My original score was 8 only because some of the other 'Boat' photos were very, very good with super nice backdrops and stuff. But now, at second look, I see nothing in your photo that should prevent it from being a 10. So, there you have it: 10.
Blues are nice. Coloring is nice. I like the attention to the cropping details...the bottom of the blue stripe just hits the bottom corner of the shot, as the railing does the same in the upper corner. These things make viewing a picture of any quality a pleasure...and the quality of this one is wonderful. Thank you.