That's not a bad idea I have saved this in my notes. You need a few reference points in the background you can see (specifically a water height marker for when the tides change, most cargo ships have markers as well on the side that work as a good reference also). Another thing would be determining when to activate the zoom. With a p1000 if you look at the wrong time you will just zoom into what appears to be fog, or refraction/mirage.

That's not a bad idea I have saved this in my notes. You need a few reference points in the background you can see (specifically a water height marker for when the tides change, most cargo ships have markers as well on the side that work as a good reference also). Another thing would be determining when to activate the zoom. With a p1000 if you look at the wrong time you will just zoom into Wesley appears to be fog, or refraction/mirage.