Shaheeds are aerodynamic clones of the Israeli Harpy SEAD drone, which in turn were based on the German Dornier DAR of the 1980s.
Compared to the loitering anti-radar DAR, the Shaheed is electronically extremely simple and not much more advanced than the WW2 V-1.
The fact that Russia started producing Shaheeds reflects more on the poor state of Russian industry than any sophistication of Iranian technology.
We have US cloning Iranian drones now https://www.euronews.com/2026/03/10/flm-136-americas-cheap-i...
Could be a copy of those? They don't look that complicated - tube with explosives, battery, electric motors, some sort of computer/radio control. Not so different to a Shahed in complexity.
That said, a UUV fleet would have downsides for Iran. It's expensive, dependent on imports and an overmatch for swarm-style attacks. Attack boats are a closer fit for the "cheap/attritable" tactics we see used with Shaheds.
You just need a body (plastic tube), batteries, motors, and a computer. Maybe with a "range extender" gas engine. Everything can be COTS, and Iran certainly can manufacture occasional custom components.
After all, it can manufacture centrifuges for uranium enrichment.
My money is still on low-observable attack craft, or a high-low mix that deprioritizes submersibles. Iran has an impressive panopoly but also has casus belli to lie out their nose. If Iran does have fully submersable UUVs, I'd expect them to be saved for a direct confrontation with the US Navy, not tankers.
I could definitely be wrong though, I don't have any insider info to work with here.
