mos.directory

Navy NEC · Logistics

S12A Independent Duty Postal Clerk

Current service use not established

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

A Navy Enlisted Classification: a skill designation sailors hold in addition to their rating.

Browse Navy

Overview

An Independent Duty Postal Clerk manages accountable mail and performs the duties of a Custodian of Postal Effects. The clerk prepares routing instructions, transportation forms, financial and incident reports, operates postage meter equipment, trains mail orderlies, and maintains post office security.

Minimum clearance: Secret

Core Skills

  • International mail and customs documentation
  • Postal incident reporting and security compliance
  • Postal financial report accuracy review
  • Undeliverable mail directory service and routing

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Postal Service Clerks

Advising customers on postal claims, managing accountable mail, and operating postage meters transfer directly to postal counter service and mail acceptance.

How to prepare: Review civilian mail acceptance and postage procedures, focusing on differences from shipboard operations.

What the civilian work involves
  • Weigh letters and parcels, compute mailing costs based on type, weight, and destination, and affix correct postage.
  • Obtain signatures from recipients of registered or special delivery mail.
  • Answer questions regarding mail regulations and procedures, postage rates, and post office boxes.

Cargo and Freight Agents

Preparing mail routing instructions, transportation forms, and international customs documentation provides a foundation for civilian shipment documentation and routing.

How to prepare: Practice preparing a commercial shipment document set, including a bill of lading and invoice, to build on military mail transportation documentation experience.

What the civilian work involves
  • Determine method of shipment and prepare bills of lading, invoices, and other shipping documents.
  • Estimate freight or postal rates and record shipment costs and weights.
Civilian tools and software (examples)
  • Microsoft Excel
  • Microsoft Word

Notes & Sources

Evidence for this guidance (3 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC S12A

    [1] NEC entry "S12A - Independent Duty Postal Clerk"; cached text line 10315; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: International mail and customs documentation, Postal incident reporting and security compliance, Postal financial report accuracy review, Undeliverable mail directory service and routing, Postal Service Clerks (O*NET 43-5051.00), Cargo and Freight Agents (O*NET 43-5011.00)

  2. O*NET: Postal Service Clerks

    [2] O*NET 30.3 occupational data

    Supports: Postal Service Clerks (O*NET 43-5051.00)

  3. O*NET: Cargo and Freight Agents

    [3] O*NET 30.3 occupational data

    Supports: Cargo and Freight Agents (O*NET 43-5011.00)

Defense contractor jobs for S12A

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

Report an error on this page