I think this site provides excellent indicators but no-one’s perfect. Human error is unavoidable and incorrect draft and displacement numbers are inevitable. Yachting magazines are not great with some reviews I’ve read when pounds and kilograms and feet and metres figures defy logic. The data freely provided here is invariably accurate and is often at odds with the specifications produced (perhaps using the pin method) by brokers. I respectfully suggest that a lot more research should be undertaken before compiling a short-list or making appointments to view. This site is a great start, nearly always. Good luck with finding the perfect boat, hopefully close by.