Electrician's Mate (CB) (Draftsman) · Merged into DM, effective 1948
Malin/BUPERS source assertion: Established 1948 from the ratings of Carpenter's Mate (CB) (Draftsman), Electrician's Mate (CB) (Draftsman), Shipfitter (CS) (Mechanical Draftsmen), Specialist (X) (Engineering Draftsman), Specialist (X) (Topographic Draftsmen), Specialist (X) (Cartographers), and Specialist (P) (Photogrammetry). 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.
Sources
- Charles A. Malin/Bureau of Naval Personnel, Compilation of Enlisted Ratings and Apprenticeships, U.S. Navy, 1775 to 1969 (rev. Dec. 1969) (#anchord, Draftsman entry; reproduced on archived Ohio PDF p. 7)
- Charles A. Malin/Bureau of Naval Personnel, Abbreviations Used for Navy Enlisted Ratings (1970) (alphabetic abbreviation list, EM(CBD), DM entries)