April 2019 DiscoveryContentsVolume 62 • Number 414 Amazing New ViewsScientists aboard Schmidt Ocean Institute’s research vessel Falkor discovered and explored a hydrothermal ? eld at 2,000m depth in the Gulf of California.Comms20 Sound OffInside Dolphin, enabling technology for acoustic systems.By Justin Manley, Just Innovation, Michael Murphree & Greg Folts, both with QinetiQ North America26Defense (On the Cover)Nekton Oxford Deep Ocean Research Institute26 Covert CommsTech that has helped to achieve world ? rsts in ocean exploration broadcasting could also provide the answer for covert operations in the defense realm, where communications need to go unheard. By Ioseba Tena, SonardyneOffshore Renewables40 Break a WaveA new wave generated power device promises to deliver energy at utility scale. How? It creates its own waves.By Greg TrauthweinSubsea Engineering4048 By-pass Super Fast SurfWECWhen a troublesome pipeline beset with wax issues escalated into a blockage, new North Sea independent Chrysaor and Subsea 7 nimbly dealt with it, installing a 26km 48bypass pipeline in just eight months – despite facing multiple issues on the way.By Elaine Maslin4 Editor’s Note6 Authors in this Edition8 Tech: New & Notable10 Government Update: AIS Data34 Defense: Brazilian Submarines38 Defense: French Frigate Tech54 Product: Comms, Telemetry, Data Processing58 Product: Beacons, Flashers, Trackers63 Classi? ed64 Advertisers IndexChrysaor and Subsea 7 May 20192 MTRMTR #4 (1-17).indd 2 4/26/2019 9:48:36 AM