The emotive aspect of this image is felt strongly. We feel like we are on a ship, lying down on a deck chair and looking beyond. I like how you have everything sharp but am wondering if a closer crop on the right might do the image justice. Can you see the dark bar there? That hard line takes our eyes out of your photograph and you want to do everything possible to keep the viewer's eyes in the shot. The diagonal sweep of railing adds a lot of visual excitement. Your colour palette is natural and refreshing.