Infographic: All about Indonesia’s missing submarine Nanggala is a German-built vessel that has been in service since 1981 Published: April 22, 2021 19:58 Gulf News Indonesian Navy submarine KRI Alugoro sails during a search for KRI Nanggala, another submarine that went missing while participating in a training exercise on Wednesday, in the waters off Bali Island, Indonesia, Thursday, April 22, 2021. Image Credit: AP Image Credit: Vijith Pulikkal/Gulf News | Graphic News