orton ▁& ▁Company , ▁Inc . ▁ ▁“ P po ▁is ▁held ▁for ▁young ▁men ▁who ▁have ▁received ▁private ▁teaching ▁for ▁an ▁average ▁of ▁seven ▁to ▁eight ▁years . ▁The ▁main ▁part ▁of ▁this ▁rit ual ▁consists ▁of ▁exam ining ▁the ▁young ▁man ’ s ▁knowledge ▁of ▁navigation ▁techniques , ▁and ▁further ▁instruction ▁by ▁the ▁older ▁considered ▁to ▁be ▁the ▁most ▁skill ful ▁navig ator ▁on ▁the ▁island .” ▁ ▁S udo , ▁Ken - ichi ▁( 1 9 8 7 ), ▁“ N urt uring ▁in ▁Mat ril ine al ▁Society : ▁ ▁A ▁Case ▁Study ▁of ▁S ata wal ▁Island .” ▁ ▁IN : ▁I wa o ▁U sh ij ima ▁and ▁Ken - ichi ▁S udo ▁( Ed s .) ▁ ▁Cultural ▁Un iform ity ▁and ▁D iversity ▁in ▁Mic ron esia . ▁Sen ri ▁Eth n ological ▁Studies ▁No . ▁ 2 1 , ▁Os aka : ▁National ▁Museum ▁of ▁Eth n ology . ▁ ▁“ P wp wo ▁... ▁instruction ▁in ▁traditional ▁navigation .” ▁ ▁Good en ough , ▁Ward ▁and ▁H iro sh i ▁Sug ita ▁( 1 9 8 0 ), ▁Tru k ese - English ▁Dictionary . ▁Phil ade oph ia : ▁American ▁Philosoph ical ▁Society . ▁ ▁"... the ▁sacred ▁p wo ▁ceremony . ▁ ▁The ▁most ▁important ▁event ▁in ▁a ▁young ▁navig ator ' s ▁life , ▁it ▁not ▁only ▁marked ▁his ▁passage ▁into ▁man hood , ▁but ▁also ▁gained ▁him ▁entrance ▁to ▁a ▁select ▁and ▁privile ged ▁class ▁and ▁gave ▁him ▁the