Toroidal propellers versus naval pump-jets

Could toroidal propellers discussed for drones have naval applications comparable to pump-jets?

They may have naval applications, but they must offer a real advantage over existing pump-jets in cost, construction, maintenance, or noise before adoption makes sense.

Toroidal propellers have possible naval applications, but the relevant comparison is with pump-jets already in service. Cost, construction, maintenance, and acoustic performance are the tests that matter. A technically interesting propulsor does not justify adoption by itself. It needs to offer a practical advantage over systems that navies already understand and support.