Sailors competing in the Women's Match Racing quickly put their frustrating wait for a breeze behind them as they moved courses to fight their way through the knockout Quarter Finals.
Light winds on day 12 forced the course to be moved out of Fremantle's Inner Harbour in search of better breeze on the open water out by Rous Head, much to the delight of the sailors.
"Today was more like real match racing," Anna Tunnicliffe (US1) said. "There were much steadier winds and it was so exciting to be out on a new course. It was a great day in the end."
After the four-hour delay, France's Claire Leroy, Lucy Macgregor (GBR), Russia's Ekaterina Skudina and Tunnicliffe quickly switched into race mode in the better wind conditions, skippering their boats to victory in their first two respective matches.
With the right side of the course seeming to have more consistent pressure, those who kept to the favoured side had little trouble keeping their lead.
Leroy led from start to finish over Sweden's Anna Kjellberg (SWE) in the opening match of Flight 91, Great Britain's Macgregor had little trouble against Mandy Mulder (NED), Skudina (RUS) held off Australia's Olivia Price and Tunnicliffe took victory over Nicky Souter (AUS).
A second win to each of the winning boats in the second flight of the day, put the pressure and excitement on Flight 93 with Kjellberg, Mulder, Price and Souter needing to win to keep their semi-final hopes alive.
Kjellberg gave it everything against Leroy from the prestart, maintaining her lead well downwind and rounding the leeward mark ahead. The Swedish skipper was still within attacking distance as Leroy rounded the last mark in front. With the two boats bow to bow heading for the finish line, Leroy managed to cross first to secure her place in Thursday's semi-final. "We're two steps closer to the trophy now," the French skipper said. "We are so happy to be going into the semi-finals."
With her World Championship title hopes on the line, Mulder pounced on Macgregor's lead as the British skipper struggled with her spinnaker. With Macgregor then picking up a penalty, Mulder crossed the finish line for her first victory.
Despite starting in good pressure, Price was unable to hold off her Russian opponent, with Skudina notching up her third victory to progress through to the semi-final.
Souter briefly kept Australia's title hopes alive, making things difficult for Tunnicliffe after she picked up a penalty early on. But the World #1 skipper managed to take the penalty and then the lead to notch up her third win of the day.
With just one semi-final place remaining Mulder and Macgregor were the only two boats racing in Flight 94, their fourth match up for the day.
Macgregor crossed ahead of Mulder early, covering her loosely up the second windward leg. Despite carrying some nice pressure down the course, Mulder couldn't get in front, making Macgregor the fourth and final boat through to the semis.
The knockout Quarter Final format saw four head-to-head matches between eight boats in the best of five flights. The first to claim three wins progressed through to the semi-finals.
Women's Match Racing is scheduled to move from the harbour to the Centre Course on Thursday from 12:00 local time.
Brazil's Robert Scheidt and Bruno Prada have extended their overall lead to six points thanks to two good results on Wednesday and their closest competitors failing to place well.
Scheidt and Prada won Race 7, the first for the day, 40 seconds clear and recovered from seventh early in Race 8 to finish third.
The Brazilians are now on 30 points, six points clear of Mark Mendelblatt and Brian Fatih (USA) who are second overall.
The Star fleet has two races on Friday before Saturday's Medal Race.
Mateusz Kusznierewicz and Dominik Zycki from Poland were ranked second on overall points after Tuesday's competition, but were forced to quit Wednesday's first race after receiving a second yellow flag.
In third place overall is the German duo, Robert Stanjek and Frithjof Kleen, on 43 points.
Dutchman Dorian van Rijsselberghe shares the overall lead with Israel's Nimrod Mashich after light winds plagued Centre Course on Wednesday. Two points behind the leaders is Piotr Myszka (POL) in third.
Light winds of less than 10 knots forced race officials to postpone race 5 in the Yellow fleet for almost an hour. A 70-degree wind shift then forced the race to be abandoned after it had started.
Once racing resumed it was Spain's Ivan Pastor who took the initial lead with Julien Bontemps (FRA), Jon Paul Tobin (NZL), Mashich and Joao Rodrigues (POR) following in his wake. But in a sharp changeover, Rodrigues overtook while Andreas Cariolou (CYP) also caught up. The race ended with a win for Rodrigues, with Pastor second and Cariolou third while Tuesday's favourite Mashich finished fourth.
World #8 and Greece's only Men's RS:X competitor, Byron Kokalanis, immediately took charge in the Blue fleet with a clear lead ahead of Myszka and van Rijsselberghe in 11 knot winds. But when it seemed as though Kokalanis was bound for a win, Shahar Zubari (ISR) proved his World #3 ranking, cutting in from the outside to join the leading three.
There was a cluster of sailors on the final leg of the race, so much so that it was hard to tell who out of Zubari, van Rijsselberghe, Myszka, Koklanis, Pierre le Coq (FRA) and Elliot Carney (GBR) was leading. But van Rijsselberghe emerged to take first place, closely followed by Myszka in second and Zubari third.
It was a long day on the water for the 49er and race management teams as the wind did not cooperate on the Owen course compared to the other courses on the 2011 Worlds track. After a two hour on-the-water postponement, the Race Committee was finally able to get the first fleet off for 2 races in 12-18 knots of breeze that was oscillating, but had settled enough to get fair races.
The patience of the sailors and race committee had paid off and two good races were held for the yellow fleet with Erik Heil and Thomas Ploessel (GER) winning the first race and Dave Evans and Ed Powys (GBR) crossing first for the second. Manu Dyen and Stephane Christidis (FRA) sailed a solid day with a 5-4 in the yellow fleet capitalizing on the shifting conditions and move into second overall. It was tricky conditions with the lead changing several times over the multi-lap race and teams having to call the right tactics as they were tucked up against the beach off Owen course.
After two races, the yellow fleet was sent in and it was the blue fleets turn. The first race started in 12 knots and was won by John Pink and Rick Peacock (GBR), a hard fought battle that they never gave up. The wind then began to drop and shift and it looked like they might not get a race off, but patience again proved to win the day and the last race was off with the Phillips brothers (AUS) taking the win on the last upwind leg to the finish and the cheers of the local spectator fleet.
Finals begin tomorrow with the gold fleet for the top 25 and the remaining split between silver and bronze.
While defending world champion Tom Slingsby (AUS) was setting the pace with his fourth win on the third day of Laser racing, the rest of the field was jockeying for positions in the all-important Gold fleet. Slingsby won and then had a poor ninth when the wind swung from the right to the left, but the ninth is discarded for the moment as he leads the fleet with a net 10 points.
Great Britain's Paul Goodison is seven points in arrears with a sixth and a first on Wednesday to maintain second position, while Germany's Simon Groteluschen held on to third place with 19 points because of identical finishes to Goodison.
Australian Ashley Brunning moved up six positions to fourth while Austrian Andreas Geritzer was one of the biggest movers of the day, rising 11 places to fifth on the back of a first and a fourth.
France's Jean Baptiste Bernaz slipped one position to sixth and Sweden's Johan Wigforss was also down one to seventh. Both had seconds with a discard.
Briton Nick Thompson dropped to eighth from fourth and Croatia's Tonci Stipanovic lifted five placings to ninth with a pair of fourths.
The fleets are now split into Gold, Silver and Bronze with the first races on Thursday, a lay day on Friday and final races on Saturday, ahead of Sunday's Medal Race.
While Races 5 and 6 of the Women's 470 competition welcomed new faces to the winner's circle on Wednesday, the fleet's overall rankings showed little change.
Spain's Tara Pacheco and Berta Betanzos maintained their hold on the number one position, with Japan's Ai Kondo and Tabata Wakako retaining second place.
Gil Cohen and Vered Buskila (ISR) took out first place in Race 5, with the World #13 duo leading from the start. Kondo and Tabato tried hard but were unable to catch up and finished second.
The real battle was fought further back in the field. In the hotly contested clash between several boats for third place, Tarp Pacheco and Berta Betanzos (ESP) narrowly beat France's Ingrid Petitjean and Nadege Douroux.
The race was marked with two general recalls and three Black Flag disqualifications.
Race 6 was anybody's game until Jo Aleh and Olivia Powrie (NZL) took the lead at the last mark and held it over the line.
Tina Mrak and Teja Cerne (SLO) were second over the line in Race 6, closely followed by Hannah Mills and Saskia Clark (GBR).
The Women's 470 fleet has a reserve day on Thursday, with races 7 and 8 scheduled for Friday, 16 December.
The Perth 2011 ISAF Sailing World Championships website will bring you results, tracking, live updates and all the latest news both on and off the water.