Hong Kong's top sailors will use next week's Hong Kong Open Windsurfing Championships as the final tune-up for the 2006 Asian Games in Doha, Qatar. Sponsored by FedEx this year, the annual competition is scheduled to take place from next Wednesday until October 31 off Tung Wan, Cheung Chau. It will be held alongside the RS:X Asian Championships. There are five major classes at next week's competition - RS:X men and women, International Mistral Class Organisation (IMCO) men's heavy and lightweight, as well as IMCO women. RS:X will replace the traditional Mistral class at the 2008 Beijing Olympics. With the Asian Games due to be held in December, Hong Kong's windsurfers, including Ho Chi-ho, Vicky Chan Wai-kei and Chan King-yin, will only compete in the Mistral class of the Hong Kong Open. However, windsurfers from Australia, China, Chinese Taipei, Japan, South Korea and Thailand are expected to battle for top honours in the RS:X Asian Championships to improve their rankings and book a place in the Beijing Olympics. Ho and his teammates have all vowed to try their best in the Hong Kong Open. Atlanta Olympic gold medallist Lee Lai-shan will not compete in the Asian Championships but her husband, Sam Wong Tak-sum, will line up on a new board designed by him. Ho and Chan Wai-kei will be sponsored by FedEx, it was announced last week. What is RS:X? RS:X is a windsurfing discipline that was selected by the International Sailing Federation to replace the traditional Mistral One Design class at the 2008 Beijing Olympics. It is similar to formula windsurfing in that the equipment used is designed to allow good competition in low and moderate wind conditions. RS:X equipment includes a board with a daggerboard, and a specific-size sail. The board was designed by Jean Bouldoires, and is 2.86 metres long and 9.3m wide.