CHAN CHI-KWONG picked the ideal place to have an accident yesterday - right in front of his rescuers. Mr Chan 40, was driving along Kennedy Town Praya, Western, to deliver clothes to Central at 2.20 pm when he lost control of his van at the junction of Smithfield Road. The van crashed through a road barrier and, with Mr Chan unconscious inside, plunged headlong into the water - right opposite Kennedy Town Fire Station. Nine-year-old Cheung Kwok-kin, who was fishing at the waterfront, was injured as he dived out of the way. Firemen witnessed the accident and two of them, Leung Kam-fat, who has been a fireman for less than a year, and Hung Chong-kiu, with 14 years' experience, immediately pulled off their jackets and boots and dived into the water. They managed to open the van door and release Mr Chan before the vehicle sank into the two-metre-deep water. Last night senior station officer Ngan Wai-hong said the driver was ''very, very lucky''. ''We heard a large crash and the firemen rushed out to see what had happened. It was all over inside a minute. The firemen rushed out in 15 seconds and it took 45 seconds to get him out.'' The van, with a wheel missing and dented bodywork, was recovered by the Electrical and Mechanical Services Department.