Abstract: This invention relates to a method and a Propeller Pitch Control Arrangement, comprising a propeller hub (1) having a number of interface fittings (10) for adjustable pitch positioning of a propeller blade, a positioning device (3), within said hub (1), having a number of propeller control interfaces (34) and an actuator arrangement (2, 4, 55) arranged to move and position said positioning device (3) to enable varying pitch for said propeller blades, characterized in—that said actuator arrangement includes a rotatable shaft (2) with threads (20) interacting with mating threads (30) at said positioning device (3), and,—that said rotatable shaft (2) is driven by a motor device (4, 5) positioned adjacent said hub (1).

Abstract: This invention relates to a method and a Propeller Pitch Control Arrangement, comprising a propeller hub (1) having a number of interface fittings (10) for adjustable pitch positioning of a propeller blade, a positioning device (3), within said hub (1), having a number of propeller control interfaces (34) and an actuator arrangement (2, 4, 55) arranged to move and position said positioning device (3) to enable varying pitch for said propeller blades, characterized in—that said actuator arrangement includes a rotatable shaft (2) with threads (20) interacting with mating threads (30) at said positioning device (3), and,—that said rotatable shaft (2) is driven by a motor device (4, 5) positioned adjacent said hub (1).

Abstract: A steering and reversing system for a marine jet propulsion unit having a stationary nozzle (3) for discharging a water jet rearwardly from the unit comprises a pair of steering and reversing members (4, 5) which are mounted side by side at the rear end of the nozzle and individually pivotable in opposite directions about upright axes (7) from a non-deflecting position to first and second deflecting positions. In the non-deflecting position, the steering and reversing members (4, 5) form a rearwardly directed extension of the nozzle, while in the first deflecting position each member diverts a portion of the water jet laterally outwardly by means of its front section (4a, 5a) and in the second deflecting position each member deflects a portion of the water jet downwardly and forwardly by means of scoop-like members at its rear section (4b, 5b).