It certainly looks like we are not alone in the world of lightships.
If you want to see what one of these things looks like after it has been painted and done up take a look here. A special thanks to the owners for showing me around last weekend. It was greatly appreciated. Good luck with the rest of the conversion to the arts center. If the inside is done to the same level as the outside it will be a superb result.
These guys are turning theirs into a therapy center. Have a look at their blog. If this does not scare the living daylights out of you then nothing will.
Finally, Trinity Buoy Wharf opposite the millennium dome has a couple of lightships too. Nothing on their site (well just one picture) but directions are there. Worth a look if you happen to be in that area.
It was good to be able to see LV21. Shows what can be done.
LV21 Pictures below