Planned Maintenance System (PMS), Maintenance Data System (MDS), and which other system are the three separate 3-M system subsystems?

The correct answer is Intermediate Maintenance Management System (IMMS) because it is specifically designed to work alongside the Planned Maintenance System (PMS) and the Maintenance Data System (MDS) as part of the Maintenance Management System (3-M). IMMS facilitates the management of maintenance operations at the intermediate level, ensuring that the necessary resources, equipment, and data are available to perform effective maintenance.

PMS primarily focuses on preventive maintenance, outlining scheduled maintenance tasks, while MDS collects and analyzes maintenance data to aid in decision-making and performance evaluations. IMMS complements these systems by providing a structured approach to intermediate-level maintenance, which includes management of repair parts, work accomplished, and backlog management.

Other options do not fit within the framework of the three separate subsystems of the 3-M system as defined in U.S. Navy maintenance procedures. Each system integrates different aspects of maintenance management, but IMMS is specifically tailored to bridge between the PMS and MDS processes effectively.