<prompt> Bhala okuqhubekayo kwalesi sigaba - Schmidt, owawina zonke ezintathu ICF Canoe Sprint World Championships abesifazane kayaking imicimbi ngo-1981, 1982, 1983, 1985  <response>: , no-1987, wayethandwa kakhulu kulo mcimbi kodwa waphazanyiswa uGesheva owaqeda ngokushesha. 