This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Luvgeschwindigkeit verschiedener Bootstypen.svg en VMG velocity made good for different kinds of sailing vessels Ordinary keelboat sailing dinghy Catamaran The later has much worse optimal angle towards the wind but reaches the target first anyway because he is significantly faster de Luvgeschwindigkeit verschiedener Bootstypen Konventionelle