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The first submarine, named Ha Noi, will now be transported to Viet Nam.
Viet Nam ordered six submarines, dubbed “black holes in the ocean” in 2009 during Prime Minister Nguyen Tan Dung’s official visit to Russia.
The Project 636 class boats displace 3,100 tons, reach speeds of 20 knots, can dive to 300 meters and carry crews of 52 people, the RIA Novosti reported Thursday.