Motor Machinist's Mate
The changes are dated to 1948; no month or day is given.
- The history does not specify how MoMM personnel were assigned between the two successor ratings.
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). | Established 1948 from the ratings of Machinist's Mate (CB) (Equipment Operators) and Motor Machinist's Mate. | included in Engineman 1948. Normalized as split/multi-destination. Reconciles 4 reciprocal, grade-specific, or repeated source assertions for the same predecessor/date.
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; #anchorm, Mechanic entry; #anchorm, Motor Machinist's Mate entry; reproduced on archived Ohio PDF p. 7, 10, 11 · 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:48; #anchore, Engineman entry; #anchorm, Mechanic entry; #anchorm, Motor Machinist's Mate entry; reproduced on archived Ohio PDF p. 7, 10, 11
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, EN, CM entries · source dated 1970 · cited by the explanation
Open source document (opens in a new tab)