How to connect 3 curves like loft mode

Hi, know anyone how to properly connect these 3 curves in order to get a sail?

What you can do is : convert the curves in mesh. Then on each mesh curve do a loop space so as to balance all vertices. I would keep half of the uper curve and the left of right mesh curve. Create a curve from the middle of the upper curve to the end of the second mesh curve all in shaping it the way you need. That will keep the shape form you are looking for in your model. As your vertices are equal number on each side you may duplicate the upper mesh curve along the two vertical meshes and as such keep the shape of the surface… Then you do a mirror to get the full sail surface… If this can help…

Thanks a lot, I’ll try immediatly…