Jakarta, Indonesia (AP) —The Indonesian Navy is looking for a missing submarine north of Bali’s resort island, which has 53 people on board, the military said Wednesday.
Army chief Hadi Tjahjanto said he was participating in a training exercise when KRI Nanggala 402 was unable to answer the scheduled report call.
He said the submarine disappeared in the waters about 60 miles (95 kilometers) north of Bali.
Tjahjanto said the Navy had deployed ships to search the area and sought help from Singapore and Australia, which have submarine rescue vessels.
According to local media reports, the Navy believes the ship sank in a valley 700 meters (2,300 feet) deep. There was no immediate information as to why it went missing.
German-made submarines, which have been commissioned since the early 1980s, were rehearsing missile launch exercises on Thursday. Tjahjanto and other military leaders were to attend.
Indonesia currently has five submarines and plans to operate at least eight by 2024.
The country faces increasing challenges to recent maritime claims, including numerous incidents involving Chinese vessels near the Natuna Islands.