VMG (velocity made good) for different kinds of sailing vessels: A: Ordinary keelboat; B: sailing dinghy; C: Catamaran. The later has a much worse optimal angle towards the wind, but reaches the target first anyway, because he is significantly faster.
Own work, nach einem Diagramm in Schult, Joachim; Segler-Lexikon; 13. Auflage 2008; ISBN 978-3-7688-1041-8; Stichwort "Luvgeschwindigkeit"
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