Changed or Discontinued Ratings
| Aviation Storekeeper | AK | Merged into Storekeeper or Ships Serviceman (SH) in January 2003. |
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| Aviation Structural Mechanic (Hydraulics) Aviation Structural Mechanic (Structures) |
AMH AMS |
Merged into Structural Mechanic or Hull Tech (HT) in March 2001. | |
| Aviation Support Equipment Technician (Electrical) Aviation Support Equipment Technician (Hydraulics and Structure) Aviation Support Equipment Technician (Mechanical) |
ASE ASH ASM |
Merged into Aviation Support Equipment Technician in March 1990 | |
| Aviation Antisubmarine Warfare Technician Aviation Fire Control Technician |
AX AQ |
Merged into Aviation Electronics Technician in January 1991. | |
| Boiler Technician | BT | Merged into Machinist Mate in October 1996. | |
| Cryptologic Technician(Communications) Cryptologic Technician (Administration) |
CTO CTA |
Merged into Information Systems Technician in March 2006. Merged into Yeoman in January 2009 |
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| Disbursing Clerk | DK | Merged into Personnel in October 2005. | |
| Draftsman | DM | Merged into Mass Communication Specialist in July 2006. | |
| Data Systems Technician | DS | Merged into Electronics Technician and Fire Controlman in October 1998. | |
| Dentalman | DT | Merged into Hospital Corpsman in August 2005. | |
| Electronic Warfare Technician | EW | Merged into Cryptologic Technician in October 2003. | |
| Journalist | JO | Merged into Mass Communication Specialist in July 2006. | |
| Lithographer | LI | Merged into Mass Communication Specialist in July 2006. | |
| Mess Management Specialist | MS | Changed to Culinary Specialist in January 2004. | |
| Ocean Systems Technician | OT | Merged into Sonar Technician in October 2005. | |
| Postal Clerk | PC | Merged into Logistics Specialist in October 2009. Effective in January 2010. | |
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Personnelman | PN | Merged into Personnel Specialist in October 2005. |
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Photographers Mate | PH | Merged into Mass Communication Specialist in July 2006. |
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Radioman | RM | Merged into Information System Technician in November 1999. |
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Storekeeper | SK | Merged into Logistics Specialist in October 2009. Effective in January 2010. |
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Signalman | SM | Disestablished on 4 November 2003. |
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Torpedoman's Mate | TM | Merged into Gunner's Mate in October 2007. |
https://navydads.ning.com/forum/topics/discontinued-and-changed
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