This might be the stupidest question I’ve ever asked but.
How do these ships not tip over? They look so top-heavy and the underside is so skinny
The lowest parts of the ship are filled with water to add weight and avoid that.
Each ship has a calculated stability in design and loading, a cargo ship usually has a loadmaster position who uses cargomax software to help check that they do not exceed stability limits.
A cargo ship hull middle third has a very flat bottom. It is only shaped at the front and rear of the ship to reduce drag.
Some people like trains. I like ships.