The Sheer Size
For someone to build their own ship is one thing, but to actually manage to build one that is five stories high is something else. Amazingly, the Ark also weighs 25 kilotons but is completely stable.
The Ark can also hold up to 4000 passengers and has space for up to 15000 kinds of animals. Johan also took further steps to ensure that the Ark can fulfill the same functions as Noah’s did.