Final answer:
The LDO/CWO designators 64XX and 74XX are used in the United States Navy to differentiate between different specialties within the Limited Duty Officer (LDO) and Chief Warrant Officer (CWO) ranks. LDOs are commissioned officers with specialized skills, while CWOs are technical experts in their fields.
Step-by-step explanation:
The LDO/CWO designators 64XX and 74XX are used in the United States Navy to differentiate between different specialties within the Limited Duty Officer (LDO) and Chief Warrant Officer (CWO) ranks.
64XX designators are for LDOs, who are commissioned officers with specialized skills and knowledge in a particular area. The 64XX designators cover a range of specialties including administration, supply corps, intelligence, and engineering. For example, 641X designators are for LDOs specializing in administration, while 645X designators are for LDOs specializing in intelligence.
74XX designators are for CWOs, who are technical experts in their fields. The 74XX designators cover specialties such as electronics technician, information system technician, and aviation maintenance technician. For example, 741X designators are for CWOs specializing in electronics technician, while 743X designators are for CWOs specializing in aviation maintenance technician.