The submarine had a maximum surface speed of 17.
It was a participant of the international naval exercise and conducted a with.
The Indonesia submarine that went missing this week has been found shattered into several pieces deep in the ocean, the Indonesian military said Sunday.
Condolences to the families of the 53 men lost Debris believed to be from the missing Indonesian navy submarine has been found, Indonesian Navy Chief of Staff Yudo Margono told a news conference Saturday.
An American reconnaissance plane, a P-8 Poseidon, landed early on Saturday and had been set to join the search, along with 20 Indonesian ships, a sonar-equipped Australian warship and four Indonesian aircraft.
The navy said it was waiting on the arrival of two ships, including a vessel sent by China, that are equipped to handle deep-sea salvage operations.