Second time out on the S89 but not as much wind as the first. First outing (28/10/2007) I got 54kph on my Navman but on this day I got only 50kph.
I forgot to reset the Navi GT-11 before starting. Max display (29.38 knots) therefore showed previous session from Dahab. Max. GPS (display) should be 28.65 knots (based on Doppler max in software).
Tech Details: Navi GT-11 v1.62 (B1024F), GPSAR Pro v1.2, Non-Doppler.