The images shown by default are images after processing. Hover your mouse over the images to show them before any processing.
The image was slightly rotated to flatten the horizon. The rule of thirds was followed to place the tower a third of the way in on the left. The horizon lays on the bottom third line. The histogram was used to level the colours. Colour correction has brightened the image to bring out the boats in the foreground and improve the lighting overall.
The histogram settings were altered to bring out the colours from the image. Image re-framed to improve the composition. Also the brightness and contrast levels were adjusted.