I love photos of the sea and boats and this is a good one. Only problem I see is that you used 1600 ISO on a sunny day? It has made quite a bit of grain in your sky. Try using the lowest ISO you can shoot with - especially in bright good weather! I only ever resort to 1600 when the light is going - practically dark - and I am hand holding the camera. The sky is a beautiful blue - did you use a polarizing filter or did you saturate the blue in post processing!
Anne, thanks for your comment and advice. I'm so new with this camera. I'm learning about ISO...as you can tell, I haven't mastered it yet. As a matter of fact, on that day I didn't even know what ISO was! I did a little editing after in Picasa but can't remember what I did exactly.