I never claimed any special expertise. However, I know how frightened people are of numbers and scary-looking formulae, and that is fine by me as I have made a good living dealing with people's number fears by doing it for them.
You may not have claimed expertise, but you have implied competence. And you don't have that, as evidenced by your hanging paper analogy.
I'm not afraid of numbers. However, I have done enough mathematical modeling (though in areas that are not related to physics) that I realize that I need to understand how a model works before I can get usable data out of it. Each model has the area where it can be applied and if you try to use it outside it, you'll get wrong answers. If you treat models as black boxes you get a garbage in - garbage out situation.
I have studied enough mathematics to know that I could study ship stability to be able to give useful comments about that if I wanted to do it. But I'm not interested enough to spend the effort. It's been over 20 years since I last solved a differential equation and I don't want to spend the time to relearn doing that, it took enough hours the first time.
So, I freely admit that I'm not competent enough on ship stability to comment on JAIC findings.
The numbers required for calculating the Estonia's metacentric height and its righting leverage are very simple. Just follow the formulae!
And if you just plug the numbers in the simplest formula while ignoring the effect of water coming in, you'll get garbage out.
Why people try to pretend that 'oh, the Estonia accident is far too difficult for the ordinary person to understand' strikes me as pure intellectual snobbery, when it should be easy enough to explain it to the public in simple layman terms.
It is easy to explain in pure layman terms, that has been done many times in this thread. However, people like you don't believe it. And when it's demonstrated that physics agrees with the layman terms, that's snobbery and browbeating.
The need to publish hundreds of pages of calculations and bow visor sepcifications, together with wave impact diagrams, is simply a form of browbeating.
Yup. They shouldn't have used mathematics and physics to show that the scenario that they propose in the report is possible. They should have concluded that Estonia sunk because Russian smugglers opened the bow gate and visor while KGB blew the visor off and a Russian submarine torpedoed the ship that just hit a WWII mine and a Swedish submarine at the same time.