Hei tauira, i Poihākena he rerekētanga 200 ine (700 waewae) i waenga i ngā taunga GPS kua whirihoratia i te GDA (he mea hanga i runga i te WGS 84 paerewa huri noa) me te AGD (ka whakamahia mō te nuinga o ngā mahere paetata), he hapa nui kāore e whakaaetia mō ētahi taupānga, pēnei i te tirotiro, i te tauwāhi pae rānei mō te hopureo scuba.