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// Officer Designator · O-1 to O-10 · NATO OF-1 to OF-9

CHAPLAIN CORPS OFFICER (4100)

The Staff Corps community of Navy chaplains — clergy serving Sailors, Marines, and Coast Guardsmen of every faith.

Chaplain Corps device — silver Christian Latin cross (one of several faith-specific Chaplain Corps insignia)
Insignia
Designator
4100
Abbreviation
CHC
Community
Staff Corps
Paygrade Range
O-1 to O-10
NATO Range
OF-1 to OF-9
Category
Officer Designator

OVERVIEW

The 4100 Chaplain Corps designator identifies Staff Corps officers in the U.S. Navy who are ordained clergy serving as Navy chaplains. Navy chaplains provide religious ministry to their own faith group, facilitate worship and religious accommodation for Sailors and Marines of all faiths (and of no faith), provide confidential pastoral counsel, advise commanding officers on ethical and moral issues, and serve as a moral compass within the unit. The Chaplain Corps serves the Navy, Marine Corps, and Coast Guard — three uniformed services without their own chaplain corps.

Chaplains are commissioned from more than 100 different faith group endorsing agencies — Roman Catholic, Protestant denominations, Jewish, Muslim, Buddhist, Hindu, Latter-day Saints, Orthodox Christian, and others. Every Navy chaplain holds an ecclesiastical endorsement from their faith group recognizing them as clergy.

RESPONSIBILITIES

  • Provide religious ministry to Sailors, Marines, and Coast Guardsmen of the chaplain's own faith group
  • Facilitate religious accommodation and worship for Sailors and Marines of all faiths
  • Provide confidential pastoral counsel — protected by absolute privilege under federal law
  • Advise commanding officers on the ethical, moral, and religious well-being of the unit

HISTORY

The Navy Chaplain Corps was established on November 28, 1775 — just one month after the Continental Navy itself — making it one of the oldest professions in the U.S. Navy. The first Navy chaplain, Reverend Benjamin Balch, served aboard the frigate Boston during the Revolutionary War.

Over the next 250 years the Chaplain Corps expanded from an originally Protestant-only community to include Catholic priests (1888), Jewish rabbis (1917), Muslim imams (1996), Buddhist priests (2004), Hindu pandits (2011), and clergy from more than 100 different faith groups today.

COMMISSIONING SOURCES

  • Direct Accession (most)
  • Chaplain Candidate Program (CCP — for seminary students)

TRAINING PIPELINE

  1. 1. Officer Development School (ODS)~5 weeks
    Naval Station Newport, RI
    Direct-commission officer indoctrination.
  2. 2. Basic Chaplain Leadership Course~9 weeks
    Naval Chaplaincy School, Fort Jackson, SC
    Joint chaplain school covering military religious ministry, joint religious-program operations, and pastoral counseling in the military environment.
  3. 3. Senior Chaplain Course~4 weeks
    Naval Chaplaincy School, Fort Jackson, SC
    Mid-grade course preparing Lieutenant Commanders for major-staff and command positions.

TYPICAL CAREER PATH

  1. O-1/O-2
    ODS + Chaplain School + first tour
    Officer Development School, Basic Chaplain Course at Naval Chaplaincy School, then first tour with a Marine battalion or aboard a small ship.
  2. O-3
    Mid-grade Chaplain Tour
    Aircraft carrier, large amphib, recruit training command, or Coast Guard sector chaplain.
  3. O-4
    Department Head
    Senior chaplain at a Marine Expeditionary Force, naval base, or major staff.
  4. O-5
    Major Command Chaplain
    Senior chaplain at a numbered fleet, MEF, or major regional command.
  5. O-6
    Senior Religious Leadership
    Senior chaplain leadership at OPNAV, Marine Corps HQ, or as Chief of Navy Chaplains.

RELATED DESIGNATORS

RELATED BASES

How to address
Verbally "Chaplain Smith" or "Chaps." In writing: "LT Jane Smith, CHC, USN."
Prerequisites
  • Master of Divinity (MDiv) or equivalent 72-hour graduate-level theological degree
  • Ecclesiastical endorsement from a Department of Defense-recognized faith group
  • 24+ months of active ministry experience
  • Successful completion of Officer Development School (ODS) and Naval Chaplaincy School
Common assignments
  • Battalion Chaplain with a Marine Corps infantry battalion
  • Ship's Chaplain aboard an aircraft carrier or amphibious assault ship
  • Installation Chaplain at a Navy or Marine Corps base or recruit-training command
  • Coast Guard sector or training-center chaplain

FREQUENTLY ASKED QUESTIONS

The 4100 designator identifies a Staff Corps officer in the Navy Chaplain Corps — an ordained clergy member of a DoD-recognized faith group serving as a Navy, Marine Corps, or Coast Guard chaplain.

The Navy Chaplain Corps includes clergy from more than 100 distinct faith group endorsing agencies, spanning Roman Catholic, Protestant, Jewish, Muslim, Buddhist, Hindu, Latter-day Saints, Orthodox Christian, and other faith communities.

Yes. Communications with a Navy chaplain are absolutely privileged under federal law and Navy regulations — chaplains may not be compelled to disclose confidential pastoral counsel.

SOURCES

Last updated 2026-05-02
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