Instrumentman
The record gives 1964 as the establishment year for PICM, without a month or day. December 1969 is the compilation's revision date, not the date of the change.
- The record does not establish when lower-pay-grade use of IM ended.
Source extraction notes
Malin/BUPERS source assertion: Established 1964; combination of OM and IM ratings at pay grade E-9. Normalized as merged/included. The source explicitly limits this combination to pay grade E-9; it does not assert that lower-pay-grade use of the predecessor rating ended.
Source documents (2)
Reviewed September 23, 2026 against references 1, 2 and 3.
- Charles A. Malin/Bureau of Naval Personnel, Compilation of Enlisted Ratings and Apprenticeships, U.S. Navy, 1775 to 1969 (rev. Dec. 1969)
1. #anchorm, Master Chief Precision Instrumentman entry; reproduced on archived Ohio PDF p. 10 · source dated December 1969 · cited by the explanation
Open source document (opens in a new tab)3.Charles A. Malin/Bureau of Naval Personnel, Compilation of Enlisted Ratings and Apprenticeships, U.S. Navy, 1775 to 1969 (rev. Dec. 1969) · event transcription · docs/legacy-data/navy-rating-history.jsonl:167; #anchorm, Master Chief Precision Instrumentman entry; reproduced on archived Ohio PDF p. 10 · cited by the explanation
Open source document (opens in a new tab) - Charles A. Malin/Bureau of Naval Personnel, Abbreviations Used for Navy Enlisted Ratings (1970)
2. alphabetic abbreviation list, IM, PICM entries · source dated 1970 · cited by the explanation
Open source document (opens in a new tab)