<![CDATA[This study aims to determine the factors that affect the use of the Double Electronic Chart Display and Information System (ECDIS), analyze the effectiveness of Double ECDIS as a substitute for paper sea maps on shipping safety, and identify obstacles and solutions in its implementation on MV. Meratus Medan 1. This study uses a qualitative descriptive method with a case study approach. Data collection was carried out through observation, interviews, and documentation during the implementation of marine practices in MV. Meratus Medan 1. The results of the study show that the use of Double ECDIS is effective as a substitute for paper nautical charts because it improves navigation efficiency, speeds up voyage planning, facilitates Electronic Navigational Chart (ENC) updates, and provides accurate and real-time navigation information through integration with GPS, AIS, Radar, Gyro Compass, Echo Sounder, and Speed Log. The obstacles found include electronic system interference, delay in ENC updates, electrical interference, and user competence. The handling is carried out through backup arrangements, ENC updates, system maintenance, officer competency improvement, the implementation of the Safety Management System (SMS), and the provision of paper nautical charts as emergency navigation.]]>
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