The counting of views of photos by the Shipspotting web server is something that is done by software. If the Shipspotting web server is typical of most, its software can easily determine where the link was located that led to the view about to be counted. There is more information about that feature of web servers at this Wikipedia page:http://en.wikipedia.org/wiki/HTTP_referer
in case anyone wants to read more about it.
If someone clicks on a link to a photo from within Shipspotting, the part of the server that counts views can distinguish that view from one that came from clicking on a link outside of Shipspotting.
You can probably see where I'm going with this. The counting of views could be restricted to views from the links within Shipspotting itself, if the web server software can be changed to impose that restriction.
I'm neither for nor against doing it, and I don't know how much web server expertise is available to those who maintain Shipspotting, but I thought I'd mention that it might be an option to consider.