The local USCG has approached a good and qualified local boat tower and salvage yard, to pick up an abondoned boat. A Watkins 27. Boat info says the balast is 3,500 pounds, but does not say what the material is. The boat, a fresh water boat, is not worth saving, with minimal parts other than the mast, boom and maybe the wheel. What is the construction of the keel, and is there any value??