Very professional shot! The composition follows all the dictates for this type of image. The space on the right, in the direction of the movement, adds to the dynamic intensity. Furthermore, although horizons are frequently levelled, this one by creating the opposite of the foreground contributes to the same intensity. finally, leaving the sky cloudless does not detract at all from the main scene. Going further by eliminating small distracting details, for instance behind the woman closing the group, will improve. Kudos, just the same.
Thank you for your comment. I am going to re-edit this photo to clean it a bit as you suggested. I've almost missed this group of women, as I was actually working on shooting a video and photos of the sailing race: http://vimeo.com/54133537