Thanks for your comments all. Looks like I uploaded the wrong, unstraightened, version, doh.
It's interesting that 2 of you would have liked to see more of the foreground boat. I could have got a little more of it, but not much. Is the problem that there is not enough boat or is it more a rule of thirds problem where the boat doesn't fill enough of the picture?
Mike, thanks for the midtone contrast tip. I have given it a try but it's not producing a result that I like. Thanks anyway, it'll come in handy in future.
Ray
Cropped version using Rule of Thirds