The wired looking thing are some sort of automatic slingshot that shoot 60 projectiles before they need a reload. They work on a mechanic similar to the one in the video. https://youtu.be/tbKGjRoSofA
Oh please, you wouldn't say that if you learned physic This type of ships is not using the same floating system as wood boats. They are using the fact the air inside the boat to keep it above water (it's like putting soap plate inside water, it won't sink because the pressure of the water on the boat.
I don't need to learn physics to know BS. The fact that it's made of steel and iron,M has gigantic catapults with glass balls full of greekfire that would need to fit the size of the weapons, made to carry heavy cargo, it's huge, giant X Bows that rely on a huge bunch of gunpowder for the big projectiles, the wired thing which is no doubt a bomb that would be most likly big, has food and water for a year, and that it carries 504 sailors would make it sink. Not to mention it would be impossible to know how to make it move in this age
There are 3 ships, each one carry let's say 150 ppl, 4 X bows and catapults, 2 of those things and 20 glass balls filled with Greek fire, 20 arrows like projectiles, 240 X bow projectiles, food and water for 200 for year (water is 2 liter food is 0.75 per day), each of the man carry 5 kg with him and the weapons are one sword and shield per person. Ok that is 240*0.1+20*10+20*5+6*75+150*60+360*2+360*0.75+5*150+7*150=12,564 k"g The rubber duck (that's my ship name from now) can carry up to (hope that this means max) 12,026 k"g (it can carry more but then the waves will sink it). Holy shit I hate math. But you are right I'll change that to 100 man per boat
How do you get steel? How did you make glass balls of Greek fire? How do you have gunpowder? Covered with rubber and steel? How? Why would you make a cargo ship a warship?