Nā ngā waka whakawehenga mōhio, ka hanga ngā kaiwhakamahi āhuarangi hei whakawehea i te rāngai o ngā mōhio iti me te pūmau. E āhei ana enei waka i roto i ngā tīrikē ki ngā tūranga motokā, ā, kua tirotirohia kia whai take ngā hiranga whakawehenga. Ko te whakapae i te hanga o ngā umu whakawehenga, ko te whakarite i ngā momo whenua hei whakaae me ngā mōhio, nā reira ka whakamahia ngā momo whenua pēnei i te porohita whero, te aramoana, rānei ko ngā pūmotu ahumahi. Ka whakauruhia ki raro i ēnei, ngā tohu haumaru, e hiahiatia ana ngā pūtake whakataki wehe, ngā whareaha ā-wāhi whakamutunga, me ngā rākau whakakotahi i te kawe i te wehe ki te tahua. He ture whakapae nui ngā tikanga mō te mahi, hei tautoko i te whakaaetanga i ngā tikanga haumaru me ngā tikanga tiaki i te taiao. Kia tino nui ake te mahi o ngā waka whakawehenga mōhio hei whakangungu i te rānana, hei whakawehea i ngā mōhio puta noa i ngā whenua rerekē me ngā rāngai.