I got into sailing for a bit (poor man’s sailing in a 16’ sailing kayak), and it took a lot of mental processing for me to realize how the keel (or a form of hu

I got into sailing for a bit (poor man’s sailing in a 16’ sailing kayak), and it took a lot of mental processing for me to realize how the keel (or a form of hull acting as a keel) is essential for sailing upwind. The physics are really interesting.