SIMA, San Diego

SIMA San Diego (Shore Intermediate Maintenance Activity, San Diego) was established to provide maintenance and repair support for the U.S. Navy's surface fleet stationed in the San Diego area. Originally formed during the Cold War era, SIMA San Diego played a critical role in ensuring the operational readiness of ships by offering a wide range of technical services, from hull repairs to electronic systems maintenance. The unit worked closely with fleet units and shipyards, adapting to evolving naval technologies and operational demands. In the early 2000s, as part of Navy restructuring, SIMA San Diego was reorganized and its functions integrated into the Regional Maintenance Center (RMC) system to further streamline fleet support operations.