More recently, the UAE supposed procured German torpedos for stern tubes on little 58 meter support ships.
https://ukdefencejournal.org.uk/uae-may-be-able-to-target-iranian-submarines-at-base/
Apparently, the German DM2A4 can run near the surface and raise a tiny GPS aerial for midcourse guidance. Attacking Iranian subs in harbor with torpedoes fired from UAE territorial waters would be a clever trick. Recent events in the Black Sea might prove the efficacy of the concept, although the weapons in question were supposedly crude and slow UUVs.
I do have to wonder if the DM2A4 is the inspiration for the USN’s proposed “cheap” HWT? Battery technology has come a long way and offers a viable alternative to OTTO II at a fraction of the price. I’m not suggesting the USN has surface launched HWT torpedos in mind. However, the modular nature of the DM2A4 stackable batteries could make half length HWTs a viable option, either for USV surface launch, external tubes on UUVs, air launch or double loading tubes like the Swedes do with their 400mm torpedoes.