Which group exercises primary responsibility for the effective operation and support of the 3-M program?

The group that exercises primary responsibility for the effective operation and support of the 3-M program is typically the Type Commander (Tycom). Tycoms are responsible for overseeing the operation of numerous units within their domain, ensuring that they meet readiness and maintenance goals as outlined in the 3-M system. They develop and implement policies, programs, and procedures that are essential for maintaining material readiness and supporting the Navy's mission.

This responsibility includes providing the necessary guidance and resources for the 3-M program, facilitating training for personnel, and conducting assessments to ensure compliance with standards. Tycoms play a crucial role in the overall successful implementation of maintenance management and operational readiness across their assigned fleets.

While Commanding Officers, Immediate Superiors in Command, and Afloat Training Groups all contribute to the 3-M program in various ways, the Tycom has the overarching authority and responsibility for coordinating and ensuring the effectiveness of the program across multiple commands and ships.