Karpak had his first sailing experience when he was six with a Optimist. He started to regularly engage in sailing when was 12 years old in 1998 with the sailing club "Baltsail". In 1999 Karpak moved to the sailing club Kalevi Purjespordikool (KPSK). In 2003 he moved over to the Laser class. Since 2009 he has been sailing with the Finn class.
- "Deniss Karpak". London 2012. The London Organising Committee of the Olympic Games and Paralympic Games Limited. Retrieved 13 September 2012.
- "Deniss Karpak Bio, Stats, and Results". Olympics at Sports-Reference.com. Retrieved 2016-03-11.
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