Has a Submarine Ever Imploded?

ARA San Juan (S-42) was a TR-1700-class diesel-electric submarine in service with the Submarine Force of the Argentine Navy from 1986 to 2017. ... The submarine's imploded wreckage was strewn over an area of 8,000 square metres (86,000 sq ft).

What would cause a submarine to implode?

What is crush depth? The name is foreboding and fairly self-explanatory; it's when the submarine goes so deep the water pressure crushes it, causing an implosion. The crush depth of most submarines is classified, but it's likely to be more than 400 metres.

What depth will a submarine implode?

It's generally accepted that the maximum depth (depth of implosion or collapse) is about 1.5 or 2 times deeper. The latest open literature says that a US Los Angeles-class test depth is 450m (1,500 ft), suggesting a maximum depth of 675–900m (2,250–3,000 ft).