Manado के मैप पर जल यातायात का मार्ग ASDP Amurang-Pananaru

This is a ferry connecting Sangihe island with the mainland. The ferry should go twice a week between Amurang harbour and Pananaru harbour. Cheap (current prices missing), but as usual with potential delays.
Originally this ferry should go further to more remote islands and the most northerly island of Indonesia (Marore), but this service seems to be scrapped nowadays - last proof of ferries going to Marore is from 2019.
Try to get the information before going to the harbor as the service is irregular (https://www.facebook.com/dinasperhubungankabminahasaselatan/)

Buy the ticket in the harbour (still cash)