right now and that other things are a bit more important?
New Frigates are nice, but real nuclear powered destroyers and cruisers would be more useful in international waters.
On-board systems, batteries, etc. will probably not last a year.
How long do onboard systems and batteries last on an SSN? The 3 month tour of duty for SSNs is normally because that is how much food they can carry and much longer than that and the crew goes a bit stir crazy, but Poseidon stores no food and no crew so what are its limits.
Poseidon's sonar is too small to detect SSBNs from hundreds of kilometers away, that's bullshit.
Very true, but a torpedo the size of Poseidon could carry literally hundreds of small nuclear warheads... 10KT warheads used in 152mm artillery shells weigh about 40kgs each... you could stack enormous numbers in Poseidon... it has unlimited range and could sail to a launch area used by western subs and just sow the sea floor with these nuclear warheads... create a grid and place them every 4-5km apart on the sea floor... the blast radius of a 10KT nuke is going to be 5-6km for each bomb, so maybe put them 12km apart, and then when you are done set them all off at once... bound to get something...
The point is that that same warhead load could be used up and down the US coastline to render their ocean access radiated and damaged... which is what a dooms day device is supposed to do.
I'm not a megalomaniac and I don't dream of aircraft carriers and nuclear destroyers, but a decent fleet made up of frigates (somewhat larger displacement than the current 22350) and MANDATORY SSGN submarines.
But you are... you want Russian subs to be produced in the most numbers and be the biggest fleet, but that is expensive and is of no use to the Russians in the future.
It does not help future Russia to have more subs than the US in any way.
The number of SSGNs will not effect anything at all in peace or during a war.
Frigates are home sea use, and while they are useful, they do not help boost trade or protect trade relations with countries around the world.
One SSGN is around 1 billion $.
S-400 launchers are probably less than 100k. What's expensive is the radars.
More importantly 1,000 S-400 launchers in 250 S-400 batteries give Russia an excellent view of the air space around them with their radar and systems, and keep much of Russian airspace safe from a wide range of enemy air threats.
Not perfect obviously but serious limits an enemies options for an air attack on Russia because S-400 wont just blunt such an attack, it will brutalise it... and used in conjunction with airborne radar like A-50 and A-100 it can hit targets at extreme range right down to ground level.