Huh, I wouldn't classify any of those propulsion trains as pump-jets (and I never heard them called that aboard said vessels ;-P), but wikipedia seems to agree with you.
They're ducted propulsors, a direct evolution of the classic submarine prop that integrates a pressure-increasing shroud and stator vane assembly. A "pump jet" classically involves some sort of centrifugal pump element or at least a vectoring mechanism.
You typically wouldn't call a ducted fan (ex, on the X-22 [1]) a jet, but I guess in the water we do.
They're ducted propulsors, a direct evolution of the classic submarine prop that integrates a pressure-increasing shroud and stator vane assembly. A "pump jet" classically involves some sort of centrifugal pump element or at least a vectoring mechanism.
You typically wouldn't call a ducted fan (ex, on the X-22 [1]) a jet, but I guess in the water we do.
[1]: https://en.wikipedia.org/wiki/Bell_X-22