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Coast Guard Officer Subspecialty · Support

CG-SEI20 Training and Education

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

An officer subspecialty earned alongside a primary designator, marking advanced education or experience in this field.

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Overview

Training and Education specialty officers instruct personnel and analyze, design, develop, implement, and evaluate training systems and broader performance and readiness initiatives. They apply Human Performance Technology across fields such as cognitive science, organizational behavior, instructional design, and adult learning theory, typically in FORCECOM assignments that include training centers, interagency liaison roles, and the Coast Guard Academy.

Notes & Sources

  • COMDTINST M5300.3A (Officer Specialty Management System Manual, 3 Jun 2020) establishes the Coast Guard’s Officer Specialty Code system; by its Table 4-1 nomenclature, CG-SEI20 is a Subspecialty code (SEI = the specialty’s abbreviated name; “10” marks the Specialty and “11” and higher mark Subspecialties within it).
  • The authoritative list of approved Specialties/Subspecialties and each code’s Officer Specialty Requirement (OSR) is maintained by PSC-OPM-3 on the CG Portal, which is not public; no code-exact official definition of duties was retrievable.
  • The description shown on this page is Coast Guard recruiting-site category prose aligned by specialty (gocoastguard.com officer categories), not the code’s official OSR; treat it as a general indication of the specialty’s field, not proof of any individual holder’s duties, qualifications, or training.
  • Reserve Component Manager career guide: Human Resources track option “CG-SEI11 or CG-SEI20” (Training and Education).
  • The 2022 Reserve Component Manager career guide lists the training-and-education option as “CG-SEI11 or CG-SEI20” without printing SEI20’s full name; the DB label “Training and Education” is the aligned name.
Evidence for this guidance (3 documents)
  1. Coast Guard Officer Specialty Management System Manual, COMDTINST M5300.3A (3 Jun 2020)

    [1] Ch.1 §B (system overview); Ch.4 Table 4-1 (OSC terminology)

    Supports: Specialty definition

  2. DMDC COOL USCG MOC feed: CG-SEI20 (Subspecialty)

    [2] moc_id 8871, moc_key ssc_cg_sei20, moc_codetype “Subspecialty” (cached feed fetched 2026-07-24)

    Supports: Specialty definition

  3. Reserve Component Manager, Officer Career Guide (CG-R, Aug 2022)

    [3] Appendix C professional-development matrix / specialty list

    Supports: Specialty definition

Source review recorded September 24, 2026.

Defense contractor jobs for CG-SEI20

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

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