Panokseon:
https://en.wikipedia.org/wiki/Panokseon

This is my first ship I ever made in Minecraft. Unfortunately didn't find enough information to build a valid interior. Feel free to do whatever you want with it, you don't need to ask. But I must appropriately be credited for my stuff. I installed Cimap's command block cannons as red stone cannons look horrible and take up too much space. Enjoy the ship!