Kees Verruijt wrote:


The ST40 computes true wind angle/speed when it knows speed thru water,
not when it knows speed over ground.

I did fear this was the case. Why do they make the distinction? Surely
if one is not available, but the other is, it could use boat speed over
ground to make the same computation.


The solution is simple (but probably not what you want to hear): install
an STx0 speed/log instrument.

You're right, I didn't want to hear this, as I know no way of making my
GPS output speed over water, rather than speed over ground, and non GPS
based speed/log information is affected by tidal flows, etc.


-- Kees

Thanks for you reply.

Who.