VietNamNet Bridge – The debut of a new mini-submarine, developed by Nguyen Quoc Hoa with his own money, has breathed new life into the dream of a made-in-Vietnam submarine.

 VietNamNet Bridge – The first Vietnam-made mini-submarines have recently presented themselves before the public. However, this is not a complete first for the nation. Vietnam did set out to build a submarine half a century ago.

 VietNamNet Bridge – While scientists have repeatedly urged putting the Truong Sa mini submarine into experiment at sea, appropriate authorities still don’t know how to proceed.

 VietNamNet Bridge - At the latest test in a tank in the afternoon of March 7, the homemade submarine named Truong Sa (Spratly) of an entrepreneur in Thai Binh province could still dive and resurface well in the presence of many people.

 VietNamNet Bridge - Mr. Nguyen Quoc Hoa, the boss of a print company in Thai Binh province, has stated to have successfully test his submarine, named Truong Sa (Spratly Islands).

 VietNamNet Bridge – Phan Boi Tran, 61, a composites expert, was preparing to test his mini submarine in a swimming pool in 2010, when he heard someone wondering if the vessel would come back up again.