The training manual shows the role and place, the composition, structure and features of the International Space Radiotechnical Disaster Detection System (ISSRS). The composition and principle of operation, structure and features of the operation of the marine (ship) emergency radio buoy (LRB - 406), as well as ways to maintain the readiness of ARB - 406 for use . are considered. Directions for further improving the effectiveness of the ICRSOTB in the organization of search and rescue of those in distress. The training manual is intended for students of the boatmaster's faculty of higher educational institutions of water transport and can be useful for graduate students.