Abstract: A connection for connecting compressed-air lines arranged on the body of a floating dredge leading to measuring devices, control devices or the like, with measuring air lines mounted on a suction pipe of the floating dredge used for suction pipe position measuring units for the operation of pneumatic drives of throttle valves or the like arranged on the suction pipe. The measuring air lines are connected to a coupling component which is fastened on the sliding plate of the suction pipe elbow. A coupling countercomponent is fastened to the body of the dredge in the region of the sliding plate. The compressed-air lines lead from the coupling countercomponent to the devices arranged on the body of the dredge.

Abstract: A marine vessel propulsion assembly includes at least one propeller nozzle unit having a rudder associated with it. The propeller nozzle unit has a shroud laterally surrounding the propeller and the shroud is supported so that it can be pivoted about two different axes each extending transversely of the flow direction. In the desired angular position, the shroud can be locked in position. The two pivot axes of the shroud extend perpendicular to one another. The shroud is connected to a shaft extending in the direction of one of the pivot axes and the shaft can be interlocked with shaft guide means. The shroud and the rudder each include the same angle of pitch of at least two degrees relative to the propeller shaft.