This research provides a qualitative analysis of having Open-Source Intelligence (OSINT) at the National Maritime Information Center (NMIC). Indonesia's geographic condition demands strong marine defense and has enormous challenges in the maritime sector, so it is necessary to integrate maritime information data systems through the National Maritime Information Center. Technological advances provide opportunities and threats related to the potential to obtain information quickly. New technologies help localize, process, and disseminate large amounts of data and prepare it for analysis coming from Open-Source Intelligence. NMIC is required to be able to meet the needs of its users in the form of short and fast intelligence reports by utilizing information from OSINT. This is what underlies researchers to conduct research with problem formulations that have the effectiveness of OSINT in the NMIC. This research uses a qualitative method with an exploratory approach to find and analyze more in-depth things that are not yet known about OSINT. Productivity theory is used by researchers to discuss problem formulations assisted by NVIVO 12 tools in processing data and Soft System Methodology (SSM) to analyze data. The results showed that to use OSINT effectively, NMIC must have large data analysis capabilities using artificial intelligence assistance.