Motor Machinists's Mate (SR) (Diesel Engine Mechanics)
The change is dated to 1948; no month or day is given.
- The identification of the diesel-engine rating as MoMM(SRD) is inferred from the companion abbreviation list rather than explicitly stated in the change entry.
Source extraction notes
Malin/BUPERS source assertion: Re-established at all pay grades 1948 from the ratings of Motor Machinist's Mate, Motor Machinists's Mate (SR) (Diesel Engine Mechanics), and Motor Machinists's Mate (SR) (Gasoline Engine Mechanics). Normalized as merged/included. One or more historical long-title variants were normalized to a reviewed companion-list abbreviation by similarity match; the intermediate ledger records the method and the audit lists the source anomalies.
Source documents (2)
Reviewed September 23, 2026 against references 1 and 2.
- Charles A. Malin/Bureau of Naval Personnel, Compilation of Enlisted Ratings and Apprenticeships, U.S. Navy, 1775 to 1969 (rev. Dec. 1969)
1. #anchore, Engineman entry; reproduced on archived Ohio PDF p. 7 · 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:49; #anchore, Engineman entry; reproduced on archived Ohio PDF p. 7
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, MoMM(SRD), EN entries · source dated 1970 · cited by the explanation
Open source document (opens in a new tab)