Raw Data For Polar Plot Generation
Data Collected
    Boat Speed (BS)
    Speed Over Ground (SOG)
    Apparent Wind Speed (AWS)
    Apparent Wind Angle (AWA)
    True Wind Speed (TWS)
    True Wind Angle (TWA)
    Rudder Angle (RA)
    Sail in use
Data I would like to collect
     Heal Angle
     
Backstay setting and tension
     Outhaul Setting
     Jib Sheet Setting
     Staysail Sheet Setting
     Bottom/Prop Condition


July 17, 2010
Sailing from King Harbor to Isthmus, Catalina, Departed King Harbor at 0815 and motored to the R10 bouy, note that seas were very flat (2 foot swell) on the beam, long period swell.
Hull and prop are clean
Backstay tension was in about 2" ABOVE the black tape mark (i.e. light air tension)
Boat Speed Speed Over Ground Apparent Wind Speed Apparent Wind Angle P/S True Wind Speed True Wind Angle Sails Rudder
5.2 5.5 11 50 S 8.9 80 3 2-5
4.6 4.6 10 50 S 7.8 80 3 2-5
4.0 4.0 11 40 S 8.2 50 3 2-5
5.9 6.2 12 50 S 9.3 80 3 2-5
6.3 6.6 11 58 S 10 82 3 2-5
6.4 6.7 13 51 S 11 80 3 2-5
6.5 6.7 14 53 S 11 80 3 2-5
Point up for 50 degrees apparent return
7.1 7.6 15 57 S 13 85 3 2-5
7.2 7.4 17 48 S 13 78 3 2-5
Note: Stbd Upper needs tightened 1 turn, running backstay is at tension, backstay is above black mark, need to put a numbered guide for future reference and collect that information for this chart. Outhaul on Main is now tight
7.5 7.8 17 51 S 13 80 3 2-5
7.6 7.9 17 53 S 14 85 3 2-5
7.8 8.1 18 61 S 15 89 3 2-5
Try dropping main, getting quite a bit of heel, saloon ports above water (barely) need clinometer, perhaps an electronic one to aid in collecting data? Trimmed main out until leading edge of main is starting to just barely backwind during boat motion.
7.7 8.2 18 63 s 17 90 3 2-5
Pulled in the main a bit to stop the occasional motion of the leading edge of the main
7.7 8.1 18 62 S 17 86 3 2-5
Not much change but more heel, back to where we were prior to last adjustment
7.9 8.2 18 69 S 16 96 3 2-5
8.0 8.3 19 61 S 16 95 3 5
Course change of 15 degrees to port, retune vessel for flat
7.6 7.9 15 81 S 15 119 3 1-2