My experience with boats involves motorized junks of 40 ft or less. So, far as we know the only real evidence (besides brilliantly told stories and tourist trap reconstructions as ground mounted walk-ins) of Zheng -He's ships are a single rudder that (if mounted in a stern fore-aft style and not a Dutch "sideboard style") mathematically gave boat dimensions of 500 ft. I know of only 1 350 footer made of "Glue lam" and plywood structure and it was rather unseaworthy.
A 500 ft wooden boat could be made using "pod" structure but I dont know how its done so Ill yield to your imagination.
Did Zheng He's massive trade armada exist??
We have that one rudder and no other evidence .
Could this have been some alternative factoids??
ANYWAY, what the **** does this have to do with evolution ??
You are ducking sciemve again and just looking for opportunities to post your cartoon world crap.