Yep thats it Garry, it did come out of the US equivalent to our Sonar 2087 LFA program.

Love the way that the treehuggers whinge about it utterly ignorant of the effects on marine mammals that we had in the Falklands, precisely because we didnt have such a system to track discrete SSK’s, and had to drop ordnance on ‘suspected’ contacts lest one of them turned around and fired torpedoes at us. LFA may not be so great for a whale’s navigation and communication faculties, but, its nowhere near as bad as the effects a pair of Mk11 depth charges has on ’em!.