Viski also won fourteen medals at the ICF Canoe Sprint World Championships with eleven golds (K-4 200 m: 1998, 1999, 2001, 2002, 2003; K-4 500 m: 1999, 2001, 2002, 2003; K-4 1000 m: 2001, 2005) and three bronzes (K-1 500 m: 2005, K-2 200 m: 2001, K-4 1000 m: 2002).