The Republic of Indonesia is an archipelagic nation with a territorial water area larger than its land area. This condition results in high demand for a fleet of warships that possess a high level of reliability to safeguard its territory. To meet the requirement for reliability in the fleet of warships, periodic monitoring is necessary to ascertain the reliability status of a warship as it carries out its duties as a crucial component in safeguarding the waters of the Republic of Indonesia. Additionally, regular maintenance in a timely manner and in accordance within the ship’s needs is essential. The significance of warships in safeguarding Indonesia’s maritime territory cannot be disregarded. Hence, planned monitoring and regular maintenance play a pivotal role in maintaining ship performance. Unplanned maintenance and monitoring can disrupt the operational capabilities of warships, jeopardizing the integrity of maritime security. In this disclosure, the researcher has developed a web-based information system to manage the reliability of warships. This system will categorize ship systems and subsystem in accordance with the applicable military standards. With the implementation of this information system, it is expected that the monitoring and maintenance of warships can be conducted more efficiently.