Nicely captured. Good sillouhette. Some noise in the stern of the boat but there is very high contrast there. Not sure about the composition though? There seems to be an awful lot of empty space at the bottom of the shot, I know there are reflections but it still seems a bit much to me? Well done anyway, a six from me.
cropping this photo as a panorama would improve it a lot, there's too much of the water in the foreground imo, otherwise this is a good silhouette photo.