Yachting and Boating World forums: can anyone help identify this boat please ?

i have just purchased an old boat for fishing ,i would like to know who built it its weight and age.the boat is a day cruiser with a small front cabin and an unusual crescent shaped front window.its very pointed at the front,its constructed of g.r.p.
with a blue hull and white cabin gelcoat finish its 15 foot long in total and has a buoyancy tank in the front of the cabin (pointed ) and two rear corner tanks,its displaying huntsman badges but it wasn,t built by fairey,it has two outside seats behind the cabin and a low cut rear section where my outboard sits.its possibly built in the 60s or 70s .it has a rear underside fin which houses the drain plug and a small lift off curved roof section on the cabin top and holes for hand rails .
can anyone help please ?email me back at kenny_burrows@hotmail.com
THIS BOAT WAS POSSIBLY BUILT BY A MANUFACTURER IN COLCHESTER IN THE 70'S.ANY IDEAS WHO WAS BUILDING BOATS THERE ?
if anyone can send me an email address i would gladly send a small jpg image for identification . thanks !