<prompt> Ngwala go tšwela pele bakeng sa serapa se - Vaskuti gape o thopile dimetale tše šupago go ICF Canoe Sprint World Championships ka gauta e tshelelago C-2 500 m: 1977, 1978, 1981, 1985  <response>: 1986, C-2 1000 m: 1986 le bronze e tee C-2 500 m: 1982. 