Who is responsible for ensuring compliance with the 3-M system aboard ships?

The commanding officer (CO) holds the ultimate responsibility for ensuring compliance with the 3-M system aboard ships. As the highest-ranking officer, the CO establishes the overall policies and priorities for the ship's operations, including maintenance and material management. This position encompasses accountability for the ship's readiness and the effective implementation of the 3-M system, which is crucial for sustaining operational effectiveness.

The CO ensures that all personnel are aware of their responsibilities within the 3-M framework and must advocate for compliance with maintenance procedures, scheduling, and reporting. By overseeing the entire operation and setting a culture of accountability, the CO provides the leadership necessary to maintain high standards of maintenance management as outlined in OPNAVINST 4790.1J.