A pitch angle indicator system for indicating a pitch angle of blades of a propeller of a marine propulsion unit, comprising: - a first rod, - a mechanical link coupled between at least one of said blades and a first end of said first rod, and - an indicator coupled to a second end of said first rod, in which: - said mechanical link is configured to convert a change in said pitch angle into a rotation of said first rod about its longitudinal axis, and - said indicator is configured to provide an indication of the amount of rotation of said first rod about said longitudinal axis, in which the coupling between said first rod and said indicator comprises: - a third joint configured to convert a rotation of said first rod about its longitudinal axis into a rotation of an indicator shaft, and - a compensator mechanism configured to compensate for movements of a larger entity, part of which is said first rod, from the indication provided by the indicator, characterized in that said third joint comprises: - a first gear rim, - a turning mechanism configured to convert a rotation of said first rod about its longitudinal axis into rotation of said first gear rim about its center point, - a first rotational encoder with an encoder shaft that also constitutes said indicator shaft, and - a first transmission configured to convert a rotation of said first gear rim about its center point into rotation of said encoder shaft, and that said compensator mechanism comprises: - a second gear rim (901, 1001), concentric with said first gear rim and configured to maintain its rotational position in relation to the first gear rim when the pitch angle is constant, - a second rotation encoder with a first compensator shaft, - a second transmission configured to convert a rotation of said second gear rim (901, 1001) about its center point into rotation of said first compensator shaft, and - a signal processor configured to receive signals from each of said first and second rotation encoders and to output a combination of said signals. - a first rod, - a mechanical link coupled between at least one of said blades and a first end of said first rod, and - an indicator coupled to a second end of said first rod, - said mechanical link is configured to convert a change in said pitch angle into a rotation of said first rod about its longitudinal axis, and - said indicator is configured to provide an indication of the amount of rotation of said first rod about said longitudinal axis, - a third joint configured to convert a rotation of said first rod about its longitudinal axis into a rotation of an indicator shaft, and - a compensator mechanism configured to compensate for movements of a larger entity, part of which is said first rod, from the indication provided by the indicator, - a first gear rim, - a turning mechanism configured to convert a rotation of said first rod about its longitudinal axis into rotation of said first gear rim about its center point, - a first rotational encoder with an encoder shaft that also constitutes said indicator shaft, and - a first transmission configured to convert a rotation of said first gear rim about its center point into rotation of said encoder shaft, - a second gear rim (901, 1001), concentric with said first gear rim and configured to maintain its rotational position in relation to the first gear rim when the pitch angle is constant, - a second rotation encoder with a first compensator shaft, - a second transmission configured to convert a rotation of said second gear rim (901, 1001) about its center point into rotation of said first compensator shaft, and - a signal processor configured to receive signals from each of said first and second rotation encoders and to output a combination of said signals.