Missing Indonesian submarine may have sunk too deep to reach

The Indonesian Navy submarine KRI Nanggala takes part in a drill off Cilegon, Indonesia, in this Tuesday, Oct. 3, 2017 photo. Indonesia’s navy is searching for the KRI Nanggala submarine that went missing north of the resort island of Bali with a number of people on board, the military said Wednesday, April 21, 2021. (AP Photo)

Indonesian navy ships are searching for a submarine that is likely to have sunk too deep to retrieve, making survival chances for the 53 people on board slim.

The diesel-powered KRI Nanggala 402 was participating in a training exercise on Wednesday when it missed a scheduled reporting call.