Anti-submarine weapons used on land

Were anti-submarine weapons ever used against ground troops, reversing the use of land-attack weapons against ships?

The Australian Matilda Hedgehog is a concrete example of adaptation for land use. Japanese depth-charge employment against landings is recalled uncertainly, and no example of torpedoes fired at troops is identified.

The Australian Matilda Hedgehog is the clearest example offered of adapting an anti-submarine weapon for land use. Possible Japanese use of depth charges against American landings is recalled, but no particular landing can be identified. No example of firing a torpedo directly at troops is supplied. Land and Sea Mattress are also mentioned, without a developed explanation of their relationship to anti-submarine weapons.