Indonesia’s KRI Nanggala 402 submarine went missing on 21 April after losing contact with land several hours beforehand. The vessel was later declared “sunk” and all of its 53 crew members pronounced dead.
A powerful but invisible phenomenon known as an “internal solitary wave” is being blamed for sinking the KRI Nanggala 402 submarine off the coast of Bali, according to Indonesian naval authorities.
An internal wave is a natural phenomenon caused by variations in water density which produce turbulent underwater movement in the ocean, often when a layer of warm water meets a cold one.
These waves are believed to cause intense vertical currents which are virtually invisible above the water, but are so powerful that they can actually “drag the sub vertically so it would sink faster than it should”, according to the submarine’s former commander Rear Admiral Muhammad Ali.
Rumours the Sub Was Shot
“Our suspicion falls on natural conditions. Because an internal solitary wave occurred at that time in the north of Bali,” Rear Admiral Ali argued this week, while dismissing speculations that the vessel could have been “shot” by a passing foreign vessel as “outrageous”.
He also said that a claim that the 33-berth vessel was overloaded when it sunk was not true, as Navy-operated subs usually carry teams of over 50 personnel despite having fewer berths available.
While an investigation into the sinking of the KRI Nanggala 402 is still ongoing, the images…