That's a submarine.
Which is notably not going to be launching a drone the size of a even a Shahed, nor anything close to the same range.
It also cannot detect nor engage incoming air threats, like essentially every single in service submarine on the planet due to the whole "being underwater" thing.
Yes, it's is a submersible, but it is also a drone.
> Which is notably not going to be launching a drone the size of a even a Shahed, nor anything close to the same range.
It doesn't need to. It is its own munition with a anywhere from 500 to a couple of tons of explosives on board. And a very impressive range.