Nkigice cyingenzi cyibikoresho mpuzamahanga, ubwikorezi bwo mu nyanja bufite ibyiza byingenzi mu gutwara abantu n'ibintu kandi bigira uruhare rudasubirwaho muri serivisi zitwara ibicuruzwa biva mu nyanja kuva mu Bushinwa kugera mu Bwongereza.
Ubwa mbere, ubwikorezi bwo gutwara ibicuruzwa mu nyanja burahendutse ugereranije nubundi buryo bwo gutwara.Ubwikorezi bwo gutwara ibicuruzwa mu nyanja burashobora gukorerwa mubice kandi bigapimwa, bityo bikagabanya ibiciro byubwikorezi.Byongeye kandi, ubwikorezi bwo gutwara ibicuruzwa mu nyanja bufite ibiciro bya lisansi no kubungabunga, nabyo bishobora kugabanywa muburyo butandukanye.