Outside Crimea, because it was only a few kilometres from Sevastapol, that doesn’t matter much to change the tacitical picture. In my post, I only mentioned Bastion defense, which is Russia’s inner most point defense that they only deploy around, well, fortified bastions. Their layered defense is much greater and involves other weapon batteries. There are around 25 000 Russian troops stationed in Crimea with some of the most advanced electronic warfare capacity in the world.
Reading comments above I have come to the conclusion that you guys may not know the capacity of Russia’s formidable fortified strongholds, such as Moscow, Murmansk, Sevastapol and Kamsjatkha. These areas are bastions in Russian military strategic thinking and they are defended by layers. Bastion Anti Ship batteries (which have far more than 100km range, basically only radars hinders it’s efficiency on longer flights) are point defense.
There is not a theoretical chance that a single Anti-air specialized cruiser, destroyer, battleship, what not, could survive hostile contact outside the gates of Sevastopol. It is like walking into Mordor while dressed like fancy High Elves with shining baubles, not expecting Sauron’s eye to illuminate you.
It would take an entire NATO fleet to contest the Black Sea around Sevastopol, one combatant (sure, Dutch destroyer too) not enough even in theoretical game scenario where absolutely everything possible goes right (which it won’t in a real scenario). And when Russian defenses are on yellow alert or higher ? No chance, not even an extraordinary slim one.
To be honest, I am genuinely surprised to read that some of you seem to be thinking that HMS Defender could have contested what Russia has in that theatre, which happens to be a critical theatre for them . It simply doesn’t work like that. While Sevastopol may be Ukrainian and while I support what the UK did, it is still like a mosquito pestering an elephant. The Black Sea Fleet is full of silent diesel attack submarines. It is their waters (not politically, but in practice and they know the sea-bed area there better than any). There are so many different weapon systems and various kill vehicles that could kill the Defender in an escalation scenario that I view it to be pretty pointless to start listing them up. And logistics ? It was outside Sevastapol, man. Within reach of significant portions of The Southern Military District. It’s base ? Rostov an-Don, a few kilometers from Crimea; basically on the other side of the Kerch strait.
So yes, for the HMS Defender and whatever possible submarine followed it into the jaws of beast (which it pretty much is, penned into the Black Sea outside Savastopol), they would face off against the base defenses of the Southern Military District, a military District that is on relatively high alert since it is responsible for breaking the back of the Ukrainian armed forces in the event of re-escalation.
It would be the same if the Russians for some reason sent unsupported ships to the coast of Britain and things escalated, they would be equally dead in the event of escalation too. Because it really doesn’t matter how good defenses any single surface combatant has, when the theatre is absolutely saturated with threats.
That having been said, a Type-45 Destroyer is an awesome ship, superior to individual ships in Russia’s navy and absolutely State of the Art (better aerial defense system than US Aegies for instance). I wish the UK had more of them, because they are very potent surface ships indeed. But a solo ship without a fleet outside an adversary main base, is still incredibly vulnerable no matter how formidable technologically it is due to the nature of logistics and massive array of threats.