The Union Internationale Motonautique (UIM) is the international governing body of powerboating, based in the Principality of Monaco. It was founded in 1922, in Belgium, as the Union Internationale du Yachting Automobile. Member nations from 12 in 1927 to 60 in 2017. The UIM has a membership of more than fifty national authorities, including: 59 Nations in 2022: More information...
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