[AVGWarhawk]

Originally Posted by Slateford-5

I'm no expert on this by any means, but is it not likely that the marine physics people of the belligirents did a water resistance vs speed vs payload calculation and came up with roughly the same answer?

I think Slateford has a darn good theory here. It is odd that all countries have the same diameter. The fleet boats was probably standardized for all tubes in the boats and probably the other countries as well. But, for all to the same diameter?:hmm:

Here is something that will make your head spin:

http://www.sciencedirect.com/science...fa5688d888fe71