Makes sense to me.
The Ark wasn’t built to navigate anything, just float. A round vessel would float very well. With no bow & stern, I would think the rocking motion would be minimized.
The dimensions are in the bible, it wasn’t round, they can research all they like, but if they researched the source they’d quickly see how it was shaped.
Considering Noah was before Abram(Abraham) and Abraham was Mesopotamian, I would say it’s a good bet Noah is a Mesopotamian story. The Gilgamesh connection is quite plausible to anyone who thinks.
A round ark? Considering how many fat, middle aged men enjoy the stability of floating in an inner tube in the pool with a drink in one hand and a cigar in the other, I would also say that’s additional evidence in support.