The first thing that strikes me about this image is the warmth of it -- really invites a person in.
This has a very good composition, with the perspective placed the Sun very near the vanishing point. the leading line of the rocky land leads me to the setting Sun -- but then brightness pushes me back out, onto the ship which leads to the land the the cycle continues. This keeps my attention moving from one part to another, never resting and growing bored. The result is perfect for the challenge, I feel the pull to walk along the rocks -- but that won't get me to the destination, so maybe the ship will.
As a matter of personal taste I think the lower portion of the image needs to be brightened a bit and the entire image could be sharper -- but these are at best only slightly disagreeable.
Maybe I just need a bit more light for the journey.