About twenty years ago the Dashews gave an account of a long ocean trip in their new yacht Deerfoot. They mentioned boat length and weight and three characteristic speeds that my Index of Sailing Speed predicted to the first place of decimals.. I cannot find that article. The first person who identifies it and emails me at firstname.lastname@example.org will get my thanks and an autographed copy of my new book Really Understanding Sailing. Or you can leave a comment.