The deepest a submersible of any kind has ever descended, the BBC reported in May 2019, was 10,927 meters or approximately ...

The dive shattered the previous depth record for the Atlantic, which was held by the Chinese Jiaoling submarine. That sub has explored depths below 7,000 meters, and is still operational today.

But they declined to give further details. During the incident the main depth gauge on the submarine failed as it was diving, a defence source confirmed, but a secondary depth gauge was still working.

In 2003, the HMAS Dechaineux, a Collins-class submarine, nearly sank after a seawater pipe burst near its maximum diving depth, highlighting significant design and operational flaws. What You ...

The Royal Malaysian Navy's (RMN) submarine, KD Tun Razak, is in excellent condition and capable of operating effectively, ...