mos.directory

Navy NEC · Engineering

733B LPD-17 Class Engineering Control System (ECS) Operator

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 LPD 17 Class Engineering Control System Operator uses ECS consoles to align, operate, and monitor main propulsion diesel engines and conduct casualty control procedures. The operator follows EOSS procedures to control the engines locally from the PLCC and remotely from the PACC, with limited supervision in port and underway across all conditions of ship readiness.

Core Skills

  • Local and remote diesel propulsion control
  • EOSS-directed propulsion casualty control
  • Propulsion alignment across ship readiness conditions

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

Operating and monitoring main propulsion diesel engines through local and remote consoles, including casualty control, directly overlaps shipboard engine operation.

How to prepare: Assemble sea-service records showing vessel name, GRT or displacement tonnage, propulsion power, dates assigned, and position served for an NMC evaluation. Military Deck or Engine department service may be creditable toward a Deck or Engine license under 46 CFR 10.232 and Marine Safety Manual Vol III, Part A, Chapter II.

What the civilian work involves
  • Monitor engine, machinery, or equipment indicators when vessels are underway, and report abnormalities to appropriate shipboard staff.
  • Start engines to propel ships, and regulate engines and power transmissions to control speeds of ships, according to directions from captains or bridge computers.
  • Perform or participate in emergency drills, as required.

Power Plant Operators

Procedure-based propulsion-console operation, equipment monitoring, and casualty response transfer to power-plant control work, but the verified duties concern diesel propulsion rather than electrical generation.

How to prepare: Seek a plant-operator trainee program covering generator controls and plant-specific operating procedures. For a nuclear reactor operator route, applicants must complete extensive training, pass rigorous examinations, and undergo a physical examination; the facility licensee must certify satisfaction of its training and experience requirements under 10 CFR 55.31, and the NRC license "is only valid to operate the facility for which the applicant applied."

What the civilian work involves
  • Control power generating equipment, including boilers, turbines, generators, or reactors, using control boards or semi-automatic equipment.
  • Monitor power plant equipment and indicators to detect evidence of operating problems.
  • Start or stop generators, auxiliary pumping equipment, turbines, or other power plant equipment as necessary.

Notes & Sources

  • For the maritime path, use the NMC checklist for the specific credential: Original, Raise of Grade, and STCW applications require TWIC, CG-719B, CG-719S sea-service documentation and CG-719P drug-test documentation, documented sea service and relevant training or assessments, and fees, as applicable to that credential.
Evidence for this guidance (6 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC 733B

    [1] NEC entry "733B - LPD-17 Class Engineering Control System (ECS) Operator"; cached text line 17394; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Local and remote diesel propulsion control, EOSS-directed propulsion casualty control, Propulsion alignment across ship readiness conditions, Ship Engineers (O*NET 53-5031.00), Power Plant Operators (O*NET 51-8013.00)

  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: Military to Mariner (military sea service credit)

    [3] Military Service Requirements section; public page retrieved through Jina Reader 2026-09-23

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

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

    [4] 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)

  5. O*NET: Power Plant Operators

    [5] O*NET 30.3 occupational data

    Supports: Power Plant Operators (O*NET 51-8013.00)

  6. NRC: Licensing Process for Operators

    [6] Process for New Operator Licenses; page last reviewed/updated 2026-09-15; retrieved 2026-09-23

    Supports: Power Plant Operators (O*NET 51-8013.00)

Defense contractor jobs for 733B

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