The German-made submarine went missing on Wednesday while it was conducting a torpedo drill exercise in the waters north of Bali.
The Indonesian navy is searching for a missing submarine with 53 people aboard went missing Wednesday and is seeking help from neighboring Australia and Singapore in the search.
The German-made KRI Nanggala-402 submarine is conducting a torpedo drill exercise in the waters north of Bali but has not achieved the expected results, a naval spokesman said.
“We are still looking in the waters of Bali, 60 miles (96 km) from Bali, (for) 53 people,” military commander Hadi Tjahjanto told Reuters in a text message.
The military chief confirmed that assistance in locating the submarine and the missing crew members had been sought from Australia and Singapore. He said contact with the ship was lost at 4:30 am on Wednesday morning.
Representatives from the Australian and Singapore defense ministries did not immediately respond to a request for comment.
According to the website of the Indonesian Cabinet Secretariat, the 1,395-ton KRI Nanggala-402 was built in Germany in 1978, and has undergone two years of refitting in Korea and completed in 2012.
In the past, Indonesia operated a fleet of 12 submarines purchased from the Soviet Union to patrol the waters of its vast archipelago.
However, it currently has only a fleet of five, including two German-built Type 209 submarines and three newer Korean ones.
Indonesia has been looking to upgrade its defense capabilities, but some of its equipment is still in use, and there have been fatal crashes involving aging military transport planes in the country. Lately year.