Sonar Waves Substellar

„The properties of the sea which makes submarining so dangerous, also make communication with submarines extremely difficult. All contact with the outside world happens here, the radio room, perhaps the most classified place on the boat. Secret because of the sophisticated cryptoctrphic equipment used to decode messages and from onshore command centers.“

http://www.iftaf.org/transpeditionen.php

Fotos: LisbethKovacic