Don't know how much precision metalworking that calls for, but nothing would surprise me, what work might have been needed on a ship, might have been a skilled gunsmith also.
I will say that I think your definition of practical experience must be quite comprehensive, if you do not view yourself as having much of it.
I doubt you will find the likes of that much information on one channel, so you might have to delve into metalworking ones aswell, and so on.
Pity there's not much machine restoration or metalworking relating to woodworkers on YT yet.
A few like Jack Forsberg, but I don't recall him doing much with hand planes for example, he mainly demonstrates his beautifully restored Wadkins and such.
I have lapped enough metal enough times to know what happens when you don't leave the edges proud.
Wouldn't have learned if I wasn't into restoring machines, making tools and other components.
I still call myself a woodworker though, although I have spent as much or more time on metalwork.
the other could be called bodger but that words allready taken by the woodworking folks, bad mechanics or builders
I'm not really that concerned whether someone has crediantals or not, the less talk about anything unrelated the better,
Not interested in their life story or what papers say about their expertise.
You gotta find who's the best at what they do, doesn't matter if they haven't done much else
I just wish to learn the skill that someone is demonstrating.
Plenty of folks making videos on their own, so those skills would nearly have to be encompassed
as being savvy with computers also would be applicable, if you were to try and find someone willing to show you real world work,
i.e, Not cut scenes and the likes,
unless the presenter has a very broad spectrum of viewers to be able to afford a cameraman.
That route always revolves around money in the end of the day, and less about demonstrating the best work that they can do.
He who dares to teach and learn in real time video, is who I'd rather watch.
Tom