<prompt> Andika mwendelezo wa fungu hili - Wichmann alipata mafanikio zaidi katika Mashindano ya Dunia ya ICF ya Canoe Sprint, akishinda jumla ya medali 18. Hii ilijumuisha dhahabu tisa C-1 1000 m: 1979, C-1 10000 m: 1970, 1971, 1974, 1977, 1979, 1981, 1982; C-2 1000 m: 1971, fedha nne C-1 500: 1971, C-1 1000 m: 1966, 1978; C-2 1000 m: 1970, na shaba tano C-1 1000 m: 1973, 1975  <response>: ; C-1 10000 m: 1973, 1983; C-2 1000 m: 1973. 