Other Pages: 2013 Louis Vuitton Cup: Louis Vuitton Cup Results | LVC Final Race 7 Stats

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2013 America's Cup - ETNZ vs. Oracle Team USA:
Tacking Efficiency
Races 1-2 | Races 3-4 | Race 5 | Race 6
Race 7 | Race 8 | Race 9 | Race 10 | Explanation | CupStats Home

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Tacking Efficiency Explanation:

The Tacking graphs show the ability of each boat to maintain boatspeed as they change from one tack to another.  The timeframe shown is from ten seconds before to ten seconds after the boat is directly into the wind.

Entry speed for the maneuver is taken as boat speed recorded 10 seconds before head-to-wind (100% value), with the first graph shows speed through the tack as a percentage of that amount. 

An additional graph shows the actual boat speeds in knots, rather than as a percentage. 

A third graph for some of the races shows the change in wind angle, a measure of how quickly the boat is turning, over the same period of time.  The steeper the sides of the "V" in this plot, the faster the boat is turning.