"And to prove the technical capabilities of this diving system, which we believe is now the deepest operational ... which was held by the Chinese Jiaoling submarine. That sub has explored depths ...

All were decommissioned by 1996, but they left a legacy in submarine technology and even ... were reported to be the world's fastest and deepest diving of their era and could reach a top speed ...

deep in the Sea of Norway—the deepest dive ever by an ... sailors and officers who died in Soviet submarine accidents during the Cold War. The deep-diving Komsomlets, meanwhile, had sunk 1,680 ...