EDIT avec info que je viens de trouver sur le site de Poki, Poki:
FERRY BOAT TUNA TOMINI (new schedule since 11/2018)
“the connection to the north of Sulawesi”
ROUTE: GORONTALO – WAKAI
Tuesday, Friday, Sunday afternoon (approx. 17:00)
ROUTE: WAKAI – GORONTALO
Monday, Thursday, Saturday afternoon (approx. 18:30)