Yeah, they use an open screw instead of a pumpjet. Which kind of makes sense as this thing is not a boomer or attack sub. It’s the equivalent of our SSGNs, mostly it’s a missile truck to haul around (usually) non-nuclear cruise missiles, so a higher cruise speed might be something they designed for to get missiles in range of a ‘brushfire war’ target.
Russia does have ducted-prop pumpjet technology and they’re not alone in using open screws on modern non-boomer subs.
thank you...