Navy Officer designator · Logistics
166X Strategic Sealift Officer
Current service use not established
This code is listed in the directory. Inclusion alone does not confirm current service use.
A Navy officer classification, not an enlisted rating.
Overview
A Strategic Sealift Officer serves in traditional mariner positions aboard civilian ships and is qualified to command a vessel or provide engineering support. Depending on the position, they oversee navigation, voyage planning, cargo operations, vessel stability, deck crews, safety equipment, lifeboats, emergency systems, and bridge or cargo watches.
Notes & Sources
- NOOCS Part A (Edition 96, Jul 2026) defines officer designator 166X as: “Special Duty Officer · Strategic Sealift Officer (SSO)”
- The designator row is an identity/qualification statement, not a duty description, so occupation-specific skills, career paths, and credential recommendations are not published here; duties depend on the billet and community qualification.
Evidence for this guidance (1 document)
- NAVPERS 15839I Vol I Part A · Billet and Officer Designator Codes (NOOCS Edition 96, Jul 2026)
[1] Part A officer designator table, block 166X, cached text line 540
Supports: Specialty definition
Source review recorded September 24, 2026.
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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