14/02/2012 Technical 0 (0) Peter Hinrichsen and Durk Zandstra have studied class rule 29. They are proposing a small change. Here’s their posting on this issue. 158 Flying Dutchman Keel line and stem Did you like this post? Click on a star to rate it! Submit Rating Average rating 0 / 5. Vote count: 0 No votes so far! Be the first to rate this post.