The First World War Electric Eel towed sonar

What was the First World War history of towed anti-submarine sonar?

Harvey Hayes's Electric Eel demonstrated the basic two-cable hydrophone idea, but the work was dropped after 1918 and not revived seriously until the 1960s.

The Electric Eel used two cables carrying a dozen hydrophones each and was abandoned after the First World War rather than developed continuously. Its concept anticipated later towed arrays, although the absence of modern signal-processing computers would have limited performance and required alternative methods of interpreting the contacts.