Most states recognize a cause of action for intentional interference with prospective economic advantage. You would be in dangerous territory, IMO, probably not worth the risk. As a practical matter, however, how would you expect to offer the survey to prospective buyers? Certainly neither the seller nor his broker has any self interest, or duty, to make that offer for you.
It is not an uncommon occurrence. As a surveyor it has happened to me several times per year. It's a very small community and word of who has done a survey on a specific boat travels easily within a local area.