http://www.ua-net.eu/index.php?q=gallery&g2_GALLERYSID=901f0ddc1b73c5d9c6ec855fb88bd8a3 http://www.ua-net.eu/index.php?q=gallery&g2_itemId=33&g2_GALLERYSID=901f0ddc1b73c5d9c6ec855fb88bd8a3 33 Concept of an Underwater Acoustic Network