Umshini ufanelekile ukuba nomthelela emuva naphambili, izingxenye zezicathulo kwesokunxele nakwesokudla ezifana nezicathulo zezemidlalo, izicathulo zethenisi, izicathulo ze-dragon boat nezinye izicathulo zesikhumba, okwenza ukuthi umshini unemisebenzi emithathu.