Very nice mood, composition and colors.
I think the serenity might be improved further by reducing the strong, black, silhouette of the boat, i.e., by opening the shadows up a bit, into muted, pastel colors, much more agreeable with the rest of the image. Or at least it might be worth experimenting in that direction.
My thoughts exactly. The harsh, deep black conflicts with the soft colours, which is a shame as it's otherwise a very pleasing image. Is there any detail to be found in the raw data?