If people have been confused, it's because there are two ways to argue that non-penetrating hits could disable an ironclad.
The logical way: cite a case where non-penetrating hits disabled an ironclad in action.
The illogical way: cite a test where a gun not yet brought into service penetrated an ironclad in a test.
Anybody's welcome to make the case that non-penetrating hits would disable an ironclad, of course. However, it seems unlikely that they'd also be able to prove it'd affect the larger, better protected British ironclads more than the extemporised Union ones- particularly with that 65:1 shot ratio.
Worth understanding all this in the light of the fact that this isn't the first time this particular individual has made these kind of objections to this timeline. The effort to pour oil on troubled waters is much appreciated, though.
it seems clear to me that you didn't read the source material. All of the tests showed that the bolts holding the armor to the backing were fatally weakened or failed catastrophically when hit by all of the ordinance tested. In short, repeated hits are going to result in complete structural failure
In other words, as demonstrated at Charleston, you hammer away at an ironclad with either sufficient numbers of medium to large caliber guns or for a lengthy period of time (sufficient to gain multiple hits) and like steel ships in the World Wars, they will be rendered a mission kill or sunk.
That doesn't require guns that weren't deployed. It merely requires the guns that were deployed
The CSS Virginia suffered sufficient damage (to name an example) fighting the Cumberland to impair its fighting ability when fighting the Monitor the next day. (it left the battle each day with leaks, a smokestack that had been riddled and then destroyed and a damaged pilothouse)(of course the Monitor left the battle with a damaged pilothouse too)
We don't know the actual performance of British ironclads against a major fort system or sea battle because it didn't occur. But those tests from that source and actual historical results show us that a reasonable inference can be made of what would actually happen.
As to Colorado.... Saph apologize if I was wrong on the geography of this timelines Confederate Colorado. As there is in 1861 a US Territory of Colorado (that is before the ACW begins) it does seem odd that a second Colorado would be created (you might want to consider the desert it is in instead... like New Sonora, Mojave or even South Colorado). The map is a bit vague and you had mentioned you were behind in terms of where things were on a map.
By the way, a British or American Wank does not require, nor should it infer, complete fantasy. It means, at least in what I have seen in terms regularly used in this forum, that the writers hand is weighing in favor of a particular side (British/Confedrate). I will not apologize for calling this a wank, because to me it clearly is.
As to the rest of you who decide to dogpile, your opinion is duly noted and will be given the respect it deserves. For those who where kind enough to stick up for me, thanks.
Saph, I note that the scales of this timeline are tilted from the beginning... the actual chain of events was that Lyons let Seward see the note early unofficially, waited until December 20 to deliver it, and the formal date it expires was December 30th according to the book "Lincoln and His Admirals" which also calls this event the "Cuban Missile Crisis of Lincolns Presidency" and states he went "eyeball to eyeball with the British and blinked" because it was in the national interest to do so.
In other words, Saph you change the personalities and how they handled events from the beginning, which makes the Americans look feckless, actually impugns the honor of Lyons (who was not prepared to leave until the ultimatum expired as he didn't want war either) and that is at the very beginning of your story
(that book also makes it pretty clear that Captain, later Commodore Wilkes may have been mentally unbalanced. He nearly triggered a war with the British not once, but twice... again in 1863 at Bermuda and it could well have come to shooting!). His later court martial was long overdue