Navy Officer designator · Engineering
613X Engineering/Repair (Surface) LDO
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 Surface Engineering and Repair Limited Duty Officer plans, administers, and supervises the installation, operation, maintenance, and repair of surface ship engineering equipment. The officer manages propulsion, electrical and auxiliary systems, hull and structural work, damage control procedures, ship alterations, training, quality assurance, and repair facility operations.
Notes & Sources
- NOOCS Part A (Edition 96, Jul 2026) prints officer code 613X as “A Limited Duty Officer…”, paired with its Limited Duty Officer billet row (billet 6130 requiring the specialty); the row states who holds the code and which specialty the billet requires, not what duties every holder performs. See the cited block for the exact pairing text.
- Because the Navy carries no duty, training, or clearance prose at designator level, occupation-specific recommendations are not published here; a 613X officer’s duties depend on the assigned billet.
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 613X, cached text line 770
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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