Marine Corps · SSN history

789 Meteorological Plotter

Appendix B lists SSN 789, Meteorological Plotter, under AR 615-26 of September 1942 and its supplements, with SSN 784 as a suggested conversion. This was not an automatic replacement: each affected Marine’s Qualification Card had to be reviewed against the job specifications before reassignment.

Codes named in this history

Codes without a directory match

  • 784 stated by the source. No directory or archive record matches.

Documented history

Meteorological Plotter

June 1945 is the manual’s publication date. No effective date for the suggested conversion is given.

  • No June 1945 Present Title is listed for SSN 789; the earlier title and suggested conversion do not establish a fixed successor.
Source extraction notes

Predecessor title from the AR 615-26 column: Meteorological Plotter. Suggested conversions/remarks: 784. The table gives no row-level effective date. June 1945 is the manual publication date, not an effective conversion date.

Source documents (1)

Reviewed September 24, 2026 against references 3 and 4.

Historical information is drawn from the sources linked above. Classification dates are not personal service dates. Spot an error? Let us know.