Good point Yan. I used to wonder the same thing, though couldn't say it out loud!
I can't remember if this was in the literature or if I just heard someone say it....but it was said that the dimensions of the ark were in line with modern ships. They pointed to that as a sign that jehovah is way ahead of man, he knew the perfect ship dimensions, and now man copies that today.
Here's the funny thing about that...the ark dimensions are similarly ideal to modern day ships BUT there's a catch. Modern day ships have PROPULSION. Without forward momentum the ark dimensions would be a flat out disaster in the open ocean. It would be thrashed about, rolled, and pretty much demolished. There's a reason rescue rafts are round, not rectangular. God wasn't too smart after all.