so ok ... i am missing something here?

1. do we assume that the polars going up to 22 kts wind are only using the 163? if not where do they change?

2. if at true wind speed of 6 ... true wind angle of 47.5 ... are we thinking that the tack is 95 degrees.

and then at 14 true, the tack is 86 degrees?

3. and then what is OPT VMG? to waypoint?

Also there seems to be a broken link re J/Boats