Have you seen another version of this ? Is it an example of an editing effect ?
The reason I ask is because the file I'm looking at is too small ( on my iOS ) to determine if/how/where it's been masked, lifted etc.
However my guess is the light was good when the picture was taken anyway. Also the depth of field is very well managed, looks like the photographer has focused to allow the boat to fall on the rear plane of focus, giving a sharp foreground plus boat, but dreamy background. Maybe it was done with a mask, but again file too small to tell.
I'd hazard a guess this has been taken by an accomplished photographer........