Comments by "Mark Campbell" (@markcampbell7577) on "How Does A Sailboat Actually Work?" video.

  1. A sailboat can sail up to twice the speed of the wind. This is a geometric perfection that is impossible due imperfections in reality. We might say between wind speed and twice wind speed . 1.5 wind speed is a record sailing speed.
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  2. The keeling line is ahead of the sails instead of behind the sails. The keel should be under the mast not the boom. Normal keeling is stem to stern keel line. The stem being the deepest point of the hull and the stern is the shallowest point of the hull.
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