What rates combine to become EQCM?

The combination of rates that forms the designation of EQCM, which stands for Equipment Operations Chief Master Chief, is indeed composed of CMCS (Construction Mechanic Chief) and EOCS (Equipment Operator Chief). These two rates represent critical technical and operational leadership roles within the Navy, particularly focused on managing and overseeing equipment operations and maintenance.

The responsibilities of both Construction Mechanics and Equipment Operators are essential for effective logistics, engineering, and readiness in various naval operations. By merging these rates, the Navy ensures that a chief at the EQCM level possesses a comprehensive expertise that balances both construction mechanization and heavy equipment operation, which is vital in securing operational efficiency and effectiveness across fleet activities.

Other combinations mentioned do not align with the specific qualifications or operational focus required to fulfill the role of EQCM. Each role represented in the incorrect answers pertains to different technical fields or administrative functions, thus not reflecting the specific integration of skills needed for this EQCM designation.