Curvature surface on the top.

Does anyone know a better way to do it?

3 Answers

It seems fine, but I really don't know what it is, or what it is supposed to look like.
If you wanted to save some time, just model half, then mirror the body to obtain the second half. It should save some time.

It's not exactly what I need. The shape looks like attachment below. I am able to make one loft-surface on the top, but something is wrong with bottom surface. I am getting absolutely different surface.

Another way. 10 functions instead of 21