What organization provides the bulk of the Navy's combat logistics services to ships at sea?

The organization that provides the bulk of the Navy's combat logistics services to ships at sea is the Naval Fleet Auxiliary Force. This force plays a critical role in sustaining Navy operations during deployments by offering various logistical support services, including fuel, supplies, and maintenance. This means that while ships are engaged in operations, the Naval Fleet Auxiliary Force ensures that they have the necessary resources to continue functioning effectively without needing to return to port frequently.

This capability is essential because it allows operational flexibility and extended missions, which are crucial for naval readiness and the overall effectiveness of maritime operations. The ships of the Naval Fleet Auxiliary Force are specifically designed for logistics support, distinguishing their role within the Navy's broader operational framework.