I think you're being too generous - the more accurate definition would be 'sad'...
Besides, I may be wildly off the mark!
Perroboy; definitely get the information from them, I think it's the safest bet and won't be hard for them to find out for you.
I take it these people?: http://www.cleethorpesrescue.co.uk/
there's another picture of the RIB and trailer on their 'pictures' page, but the trailer looks different from the picture of the one you've posted. Obviously the frame and docking arms aren't there, but the winch post looks different and so does the roller set-up. Hmmm... definitely get more info from them!
All the best