What I get in this picture it's a plane crossing the skies of Funchal. Besides the white line that sometimes leave on its way you can see a shadow of that line, which is not common.

What you see in this photo? A ship in a bad sea? Could be but is not. One of this days, the sky in Funchal was different. The wind up there make beautiful paitings. I just use a part of my roof and mixed. I hope you enjoy. I do it for you.