Some review from one guy on twitter, so take it with a grain of salt:
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"Let's start with the alleged cruise missile launched from the sub, the speed, the propulsion, the near to surface level clearly reminds me of a torpedo from a submarine at surface."
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"Next scene is the launch of an alleged cruise missile from a Ghadir Sub. It appears that it not a C-801 (YJ-82). The C-801 (YJ-82) submarine-launched version can be used only when the sub has surfaced which is not the case."
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"So is it a C-802 (Noor) ? Possibly. The C-802 is a missile with a rocket booster and a small turbojet engine. After the launch the booster is jettisoned and the turbojet sees action. In the footage it is not possible to see the rocket booster ejected. But there is a size issue."
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"The still of the launch does not really reminds of a C-801 or a C-802, the wings are very close to the ovoid nose as opposed to the C801/2 which wings are farther in the rear. It would rather look like a C-704/Nasr missile."
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"Finally, The launch of a C-704/Nasr missile from a Ghadir Sub would be doubtful as the Ghadir would only launch a missile through its torpedo tubes, and here according the pictures the missile is launched and break the water surface vertically and not inclined or horizontally."
"My guess is that it was not a Ghadir sub, but rather a static testing platform anchored to allow a canister being set vertically so the missile fired would be very near to surface because the ignition already occurs below sea level as opposed to a true sub launched missile."
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"Actually you can see on the footage what appears to be the canister lid after the missile was launched. I believe the canister was destroyed, it was a one time show."
"What makes the missile surface at an angle is a canister launched with the missile. When fired from a torpedo tube it's quite complex, and to achieve that vertical path right from surface level I don't see other options than a VLS. Prob is that there are no hatches on a Ghadir"