// Officer Designator · O-3 to O-10 · NATO OF-2 to OF-9

ENGINEERING DUTY OFFICER (1440)

The Restricted Line community that designs, builds, repairs, and modernizes the U.S. Navy fleet.

Insignia

Designator

1440

Abbreviation

EDO

Community

Restricted Line

Paygrade Range

O-3 to O-10

NATO Range

OF-2 to OF-9

OVERVIEW

The 1440 Engineering Duty Officer (EDO) designator identifies Restricted Line officers in the U.S. Navy who specialize in the design, acquisition, construction, maintenance, repair, modernization, and disposal of U.S. Navy ships and submarines. EDOs do not command ships at sea; instead, they serve in shore engineering positions at Naval Sea Systems Command (NAVSEA), shipyards, supervisor-of-shipbuilding offices, and program offices, where they translate operational requirements into engineering reality.

Most EDOs lateral-transfer into the community as Lieutenants from the Surface Warfare (1110) or Submarine (1120) communities, bringing operational experience to their engineering work. Designated EDOs typically hold or earn graduate degrees in naval architecture, mechanical engineering, or ocean engineering at the Naval Postgraduate School in Monterey, CA or MIT.

RESPONSIBILITIES

Manage Navy ship construction at a shipyard or supervisor-of-shipbuilding office
Lead surface, submarine, or carrier maintenance availabilities
Develop new-construction ship class requirements at NAVSEA
Serve as a Program Manager for a major acquisition program

HISTORY

The Engineering Duty Officer designator was established in 1916 to formalize the role of officers who managed Navy ship construction and repair. The community was historically based at Boston Navy Yard, Mare Island Navy Shipyard, and other industrial Navy facilities; today it is centered at Naval Sea Systems Command in Washington, DC and at the four remaining public shipyards: Portsmouth, Norfolk, Puget Sound, and Pearl Harbor.

EDOs were instrumental in the design of every modern U.S. Navy class — from the Nimitz-class carriers to the Virginia-class submarines and the in-development Constellation-class frigates.

COMMISSIONING SOURCES

Lateral transfer from URL (most), USNA Direct Track, Direct Commission

TRAINING PIPELINE

1. EDO Basic Course~6 weeks
Port Hueneme, CA
Introduction to ship construction, maintenance, and Navy acquisition.
2. Naval Postgraduate School (NPS)~24 months
Monterey, CA
Master's or PhD in naval architecture, mechanical, or ocean engineering.
3. EDO Basic Qualification Production Tour~24–36 months
Public shipyard or SUPSHIP
Hands-on engineering work earning the EDO basic qualification.

TYPICAL CAREER PATH

O-3
Lateral Transfer + NPS
Successful URL officer transfers to 1440 and reports to Naval Postgraduate School for graduate engineering education.
O-3/O-4
EDO Basic Qualification
First production tour at a shipyard or SUPSHIP office to earn EDO basic qualification.
O-4
Department Head
Department-head tour at a Navy shipyard or NAVSEA acquisition program.
O-5
Major Engineering Command
Command of a SUPSHIP office, regional maintenance center, or major acquisition project.
O-6
Shipyard Commander / Major Program Manager
Command of a public shipyard or major NAVSEA program.

RELATED DESIGNATORS

RELATED BASES

How to address

Same as the underlying officer rank — e.g., "Lieutenant Commander Smith." Community is addressed as "EDO" in writing.

Prerequisites

Lateral-transfer from a URL community (typically 1110 or 1120) with operational fitness reports
Earn a graduate engineering degree (typically at NPS or MIT)
Successful completion of the EDO Basic Qualification Program
Maintain Top Secret clearance

Common assignments

Project Officer at a Supervisor of Shipbuilding (SUPSHIP) office
Department Head at one of the four public Navy shipyards
Program Manager at NAVSEA or PEO Ships, PEO Carriers, or PEO Submarines
Naval Attaché engineering liaison at a U.S. embassy

FREQUENTLY ASKED QUESTIONS

The 1440 designator identifies a Restricted Line officer in the Engineering Duty community — a shore-based engineering specialist managing the construction, maintenance, repair, and modernization of Navy ships and submarines.

Most EDOs lateral-transfer into the 1440 community as Lieutenants from the Surface Warfare or Submarine communities after a successful first sea tour, then complete a graduate engineering degree at Naval Postgraduate School or MIT.

No. EDOs are Restricted Line officers and do not command ships at sea. They serve in shore-based engineering, acquisition, and program-management positions for the entirety of their EDO career.

SOURCES

Last updated 2026-05-02

All Officer Designators Full Rank Structure