The high performance electromagnetic surgical navigation system (EM-system) is using cabled instruments with integrated sensitive micro coils which are measured with high precision in an alternating electromagnetic field. This measurement allows a real-time representation of the instruments relative to the patient in preoperative medical images. Thereby and in addition with the sophisticated user guidance system, the EM-System provides reliable support for surgeons during CMF (Craniomaxillofacial), ENT (Ear- Nose- and Throat), Spinal as well as neurosurgical procedures. The EM-System also can be combined with any equipment trolley or endoscopy tower and can be connected to the clinic network for data exchange (e. g. DICOM data). So the EM-System can be integrated easily into any operating room. Special feature: All instruments are designed autoclavable and reusable whereby special costs and extra waste of single-use instruments are omitted.