Abstract: Telemetry system for a ship propulsion system with a stationary part and a movable part that is movable relative to the stationary part. The telemetry system includes a processor, a data acquisition unit, at least one sensor, and a local power source. The processor, the at least one sensor and the power source are arranged in the movable part. The at least one sensor can measure an operational state of the movable part. The processor is connected to the at least one sensor for receiving signals from the at least one sensor and can transmit the received signals to the data acquisition unit. The local power source is arranged for providing power to at least one of the processor and at least one sensor, and the transmission of the received signals is arranged by a wireless communication link between the processor and the data acquisition unit.

Abstract: Speed regulator for a brushless DC motor, wherein the DC motor comprises a stator, a rotor and an electromagnet wherein the electromagnet is in the vicinity of the stator, the rotor produces a permanent magnetic field and the electromagnet is activated to generate an alternating magnetic field; furthermore comprising a power supply and a regulating element, the regulating element being connected to the power supply to regulate the power feed to the electromagnet, so that, during use, a torque generated by the DC motor is regulated, characterized in that the speed regulator is able to generate a voltage V(?) as a function of rotor speed of revolution, rotor position (?), rotor load and motor activation, wherein the speed regulator sets the change in the voltage V(?) of the motor as a function of the rotor position ? in such a way that the instantaneous torque T(?), at least in the vicinity of the reversal in polarity of the driving magnetic field, complies with the conditions that the derivative (?)/?? is esse