Why anti-submarine throwers were not Carl Gustavs

Were there recoilless anti-submarine weapons comparable to a Carl Gustav?

There were anti-submarine throwers, but they did not work on the same principle as a Carl Gustav-type recoilless weapon.

A launcher or thrower existed in the anti-submarine field, but it did not operate on the same principle as a Carl Gustav-type recoilless weapon. The exchange distinguishes the two categories without naming the ASW system or explaining its mechanism. It therefore supports a basic classification, not a detailed technical comparison.