VietNamNet Bridge – The mini-submarine named Truong Sa of a businessman in Thai binh Province was tested at sea on May 30, after the successful trials in a tank and a lake. However the test had to stop because the propeller was broken.

VietNamNet Bridge – The Ministry of Science and Technology has just affirmed that it is prepared to grant a license for putting the Truong Sa sub into testing in the open sea.

 VietNamNet Bridge – Having found the Truong Sa submarine’s path to the open sea to be too bumpy, it’s inventor has officially decided to postpone his testing plan.

 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 – Nguyen Quoc Hoa, father of the Truong Sa submarine, says everything is ready for his vessel to be tested at sea.

 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.

After about two hours of testing in a lake in a private industrial zone in Thai Binh City, the mini submarine named Truong Sa, manufactured by a local businessman, could dive and resurface at the witness of hundreds of people.