I just stumbled across this one.

The DASH Weapon System

What Was DASH?

In the mid 1950's the Russian Submarine force was becoming increasingly ominous in size and capabilities and the U.S. Navy sought a method to counter that threat before any submarine could come within striking distance of a U.S. Naval ship.

The Navy was developing a rocket-launched anti-submarine torpedo called ASROC (Anti-Submarine ROCket), but it was too limited in range to take advantage of increased detection ranges of that day that the large AN/SQS-26 Sonar system promised. ASROC was also very expensive and complex requiring each ship to be reconfigured by installing a complex control system. Adding to these issues were Naval Aviators who were not receptive to the idea of launching manned helicopters from small destroyer decks at high sea states. The Navy needed a solution to conduct their Anti-Submarine Warfare missions and there were no solutions in sight.
(Source & More)

Enjoy the ride,
DAn