China's deep water submersible record bid in the Pacific
29 March 2012 Last updated at 22:19 BST
China's manned submersible "Jiaolong" will set off for a 7,000 metres deep dive in the Western Pacific in June.
Named after a mythical aquatic Chinese dragon, it will try to break Japan's deep diving record of more than 6,500 metres.
Marek Pruszewicz reports.