Although they made it back to port safely, the Japanese invaded Java only a few days later, and a Dutch officer disclosed the whereabouts of Opa and Oma to Japanese soldiers.
Kuigi nad jõudsid tervetena sadamasse, tungisid jaapanlased Jaavale ainult mõni päev hiljem, ja Hollandi ametnik teatas Jaapani sõduritele Opa ja Oma asupaiga.