I like the overall effect of this shot Huw, to allow the boat in colour to stand out in contrast to the foggy B/W background. However I’m not too sure if the contrast is possibly too much.I wonder what it would look like with the colour saturation taken down a touch.
One of the background boats does keep tugging my eye away, it’s the one to the right with the bird on top. It’s just a bit too dominant in the frame for me. Not sure what you could do about that.
(you don’t want to be dragging that little thing around with you all day)