Were naval-airship hydrophones an early form of dipping sonar?
Short answerYes. They were early dipping-sonar experiments, though the method was not always successful.
NotesHydrophones used from naval airships were an early form of dipping sonar. The method was not always successful, an important qualification when tracing a technology's origins through experimental service. These experiments link First World War naval aviation with later anti-submarine sensing methods.