Good, so you are familiar with this process. If you are using Windows there is a program that is good for recording nmea0183 data and turning it into polars. It is programmed by Patrick and called "Polauto". The other alternative is to simply use the Polar_pi plugin for recording, or to use the VDR plugin to record
it all to a file and then process it.
See this thread http://www.cruisersforum.com/forums/...ed-187729.html
which is the result of being on the Marblehead to Halifax
with a full set of beautifully detailed VPP Polars, with various sail sets, but it assumed an asym spinnaker
that would go downwind at >150 AWA, which ours did not. Since the VPP Polars are "idealized" anyway, we are going to record
I haven't done this yet, but have thought about it. While you are recording polars, use your log book to write down the start & end of recording date/times with a description of sea conditions, bottom conditions, current, sail sets & details, average wind speed etc. This will help you get good polars. Try to pick consistent conditions.
Perhaps you've done this before?
If you attach your polar file below (under Go advanced) (rename it to doc, if it is too big) I will look at it and show you how to fix it for weather
I recently had to convert the VPP polars in Maxsea format to OpenCPN
. It was not difficult.
Do you know about Tactics_pi plugin?