I am not sure whether there is an unambigious definition of leading lines, but in my book, they should be a line or several lines that lead the viewer's eye towards the main subject of the picture. I think that's not the case in this picture. Your pic uses a vanishing point rather than leading lines.
Very calm and serene. I like the colors. The one thing that would have really made this shot better would have been if the dock actually led to the sun. Even though there is a leading line, the line leads me away from the sun; the brightness off to the side of the end of your line is what brings my eye to the sunset / sunrise. Aside from that, nice use of the rule of thirds.