On 14 Oct, 15:28, (Steve Firth) wrote:

If one is motoring in a calm on a flat millpond then there is an
apparent wind equal to the speed of the boat from dead ahead. Hoist a
sail and you can make no use of that wind, agreed. However that only
applies if you maintain the same course. Now do what any sensible bloke
would do and adjust your course to make use of the wind as well as the
motor.

Umm. What happens to the apparent wind from dead ahead when you turn
and make "dead ahead" a different direction?

Ian