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I am considering the purchase of a 1996 Guardian that was previously a Coast Guard patrol boat. The boat is in Texas and I am in North Carolina so I have seen only photos. The purchase is contingent on a favorable marine survey. Today the survey was done and the only significant problem was that the moisture meter showed a reading that would be indicative of moisture along the ENTIRE transom. The surveyor indicated the 30 inch transom appeared to be structurally solid but the moisture meter readings were troubling / puzzling. He said that other than moisture, the readings could be caused by certain metallic compounds. I am trying to determine if this is a "false" moisture reading or an actual problem. Does anyone know about the construction material used in the transom of a Guardian former Coast Guard boat (any metals)? Has anyone had a moisture meter reading taken on a Guardian transom.