Back in the dreamtime A4Gs were envisaged to tear out to a surfaced submarine (perhaps damaged by S2s/Wessex 31bs) to sink it (maybe drop a torpedo?). As mentioned nothing seemed to eventuate -
WEBF says also.
Use Emerging Technology For ASW - October 2021 Proceedings Vol. 147/10/1,424
https://www.usni.org/magazines/proce...technology-asw
OR
PDF of above article:
https://calhoun.nps.edu/bitstream/ha...gs-10-2021.pdf (2.5Mb)