Formula windsurfing aims at top performance from 8 to 20+ knots upwind and downwind. The board is 100 cm wide, 230 cm long, the fin is 70 cm long, and the sail is about 11 sq.meter.
Track shape overview
Upwind and Downwind Analysis
Typical behaviors over 2000 meters
Typical values over 2000 meters
|Name||Date||Wind direction||Tack||Speed||VMG||Angle to wind||Length||Duration|
|Sun Aug 08 05:01:09 CEST 2004||18||Port||14,417||6,875||62||2 150,869||290,000|
|Sun Aug 08 04:51:47 CEST 2004||18||Port||14,093||8,095||55||2 001,006||276,000|
|Sun Aug 08 04:45:03 CEST 2004||18||Starboard||14,182||6,774||62||2 028,268||278,000|
|Sun Aug 08 05:17:58 CEST 2004||18||Port||20,490||-10,960||122||2 076,617||197,000|
|Sun Aug 08 05:23:05 CEST 2004||18||Starboard||19,367||-9,072||118||2 012,624||202,000|
|Sun Aug 08 05:34:21 CEST 2004||18||Port||21,506||-10,025||116||2 013,608||182,000|
The apparent wind is of course very front oriented. Its speed ranges from 27 to 29 knots, with a 18 real wind.
As you can see here, the apparent wind speed can be lower than real wind (16 knots compared to 18), and moreover to board's speed (about 22 knots): less wind in your face than if your was standing on beach!
Another important point here with windsurfing is that apparent wind always comes in front of you, even when going downwind. The apparent direction is somehow comparable to the one of upwind course, but with less power in the sail.
The Apparent wind direction changes radically from one tack to the other (much more than on the upwind example)
5 best 500 meter (at least) average = 43,8km/h [23,7Knots]500 meter run n°1 = 45,2km/h [24,4Knots] (527,2 m. in 42,0 s.)
5 best 1852 meter (at least) average = 41,4km/h [22,4Knots]1852 meter run n°1 = 43,3km/h [23,4Knots] (1 874,9 m. in 156,0 s.)
5 best 3600 second (at least) average = 11,4km/h [6,1Knots]3600 second run n°1 = 31,3km/h [16,9Knots] (31 306,6 m. in 3 601,0 s.)