Gould 0738 wrote:
Anybody have actual experience running a single screw boat with a Kortz nozzle?
(no I heard from a guy who knows a guy who met a guy stuff, please)

Any discernable difference in propwalk when making sternway?

Have operated a single screw submersible with a fixed Kort nozzle. There
was no "overhang" of the hull above the prop on either version. There
was detectable prop walk when submerged several hundred meters and
hovering in midwater where external influences would be considered to be
equal in all directions but none noticed on surface operations.

The fixed nozzle on my tug was removed (according to previous owner)
because it limited the usefulness of prop walk when maneuvering astern
in close quarters. Prop walk in this boat is awesome and must be
experienced to be believed ... useful sometimes, dreadful the other times.

Rick