Supercored 81MAG / M21

Marine radar equipment is crucial for navigation and safety at sea, and the Supercored 81MAG / M21 is a notable model from Hyundai Welding Co., Ltd. (Pohang). This radar system is designed to meet the X-Band and S-Band standards as well as the IMO SOLAS requirements, ensuring compliance with international maritime regulations. The Supercored 81MAG / M21 operates using electromagnetic radar, providing reliable performance for various marine applications. Common issues with this model include magnetron end-of-life after 5,000 to 8,000 hours of operation, bearing damage on the antenna rotation motor after 30,000 hours, display backlight failure, heading marker misalignment, and moisture intrusion in the waveguide due to faulty pressure equalization. To address these potential failures, Hyundai Welding Co., Ltd. recommends keeping a spare magnetron on board, with a lead time of 1 to 3 weeks for delivery. Maintenance guidelines include replacing the magnetron every 5,000 to 8,000 hours and lubricating the antenna bearing annually. Additionally, weekly performance monitoring tests are required by IMO regulations, and an annual inspection is recommended to ensure continued reliability and compliance.