Day one began in 6 knots of breeze with two separate courses for qualifying. The wind dropped during the first race, and then dropped below the class minimum of 4 knots after the race was complete. The Race Committee waited with the sailors for 1 hour before it began to slowly fill. Race 2 began in 8 knots and slowly built to a nice 15 by the end of race 4. Course B finished around 18:30 with Course A in about 45 minutes later.
With such different conditions, the light air teams were up near the top for the first two races while the heavier teams were flying during the last two. Those who were able to excel in both conditions are near the top of the results board for day one. Argentines GAINZA and VILLAMBROSA posted a 1,2,1,1 in the yellow/blue fleet while Pepe BETTINI and Matias KELLER (ARG) posted a 1,2,3,1. They were leading race 2 and mistakenly left the course at the weather mark thinking they were over. Bow numbers were posted for those OCS and BETTINI and KELLER thought it was their sail number posted. But they realized their mistake, came back to the weather mark and finished third in the race.