I have a sail that came with a Trac 18 and the sail is bigger than the mast and looks to be brand new it has 18 2 on it and nothing else i dont have the measurments in front of me but I know it's 31+ feet long boomless has composite black majic battens is solid white dacron and thouhgt it could be a Nacra 18 square but cant find much about them. I know it's not a P18-2 cause the length.This going to be forsale once it is found out what it is. It's a beautiful sail that some one would want .Also got a Trac 16 sail with it that pretty much new but no Trac 18 sail.Any help on the sail info greatly appreciated.Thanks.