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Severne NZ Windsurfing Slalom nationals and Oceanic Slalom Championships day 3 results

The results for day 3 are unremarkedly similar to day 2 as the wind failed to kick in sufficiently consistently enough to run any races. A fickle NE teased the sailors with everyone rigging big (7m - 8.5m) and their biggest boards. Although a number managed to make it onto the course and climb up to the start line the wind never consistently reached the bottom marks so after several delays and a southerly change which also failed to kick in strongly enough the plug was pulled on the days racing. A competition was held involving heaving the weights that the previous day were used to anchor rigs against the winds, followed by a BBQ. Saturday is the final day for racing, although Sunday is tagged as a backup day if the race committee decide another day is required to get a result. For those interested attached below is a plot of speed and heart-rate for a typical race ...

The graph shows 3 phases (each about 1/3 of the graph
1. the launch from the club house and climb up the course to the start area - each of these is an upwind leg (zig-zag) with a gybe (turn) at each end. Board speed and heart rate are lower as this is sailing upwind (towards the direction the wind is coming from).
2. the middle third is time spent sailing back and forth above the start boat waiting for the start of the heat (other races are being started at this time). Speed and heart rate are lower as this time is spent cruising and preparing to position for the start sequence.
3. the final third shows the race itself, each 'spike' is one leg of the race, each dip is the rounding of the bouy (slower), between the second and third legs, at the second mark, the sailor fell off and restarted. The even legs show slightly higher speed showing that the wind was not directly down the course but had a slight bias , giving one direction (zag) a higher speed. The final 'spike' shows a heart rate peak which indicates that the final leg was also a 'race to the finish' with another sailor.

The speed is quite low, which is partly a reflection on the sailor but also attributable to the fact that the winds were very strong which meant that sailing fast and remaining in control on choppy water was difficult. Speeds at other times were normally up over 50kph. The theoretical safe max heart rate for this sailor is 160bpm, so 150bpm is good exercise! Course length was about 2.7km but a total of over 9km was sailed to complete the race.

This data was collected using a VXSport device developed in Lower Hutt.

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