Armour a mute point...I wonder! We've made so many advances in armour since the end of WWII for land vehicles, probably a lot of those lessons could be applied to ships if naval planners wanted to bother, but with the lack of serious naval warfare since 1945 I would suggest they have been running on theories, guesswork and "hopes" for so long that we're well out of touch with reality now. A serious war will bring us back to earth in a few short, sharp shocks.
We all remember the Falklands, and how the Brits were dragging weapons out of museums and plastering them all over their tin cans, because when the sh1t is flying at you suddenly every gun makes a difference. Not getting hit is a nice idea, but with displacement hulled ships that can go no faster than they could in 1945, if not 1918, particularly if the seas are a bit rough, how do you avoid getting hit when submarines can go twice as fast submerged as they did in 1945? And aircraft are four times as fast with fire and forget supersonic missiles? When torpedoes are faster, more powerful, more difficult to detect, wire guided, when subs can lauch SSMs? The list goes on.
No one wants to face it, but in a serious naval war displacement hull vessels are done without a technological revolution in survivability.
Can't disagree with anything there.
Modern naval warfare would be... Spooky. Ships are big targets, and modern weapons are highly accurate, incredibly lethal and powerful, and have a stunningly long range.
No one has fought a major naval engagement since WWII. And the lesson to be taken from WWII is that, when it comes to naval engagements, air power wins.