I am Japanese. I'm not good at English.

It breaks when the boat falls at a height of 49 squares from the ground.
There is no problem at other heights, but the boat breaks and dies only at a height of 49.

It's okay for me to break the boat from a certain height, but it's a mystery and scary to break only 49 heights.

I want you to decide the height at which the boat will break. Also, when you fall on a boat, I want you to reduce the fall damage in proportion to the height and give it. (Because the boat replaces the cushion. It is strange that there is no damage.)