March 3, 2014 19:38
Tony - Before reading your reply, I tried out SailTimer C E for my iPad I (no GPS built-in). It would not connect to the UDP output of the Miniplex2-wifi from ShipModul and even after several emails with ST it was not obvious what was wrong. So I stopped pursuing that option for generating polars for my boat.
But, and relevant to MacENC (finally!), it is fairly easy to generate your polars just within MacENC. In the Track panel, you can record SOG, COG, true heading and true wind speed/direction. So just let MacENC record this info at frequent intervals (even 1 Hz if you want) and then sail as many different wind angles and wind speeds as you can. You can collect the data over multiple days/trips. Then save those files as CVS files and combine them all together in an Excel file. You can then sort the data so the rows are the different angles and the columns are the different wind speeds, with the SOG values as the data in the array. Now you can average the SOG's for similar wind directions and speeds. This will generate the polars you need, which can then be entered into the "polar" option in SailTimer in MacENC.
This does require some familiarity with Excel, but is pretty easy, and I would be happy to help if you decide to collect your data. My guess from playing with the SailTimer app is that it would not have been much easier there.
A further advantage for you is that there is no problem using your newer data protocol, NEMA 2000.
Eric
But, and relevant to MacENC (finally!), it is fairly easy to generate your polars just within MacENC. In the Track panel, you can record SOG, COG, true heading and true wind speed/direction. So just let MacENC record this info at frequent intervals (even 1 Hz if you want) and then sail as many different wind angles and wind speeds as you can. You can collect the data over multiple days/trips. Then save those files as CVS files and combine them all together in an Excel file. You can then sort the data so the rows are the different angles and the columns are the different wind speeds, with the SOG values as the data in the array. Now you can average the SOG's for similar wind directions and speeds. This will generate the polars you need, which can then be entered into the "polar" option in SailTimer in MacENC.
This does require some familiarity with Excel, but is pretty easy, and I would be happy to help if you decide to collect your data. My guess from playing with the SailTimer app is that it would not have been much easier there.
A further advantage for you is that there is no problem using your newer data protocol, NEMA 2000.
Eric