Thanks for the information on finding out the hull number of my "new to me" M-15. It is hull # 322 and was made 5/85. The hull is forest green with a red stripe around it . We bought it in Maryland because Joe Super was kind enough to save me a couple of hours additional driving by meeting me in Hancock MD. I bought it sight unseen and just had the M-15 reputation and the emails back and forth to Joe to go on, but I don't think I will be disappointed when I actually get to sail it. He suggested replacing the line for the centerboard. Any tips on how to do that? Cherri Pavuk "Cherri's Jubilee"