Remember that according to CT: Book 6 - Scouts:
The Operations Office (and hence the Scout Fleet Branch) are part of the Bureaucracy, and hence have administrative rank, if nothing else. It is likely that Scout Fleet personnel that crew ships (as noted above) probably have "crew rank" titles and supervisory positions that are assigned based on both their administrative rank and function aboard the ship.The Operations Office is responsible for the activities of the Service in the establishment, maintenance, and operation of its bases and fleets. It is divided into Maintenance, Security, Bases, and Scout Fleet branches.
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The Scout Fleet consists of all of the vessels used by the Scout Service. Because the operation of space vessels requires a great deal of supervision, training, and control, the Scout Fleet is organized similar to a naval unit. Vessels used in the Field (for exploration or communications, for example) belong to the Scout Fleet, even if operated by individuals not specifically assigned to that office. The Scout Fleet supports the Communications Office and Exploration Office activities, and provides ships (as well as some personnel to crew them) to those offices.