Is it really possible for a ship THAT size to be flipped over? If so how much force would it take to do so?

P.S. your show is amazing I have won a couple of bets because of some of your myths. i.e. the golf through a tree.

It depends on the ship's design.

There are quite a few example of ships capsizing. The first thing that comes to my mind is the battleship USS Oklahoma. There are a LOT of instances of ships capsizing durng the way.