Signalman
The Coast Guard Bulletin dates the new rating structure to 2 April 1948. Applying that exact date to the SM merger is inferred from the broader overhaul, rather than explicitly confirmed for SM; September 1948 is the Bulletin's publication month.
- The explicit statement that SM merged into QM comes from Lewis's historical compilation, which says it is not an official reference guide.
- The implementing circular is not available to confirm the merger's precise effective date.
Source extraction notes
MEDIUM CONFIDENCE, operator-approved dual-cited exception. Lewis supplies the directional statement 'Merged into QM' and the 1941-1948 Signalman span; its printed p. 1 says the compilation is not an official reference guide. The contemporaneous September Bulletin says the Coast Guard effected its new rating structure on 2 April 1948 and that active QM personnel covered both quartermaster and signalman duties, while Reserve emergency QMQ and QMS remained distinct. The date is therefore tied to the overhaul; the missing implementing circular prevents high confidence.
Source documents (2)
Reviewed September 23, 2026 against references 1 and 2.
- Dana Lewis, U.S. Coast Guard Enlisted Ratings: Rating Specialty Marks & Distinguishing Marks, 1915-2015
1. printed p. 35 / PDF p. 36, Signalman (SM) entry · source dated December 2016 · cited by the explanation
PDF page 36 (opens in a new tab)3.Dana Lewis, U.S. Coast Guard Enlisted Ratings: Rating Specialty Marks & Distinguishing Marks, 1915-2015 · event transcription · docs/legacy-data/uscg-rating-history.jsonl:8; printed p. 35 / PDF p. 36, Signalman (SM) entry
PDF page 36 (opens in a new tab) - U.S. Coast Guard Bulletin, vol. 4, no. 3, September 1948, 'New Rating Structure'
2. article 'New Rating Structure,' printed pp. 25-26 / PDF pp. 5-6 · source dated September 1948 · cited by the explanation
PDF page 5 (opens in a new tab)PDF page 6 (opens in a new tab)