Ki te whiwhi i te hua nui rawa atu me te pūmau, kua hangaia e Shunzhao he maramara whakahaere taumata mo o ratau waka diesel. He whakatenetene nui ki te whakawhiti kararehe i runga i te 5000 ki te 10000 kiwemi, e hāngai ana ki te motokorea ā-wāhanga me te tīmatanga whakamahi. Ko te whakawhiti kararehe, ko ngā kaiwhakarite ahurea, ngnahau me ngā kaiwhakarite kararehe hoki e hāngai ana hei mahi iti. He mea nui anō ki te whakaaro i te rāhui ngnahau kia tiakina ai te waenganui o te ngnahau me te pūnaha ahuatanga. Me tiakina anō te pūnaha whakanuitanga i te wāhi o te wai, i ngā pūtake, i te rātā me te pū wai hei whai i te huarahi pai. Me tiakina anō ngā pūtau i te mea nui o te whakapae me te whakawhiti i te wai pūtau i te wā e hia nei. Me whakawhiti anō ngā raea, ā, me te tirotiro i ngā paepae hei whakaae i te whakapae raea, ka whakawhaitia hoki i te wā. Me whakahaere anō i te pūnana me te takirua i te wā pai. Ki te whai ake i te maramara whakahaere, ka taea te whakaora i ngā tuhinga whakahaere e mahia ana i ia waka diesel ki roto i te marae whakahaere a Shunzhao.