Controllable-Pitch Propeller (CPP) · Shaft Line & Propulsion
Controllable Pitch Propeller by Kongsberg Maritime AS is a controllable-pitch propeller system in which blade pitch can be varied while the propeller shaft is rotating. It is installed at the stern as part of the propulsion shaft line, with a hub mechanism, pitch-control hydraulics or actuation system and controls linking bridge demand to blade angle. Changing pitch allows thrust magnitude and direction to be controlled without relying solely on engine-speed reversal, which is useful for manoeuvring and for engines operated near an efficient speed range. The system interfaces closely with shaft bearings, gearbox or engine, hydraulic power, remote propulsion control and pitch feedback. Unlike fixed-pitch propellers, the CPP introduces moving hub components and control oil into the underwater propeller assembly, adding dedicated sealing and pitch-mechanism maintenance. Blade size, hub type, pitch range and control pressure are project-specific; refer to the manufacturer documentation for the exact figure.
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“Propulsion • Controllable Pitch Propeller • Rim Drive Azimuth Thruster • Azimuthing thruster ( US and Azipull ) • Adjustable Bolted Propeller/Fixed Bolted Propeller • Elegance Pod • ARC Thrusters –…”
What our service work and the manufacturer documentation say about keeping this model running.
Trend pitch response, control-oil pressure and tank level, inspect filters and analyse oil condition, and verify feedback calibration against the approved procedure. At dry dock inspect blades, hub, seals and accessible mechanism for cavitation, corrosion, impact and leakage. Function-test local/emergency pitch control and all interlocks with the remote propulsion system. Class survey attention includes hub integrity, pitch mechanism, seals, shaft-line condition and emergency operation; refer to the manufacturer documentation for the exact figure.
Carry pitch-control valve and feedback-sensor spares, hydraulic seals, filters and selected servo components appropriate to the installed system. Plan major hub-seal and blade-mechanism spares for docking work rather than relying on generic components.
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