After months of searching I have managed to find a little bit about this boat. It is a Dodnor Star Trekka 16", it was manufactured by Dodnor Marine
on the Isle of Wight. It should have bilge
plates fitted as they were only designed with this option. My lifting keel
boat was modified badly and this is the main reason she has sunk as the hull
is not rigid enough to take a lifting keel. I have asked the National Maritime Museum if they can supply original plans for this boat and I will investigate whether or not she is worth saving. As I got her free I can afford to spend a little on her. Luckily I am trained in composites being an Aircraft Engineer
so I will be doing all the work myself.
Thanks for all the helpful replies and watch this space!