You cannot prove that something do not exists. But you could prove that it exist. So please do so, give any evidence that they have 152mm or 203mm new generation naval gun in advance test phase.
They said that they will be using 152mm calibre weapons in the Russian Navy...
All the necessary photos of it are included in the thread showing the test videos and photos of the Zircon hypersonic missile they also have in testing...
Some of them are blurred because they are secret of course.
Did you ever see that new gun in tests? Do you have any link that live tests of prototipe is performed?
Why do you think they would tell us?
BTW the drawing above was not done by me...
So, as for now I do not have any fact to assume they have such gun, I will rather assume that they do not have it then vice versa.
They reintroduced the Sverdlov class cruisers because they had 152mm guns and they wanted them to support their Ivan Rogov landing ships... what have they just laid down... do you think there are any Sverdlov cruisers left to drag out of mothballs?
They stated that they were going to introduce a navalised 152mm Coalition gun for the Navy... I would think it would make sense to replace the Bereg coastal gun, so they can justify making quite a few of them and in terms of design they could just be the land based Coalition version on the wheeled truck mount for minimal costs to buy and operate, but for at sea use it would make sense to fit them to heavy destroyers and cruisers too... the same way the 130mm guns were fitted to Sovremmeny class destroyers and Kirov class cruisers after the first one which had two 100mm gun mounts the later ones had a single twin 130mm gun mount as fitted to the Sovs... which had two.
Remember for how long we have info about new 57mm gun for IFV and Navy? It is produced long time ago, and we see it years ago but yet we do not have any in serial production or operational usage.
The Army model is more urgent because enemy IFVs can't be penetrated at combat ranges with 30mm cannon any more so the 57mm round is necessary, but they are also making an air defence gun version for shooting down drones and munitions and aircraft, which is also going to enter service too.
One company actually has a unified turret for land vehicles and naval use...
http://roe.ru/eng/catalog/naval-systems/shipborne-weapons/au-220-m/
A192M is not actually new as, afaik, under the surface that is same old AK130, they made new turret for stealth ships. But maybe that will be the case now that they just give reshaped turret for old ak130 but from my point of view having in mind that Kirov is not stealth that is nonsense.
The old AK130 was 98 tons without ammo.... the new A192M is 30 tons without ammo.... yeah... they just reshaped the turret to make it look stealthy and that is why development of new Russian ships takes so long... take 68 tons off the turret shell of a gun mount is very tricky...
Regarding Koalitsia, that project was abandoned or I am not wrong?
Then what are they driving through Moscow in parades with Armata chassis and 152mm guns.... let alone the truck mounted versions...
and naval guns will never get the desired result these days, so you're just wasting many trying to naval bombardment.
With the improvements in communications and technology down to the individual soldier I would think having guided artillery shells soldiers taking a beach can direct with metre level precision might make a bit of a difference during a landing... especially ship gun fire which is not cancelled at night or in bad weather, or because enemy air defences are too strong...
The guns would require enemy forces to be fairly close to the coastline after that they are useless.
Even just standard existing shells with 70km range they could sit 50km offshore and hit targets 20km inland... later improvements to 170km improve performance even further... but the soldiers will be taking weapons and vehicles with them... it wont be their only support...
Please don't bring up old rust buckets made over 30 years ago that the Russians themselves don't even care for, the guns on those were found to be inadequate for the intended purpose.
The 130mm guns of the Sovs would struggle to be useful... with an effective range of only about 26km they seriously lack range, but the whole point of cooperating with the Army to develop much longer ranged guided shells happened for a reason...
Sure there are situations where a gun is needed but they are very minor and mostly self-defense reasons.
Greatly increase the range and make them accurate and they suddenly become very very useful.
The Zumwalt shows a gun that is cheap, long ranged, and accurate is a disireable thing... they just stuffed up the implementation that is all.
and they did no strategic damage what so ever.
Why would you expect strategic damage?
Not really, you will not find that many targets close to a shoreline just the most basic requirements. You need to fight in a war to get a better understanding, You're just giving me online talking abouts.
What tends to happen when you start landing your own troops on a beach in enemy territory is that the enemy often then sends its own troops to oppose that landing... the enemy targets come to you... even if you don't destroy the entire enemy force with shells it is not important... quite often even if the shells make the enemy keep their heads down while the beachhead is established and expanded then often that is all you need... the landed troops can then do the rest.
Other uses are for interdiction of shipping in blockade or anti-piracy operations. You can send a clear signal with arty without wasting a multi-million dollar missile. Nothing will stop a merchant ship faster than a 100mm HE exploding in the water a few hundreds meters from their bow, or a shell sailing 10m over the bridge deck.
More importantly you can get creative... a smoke shell landing on the main deck of a ship can form a serious distraction... and as you say... you can fire warning shots that don't cost millions of dollars each.
Thanks to a JV with Bulgaria they also have jammer rounds in 152mm calibre that are used to jam communications within a few hundred metres of where the shell lands... punch a few into the side of a ship and they wont be crying for help... a non phosphorus smoke round entering the bridge will clear it pretty fast too...