Hunter 27, 1976-1978 at least. Damn near guaranteed that the keel will fall off some day. How do I know? Because my 6 year old 1976 Hunter 27 tried to leave the keel on my trailer when they lifted it to set the boat in the water! That's when I discovered that the designer had TCDA (Terminal Case of Dumb Ass). The hull design was so poor it had to fail.
3 five gallon buckets of ground up fiberglass, cutting out the entire floor, removing all the stringers from the entire bottom of the boat, and 5 gallons of epoxy resin and I fixed it myself. The next year I sold it, so we could buy a house. The new owner called me 8 years later becuase he suddenly had water in the bilge for the first time. It turned out the heavy rubber padding I put under the stainless plates carrying the bolt loads had dry rotted! He replaced them and sailed the boat form NJ to Florida offshore again.
Gary H. Lucas