Engine noise and vibrations... Two of the easiest ways to find a submarine. New revolutionary Swedish technology, in joint venture with @damen, is exclusively available for the replacement of the Walrus class. To stay submerged and undetected for weeks at a time. #NLnavybuilders pic.twitter.com/7Nyq1ToIzq— SAABDAMEN (@SAAB_DAMEN) November 19, 2019
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