MPs and former Army Hasanuddin showed worries that Kri Nanggala submarine was sunk by the problem after the overhaul in Korea in the period of 2010-2012.

"The overhauling process in Korea not only changes components but also affects the structure of submarines, especially the torpedo system", former TB Hasanuddin, a member of the Defense, External and Pine Committee

Kri Nanggala submarine experiences over the overhaul, upgraded in Korea in the period of 2010-2012 to replace battery and engine, as well as equipped with passive-sonic navigation systems (Sonar) and fighting management

Submarine Kri Nanggala offshore in 2014. Photo: AP.

Senator Hasanuddin said this process consumed about US $ 75 million, adding that the torpedo trial of the cyngala ship after the upgrade was failed due to the launching hoses, causing three sailors to kill.

"I doubt the repair results led to errors that sank by Cyngala. This is a very unfortunate thing," Hasanuddin said, and urged the Indonesian Navy to stop operating submarine Kri Cakra in the same class with KRI

Hasanuddin emphasized Kri Nanggala began to dive with 53 people, more than the maximum allowed to be 38 crew members.

The Indonesian search force today discovered the submarine of Kri Nanggala breaking three and lying on the bottom of the sea off Bali at a depth of 838 m, the final diving site of only about 1.4 km.

The last time Kri Nanggala contacted the command of the command at 3:00 on April 21 to ask for a diving to dive into the sea, then lost contact completely from 4:30.

Officials have not released accurate explanations on the cause of the problem, but think that submarines may be lost, making the crew cannot bring the ship to emerge.