Riachuelo Class submarine enters final assembly phase in Brazil

Image provided by Brazil's Presidency, shows Brazilian President Michel Temer (C), heading the launching ceremony for the final assembly phase of the Riachuelo Class submarine, at the Shipyard and Naval Base (SNB) of Itaguai, in the municipality of Itaguai, Brazil, on Feb. 20, 2018. (Xinhua/Valdenio Vieira/Brazilian Presidency)

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