Navy NEC · Engineering

U15D Senior Shipboard Enlisted Engineering Maintenance Manager (Top Snipe) Candidate (Diesel)

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.

Overview

A diesel Senior Shipboard Enlisted Engineering Maintenance Manager candidate serves as Plant Control Officer when designated by the commanding officer in the absence of the Engineer Officer, ACE, or MPA. The candidate supervises the EOOW, PPWO, or RCO during specified plant operations and assists with the welfare, health, job satisfaction, morale, and training of engineering enlisted personnel.

Core Skills

  • Engineering watch supervision during ship maneuvers
  • Engineering crew welfare and training support

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.

Ship Engineers

Supervising engineering watches and plant operation during departures, anchoring, and underway replenishment transfers directly to shipboard engineering operations.

How to prepare: Request an official sea-service transcript and assemble vessel particulars and assigned duties for National Maritime Center evaluation against an engine-officer endorsement checklist; a DD-214 alone is not acceptable sea-service evidence. Entry depends on Coast Guard evaluation of sea time and applicable MMC endorsement, TWIC, training, examination, citizenship, medical and drug-testing requirements, with STCW required for open-ocean service; military-service eligibility for Chief Engineer unlimited requires service in the capacity of engineer officer.

What the civilian work involves
  • Monitor engine, machinery, or equipment indicators when vessels are underway, and report abnormalities to appropriate shipboard staff.
  • Monitor and test operations of engines or other equipment so that malfunctions and their causes can be identified.
  • Start engines to propel ships, and regulate engines and power transmissions to control speeds of ships, according to directions from captains or bridge computers.

Notes & Sources

  • U15D Plant Control Officer duties apply only when designated by the commanding officer and in the absence of the Engineer Officer, ACE or MPA.
Evidence for this guidance (6 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC U15D

    [1] NEC entry "U15D - Senior Shipboard Enlisted Engineering Maintenance Manager (Top Snipe) Candidate (Diesel)"; cached text line 11482; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Engineering watch supervision during ship maneuvers, Engineering crew welfare and training support, Ship Engineers (O*NET 53-5031.00)

  2. O*NET: Ship Engineers

    [2] O*NET 30.3 occupational data

    Supports: Ship Engineers (O*NET 53-5031.00)

  3. USCG National Maritime Center: Apply for Merchant Mariner Credential

    [3] Original, Raise of Grade, and STCW application steps; public page retrieved through Jina Reader 2026-09-23

    Supports: Ship Engineers (O*NET 53-5031.00)

  4. USCG: 46 CFR 10.232 military sea-service evidence and credit

    [4] Paragraphs (a) and (d)(1), official eCFR snapshot September 21, 2026; retrieved September 24

    Supports: Ship Engineers (O*NET 53-5031.00)

  5. USCG: 46 CFR 11.201 officer-endorsement requirements

    [5] Paragraph (a), official eCFR snapshot September 21, 2026; retrieved September 24

    Supports: Ship Engineers (O*NET 53-5031.00)

  6. Bureau of Labor Statistics: Water Transportation Workers

    [6] How to Become; training, licenses and related experience; updated August 27, 2026, checked September 23, 2026

    Supports: Ship Engineers (O*NET 53-5031.00)

Defense contractor jobs for U15D

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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