🌊🧽🔊

#sonar #submarine #underwater sound #echo location #hydrophone #detection

📡📶🌊

#sonar #hydrophone #underwater sensor #acoustic detection #marine sensor #subsea communication #underwater telemetry

سابسکرایبsᴜʙsᴄʀɪʙᴇ

#سابسکرایب #sub #sonar #hydrophone #world war ii #under #italian sandwich #cuban sandwich #stand-in #thermocline

👂〰️🛦️

#hydrophone #passive sonar #underwater listening #submarine sounds #acoustic detection #locating submarine