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ETE1-E3

Electronics Technician

E-1 to E-3 (Junior Enlisted) · Navy

E1–E3E-4E-5E-6E-7E8–E9
HEADS UP

The rate will hand you a multimeter, a stack of PMS MRCs, and a space full of equipment you have never seen — and expect you to produce on all three simultaneously. A-school taught you theory; the ship teaches you the system. The ETSA and ETSN who chase qualifications instead of waiting to be chased are the ones the LPO hands the hard troubleshoot by month six. Start the NWAE BIB the week you check aboard, not the week the cycle opens.

The Honest MOS Read
Electronics Technician Seaman Apprentice through Seaman (ETSA/ETSN) is the bottom of the rate, and the rate is not apologetic about it. You checked in from A-school at the Center for Information Warfare Training, Corry Station, Pensacola — or from a prior rating conversion — and the ship's technical world is larger, louder, and more interconnected than anything the schoolhouse built. The LPO signs your PQS and decides which systems you touch. That relationship is the one you need to get right before anything else. Your primary job for the first twelve months is the 3-M system. Planned Maintenance System MRCs are not busywork — they are the documented maintenance history the ISIC inspector, the Type Commander readiness officer, and the combat systems officer read when they want to know whether this ship's electronics are actually being maintained or just logged. When you execute an MRC — lube points hit, corrosion treated, functional check run, result logged in OMMS-NG — you are building the paper trail that either passes or fails the command's next inspection. Your name is on every MRC you sign. The LCPO reads initials, not intentions. The electronic systems you are maintaining depend entirely on your ship type and which work center you check into. Surface combatants — DDGs, CGs, LCS, amphibious ships — are the most common first tour. On an Aegis DDG or CG, the AN/SPY-1 radar and the combat direction system equipment will dominate the senior ETs' world from the moment you step aboard; at E-1 through E-3 you are executing the PMS on support equipment, interior communications, navigation suites, and the radar system components the LPO assigns to the junior end of the bench. On non-Aegis surface ships — LHDs, LPDs, older surface types — the AN/SPS-67 surface search radar and AN/SPS-48E air search radar are the primary equipment families. Know which systems your work center owns before your first Monday quarters. Watch qualification runs parallel to PMS. The ship's PQS program and the 301-series watch qualification requirements for your ship type define the operator-level qualifications you need before you can stand an unsupervised watch in CIC or the electronic warfare spaces. PQS is not fast and the watchbill does not open a slot until the board is sat and the signature is on the page. The ETSN who treats PQS as a future problem is the ETSN still waiting for the sign-off when the next NWAE cycle opens and his peers are on the advancement list. The NEC conversation is real from day one, even if it feels abstract. NEC 1426 (ET-Radar), NEC 2791 (Combat Direction Systems Technician), and NEC 2879 (Aegis Weapons System) are the three primary surface ET pipeline credentials that open advanced billets and shape sea-tour options at ET2 and ET1. The submarine track — Nuclear Power School in Goose Creek, South Carolina, followed by Basic Enlisted Submarine School in Groton, Connecticut — is a separate pipeline that requires volunteer status, nuclear screening, and a career commitment that is fundamentally different from surface ET. The decision about which path to pursue lives with the career counselor and the LCPO, and you will not be ready to make it intelligently until you know your ship type and your own technical aptitudes. But pull NAVPERS 18068 Vol II and read the NEC catalog entries for 1426, 2791, and 2879 before the six-month mark so the conversation is informed when it happens. Liberty posture and barracks discipline at ETSA/ETSN are not side issues — they are the foundation of every other career decision that follows. The senior ET who checks out at 1600 and is in the LPO's office at 0730 on a Monday with a DUI or an Article 134 situation has closed more career doors in one weekend than a missed NWAE cycle opens. The financial readiness reality: the base pay for E-1 through E-3 is the floor, BAH and BAS add depending on housing situation, and the sailor who arrives at ET3 with a car note that consumes 40% of take-home pay is the sailor making decisions about re-enlistment for the wrong reasons. The command financial specialist and the FFSC counselor exist; use them before the situation is a crisis.
Career Arc
  • 01Check aboard, meet the LPO and LCPO within the first 72 hours, get the PQS package signed out, and start MRC execution on assigned systems the first week — the watch starts from the moment you report.
  • 02First 90 days: PMS completion at work-center average or better, first PQS section signed, operator-level familiarization on at least one primary system in the work center documented.
  • 03Six-month mark: first watch qualification board sat or on the LCPO's schedule with a specific date; NWAE BIB pulled and study habit established; NEC preference conversation with LCPO initiated.
  • 04Nine-to-twelve months: 301-series watch qualification signed, first MRC training session run with a junior ETSA under your supervision, NEC pipeline direction documented in the career counselor's record.
  • 05ET3 advancement cycle: NWAE study log on the LCPO's table, E-4 timeline realistic, any advancement exam date in the record with a documented preparation plan.
  • 06Pre-transfer: warfare device qualification (EAWS, SW, or platform-applicable device) in progress or pinned; CSMP work center contributions visible in the transfer evaluation; the LPO can brief your record in thirty seconds without looking at notes.
Common Screwups
  • ×DUI or alcohol-related incident at ETSA/ETSN. This is not a stumble — it is a career-defining event at this rank. NJP under Article 111 UCMJ, Page 13, possible discharge characterization impact, and a flag on the security clearance investigation that follows the record for years. The rate takes electronics clearances seriously; a substantiated alcohol incident at E-2 is still in the background investigation at E-6.
  • ×OPSEC violation involving shipboard electronics system capabilities, radar performance data, or combat systems specifics posted to social media or discussed in an unsecured context. Surface combatant electronic system performance data is classified or FOUO. The NCIS investigation that follows is not resolved with an apology.
  • ×Falsifying a PMS MRC — initialing a maintenance step as complete when it was not run. The 3-M coordinator reads every MRC on an ISIC visit, the OMMS-NG audit trail shows the completion time, and the ETSN whose name appears on a fraudulent MRC faces NJP and a permanent notation in the service record the promotion board reads.
  • ×Financial mismanagement that triggers a command financial counseling referral or a debt-management flag. Pay garnishment at E-2 draws command attention faster than most junior sailors expect; the CO is notified, the security clearance is flagged, and the LCPO starts a counseling chain that follows the record.
  • ×Unauthorized access to a system or space — working on energized equipment without the required ESWP tag-out authorization, accessing a classified network without proper clearance validation, or entering a restricted space without the documented access right. NSTM Chapter 300 and the ship's safety management program exist because the voltage kills. The investigation that follows an unauthorized access incident begins with the tag-out log.

A Day in the Life

  • 0530-0630Command or divisional PT. Electronics work centers run PT with the combat systems department or the division — formation run, interval training on the pier, or hangar deck. No falling out. The senior ETs track who shows up.
  • 0630-0730Hygiene, chow, utilities on. Pre-quarters: pull OMMS-NG and check which MRCs are due today, verify there are no overnight equipment fault reports that need a 3-M entry before quarters, check the tag-out log for any active tags in your work center that affect morning maintenance.
  • 0730-0800Quarters. Division LPO puts out the day's maintenance tasking and watchbill assignments. If you are the most junior ETSN in the work center, you are likely assigned to the morning PMS evolution and the afternoon training block. Listen to who is assigned what — you will be asked to cover a tasking you missed if you were not paying attention.
  • 0800-1130PMS execution on assigned systems. Pull the MRC, read it completely, gather support materials and tools from the work center, execute each step in sequence, and log the result in OMMS-NG before moving to the next MRC. If a step produces an out-of-tolerance result, stop, flag the LPO, and open a CSMP discrepancy — do not skip forward and close the card.
  • 1130-1230Chow. Tool accountability check before leaving the space — if any tools are on the bench, they go back in the kit before you leave. A missing tool is a FOD event on some platforms and a work-center discrepancy on all of them.
  • 1230-1430Afternoon block alternates between PQS study, watchbill qualification sessions with a senior ET, and continuation of morning PMS if not complete. If a training period is scheduled, the LPO runs a system walkthrough or a fault-isolation exercise on a non-operational system — this is when you ask the questions you did not ask in the morning.
  • 1430-1530NWAE study block. 30 minutes minimum — BIB section assigned for the week, worked through without the phone. The LPO may ask at Friday quarters which BIB section was covered; the ETSN who cannot answer is the one who was not studying.
  • 1530-1600End-of-day OMMS-NG verification — all MRC completions logged, any deferred MRCs entered with authorization documented, CSMP entries reviewed for accuracy. Tag-out log check if any tags were active during the day's maintenance.
  • 1600-1630Liberty or duty section rotation. On a duty day the watchbill picks up — console watch in CIC or the electronic warfare spaces if qualified, or observe-and-qualify rounds if not yet signed off.
  • 1630-1900Liberty. First-tour sailors who end liberty at a bar every weeknight are the ones in the LPO's office at 0730 Monday for the wrong reason. The ETSN who uses this block for NWAE study, PQS review, or a workout is building the record the next evaluation reflects.
  • 1900-2100NWAE BIB continuation, PQS review for tomorrow's qualification session, or NEC research — reading the NAVPERS 18068 entry for the NEC pipeline you are considering is thirty minutes well spent. The career counselor conversation lands differently when you have read the catalog entry versus when you are hearing the NEC code for the first time.
  • 2100-2200Wind down. Early to bed is not glamorous at this rank. The ETSN who is consistently rested, on time, and prepared is visibly different from the one who is consistently tired, late, and reactive. The LPO notices both.
  • Underway / at seaThe daily schedule compresses into the watchbill rotation — port and starboard or three-section rotation depending on manning. PMS execution happens between watches and during maintenance periods. The ETSN on watch in CIC overnight is the one developing the operational context that makes the troubleshoot make sense when the system goes down at 0300. Take the watch seriously; the OOD notices the watchstander who is present and the one who is occupying a seat.

Weekly Cadence

Monday sets the work-center maintenance rhythm. After quarters the LPO publishes the week's PMS schedule against the MRC due dates in OMMS-NG — which systems are being maintained which morning, which training evolutions are blocked in the afternoons, and which qualification sessions are scheduled. The ETSN who arrives at Monday quarters having already checked the OMMS-NG due list is ahead of the one who finds out at quarters what is happening this week. Tuesday and Wednesday are the core PMS execution days. The work center is at its highest maintenance activity tempo — MRCs being executed on primary systems, CSMP discrepancies being worked, and parts-ordering conversations happening between the LPO and the supply petty officer. The ETSN's job in these two days is execution without friction: right MRC, right procedure, right log entry, no callbacks from the LPO for incomplete documentation. The work center that runs clean Tuesday and Wednesday is the one that has a lighter administrative load Thursday and Friday. Thursday is often the training and qualification block day. PQS sessions happen in the afternoon, system walkthroughs run during the maintenance period if equipment is available, and the BIB study tracking conversation happens between the LPO and the junior enlisted before end of day. Friday is PMS completion verification, OMMS-NG audit, and the weekly counseling touchpoint — the LPO reviews the ETSN's week: MRC completion rate, PQS progress, any open discrepancies, and the upcoming week's expectations. The ETSN who brings a summary of the week's work to the Friday counseling session — what was completed, what is open, what is coming — is the ETSN the LPO describes as managing himself.

Key Skills — How to Drill Each

  1. 01
    Execute PMS MRCs on assigned electronics work centers — lube, clean, inspect, torque — with the OMMS-NG feedback card filled in correctly and on time.
    Read the MRC completely before touching the equipment — every step, every safety precaution, every required support item. The MRC is the technical authority for the maintenance action; a step skipped because it seemed obvious is the step the ISIC inspector asks about by number. When a step produces an out-of-tolerance result, document it in OMMS-NG as a discrepancy before closing the card, not after the LPO asks why the reading was off. The ETSN who develops the habit of reading the full MRC first and logging the actual result — not the expected result — is the ETSN the LPO starts trusting with the calibration verifications by month six.
  2. 02
    Perform basic continuity and insulation-resistance checks on a circuit with a multimeter and a megohmmeter; read a schematic block diagram and explain the signal flow.
    Buy a copy of the NSTM Chapter 320 electronics fundamentals section and read it alongside whatever system TM is on your bench this week. The multimeter skills from A-school are real; the ship's equipment has configuration quirks the school never showed you. When the LPO hands you a fault with a symptom, trace the signal path on the block diagram before opening the equipment — understand what the system is supposed to do at each stage so you can recognize where it stops doing it. The ETSN who explains the fault in signal-flow terms instead of 'it stopped working' is the ETSN the LPO sends to the CIC equipment call without an escort.
  3. 03
    Stand a console watch in CIC or electronic warfare spaces as a qualified operator — qualified per the 301-series checklist, not provisional.
    PQS is a sequence, not a list — do it in the order the program specifies, get each section signed before moving to the next, and do not let a section linger unsigned because you forgot to ask. The board is the test; prepare for it by running through the evolution verbally with a senior ET before you request the sign-off. 'I think I know it' is not the same as 'I can explain it to the division officer at 0200 without prompting.' Request the board before the LCPO asks why it is not done.
  4. 04
    Use the IETM and electronic tech-pub system to pull the correct technical manual for a casualty — right chapter, right platform configuration, right equipment number.
    The tech-pub portal has multiple configuration versions for most systems; the wrong config pulls the wrong procedure. When you receive a casualty, write down the equipment nomenclature and serial number before going to the portal — the LPO will ask which TM section you referenced and expects a chapter number, not 'I looked it up.' Practice navigating to the relevant TM section on a non-casualty day so the portal search is fast when the OOD is standing behind you.
  5. 05
    Log every maintenance action in OMMS-NG accurately and on time; no deferred MRCs with your initials that are more than the PMS coordinator's allowed deferral window past due without documented authorization.
    Log maintenance actions the same day they occur — not end of week, not before the coordinator visit. When a MRC cannot be completed on schedule, create the deferral in OMMS-NG with a reason and get the LPO's signature before the due date passes. The 3-M coordinator can pull your completion history by name; the ETSN with a pattern of same-day completions logged at 1558 on Friday is visible in the audit trail. The one with clean, same-day logging on the day of execution looks completely different.
  6. 06
    Operate navigation displays at the basic operator level — radar repeaters, chart system, GPS display — so the OOD does not wait for the LPO on a routine fault.
    Navigation system operator proficiency is separate from electronics maintenance and often treated as secondary by the junior ET who is focused on PMS and PQS. Do not make that mistake. The OOD who loses a navigation display during a restricted-water transit needs an answer, not a phone tree. Learn the power-on, operator check, and basic restart procedure for every navigation display in your watch station before you qualify the watch, and rehearse the casualty response on a non-operational day so it is muscle memory when it matters.

Manuals & References — What Chapters Matter

  • NSTM Chapter 320 — Electronics (NAVSEA)
    This is the technical governance document for every electronics maintenance action on a Navy surface ship. At ETSA/ETSN level, the relevant sections cover safety requirements, equipment identification, basic test procedures, and the documentation standards for maintenance records. The LPO cites it on safety deviations; the ISIC inspector cites it on maintenance findings. Read the sections that apply to your equipment baseline before the first maintenance period, not after the first discrepancy.
  • NSTM Chapter 300 — Electric Plant (including ESWP — Electrical Safety Working Procedures)
    The ESWP section of Chapter 300 governs every tag-out, every lockout, and every energized-equipment authorization on the ship. At E-1 through E-3 you are not initiating tag-outs — but you are working in spaces where they are active, and knowing what the tag means and what you are authorized to touch is what keeps you off the casualty report. Read the ESWP section before your first maintenance period in an energized electronics space.
  • OPNAVINST 4790.4 — Ships 3-M Systems Procedures (current series)
    This instruction is the rule book for PMS execution, OMMS-NG logging, CSMP management, and the deferral authorization process. At ETSA/ETSN level the relevant chapters cover what a completed MRC looks like, what a properly documented deferral requires, and what the 3-M coordinator checks on a scheduled visit. The inspector does not accept 'I did not know the deferral needed LPO authorization' as a response to a finding.
  • NAVEDTRA ET Rate Training Manual / current NRTC series and the NWAE Bibliography for Advancement (BIB) from MyNavyHR / NETC
    The ET3 NWAE covers rate technical content and professional military education content enumerated in the BIB. Pull the BIB the week you check aboard, not the week the advancement cycle opens — the cycle opens faster than first-tour sailors expect. The ETSN who builds a 30-minute daily study habit before the cycle is announced is the ETSN who sits the exam with actual coverage of the material rather than a one-week cram.
  • NAVPERS 18068 Vol II — Manual of Navy Enlisted Manpower and Personnel Classifications (NEC catalog)
    Read the NEC catalog entries for NEC 1426 (ET-Radar), NEC 2791 (Combat Direction Systems Technician), and NEC 2879 (Aegis Weapons System) before the six-month mark — not as a commitment, but as an informed basis for the NEC conversation with the LCPO and career counselor. The catalog entry describes the source rating requirements, school pipeline, and qualification requirements the NEC requires. If you are considering the submarine track, the NAVADMIN governing nuclear program recruiting is the parallel document.
  • The ship's PQS program binder and 301-series watch qualification checklist for your ship type
    The 301-series checklist is ship-type specific and the PQS program binder is the governing document for qualification progression at your command. These are not Navy-wide publications but command-controlled documents — ask the LPO for the current version on your first working day. The watch qualification board uses this document to frame the questions; the ETSN who has read it completely shows in the board performance and the ETSN who has not also shows.

Standards — How to Hit Each

  • PQS completion and 301-series watch quals signed on the LCPO's timeline — the slow ETSN who drags PQS becomes the slow ET3 candidate at the next NWAE cycle.
    Set a PQS milestone calendar with the LPO during the first week — section by section, completion date by completion date — and review it at monthly counseling. When a section is delayed, bring the reason and a revised date to the LPO before he asks. The ETSN who manages the PQS schedule proactively is the one the LPO signs off without pushing; the one who waits gets the 'why isn't this done' conversation at 0730 on a Monday.
  • PMS completion rate at or above work-center average — deferred MRCs with your initials are the first thing the 3-M coordinator reads on an ISIC visit.
    Track your assigned MRCs on a personal log — not just OMMS-NG — so you know which cards are due before the weekly PMS meeting. Deferral requests need the LPO's authorization before the due date, not after. When you complete a card and the result is out of tolerance or the system shows a fault, open the CSMP discrepancy the same day. The 3-M coordinator can see whether a discrepancy was opened the same day as the MRC completion or three days later.
  • PRT Good Low or higher; BCA in standard from the first official cycle.
    The PRT standard at E-1 through E-3 is the floor, not the goal. Build a real physical training program — three run days per week minimum, two strength sessions — before your first official PRT cycle. The senior ETs on the deckplate notice the junior who shows up for PT and the one who shows up for quarters only. Failure on the PRT or BCA at this rank draws command attention out of proportion to the paygrade and starts a counseling chain the advancement board reads.
  • NWAE study habit established before the cycle opens: BIB pulled from MyNavyHR / NETC, daily study block on the calendar.
    Pull the BIB on or before the 90-day mark and identify the sections that map to the systems you are maintaining — this is the material you are already building familiarity with on the bench. Build a 30-minute daily study block into the evening routine. The ETSN who runs 90 days of daily BIB study before the cycle opens passes the NWAE on content; the one who crams the last two weeks passes on luck — if at all.
  • At least one system-specific operator qualification signed before the six-month mark.
    Request the qualification board before the LPO asks where it is. Identify which system in your work center has an operator qualification that does not require an advanced PQS board, prepare by running through the evolution with a senior ET as your evaluator during a training period, and schedule the board with the LPO at the five-month mark. The ETSN who requests the board is the one the LPO notes on the next evaluation period; the one who waits to be asked does not get noted the same way.

Technical Mistakes — Concrete Consequences

  • Substituting a fuse with the wrong amperage rating because the correct one is not on the truck.
    An over-rated fuse fails to protect the circuit it is supposed to protect; an under-rated fuse trips under normal operating current and creates a phantom fault pattern the LPO spends three hours tracing. Either way, your name is on the 3-M corrective action and the CSMP discrepancy, and the combat systems officer is reading the timeline on why the equipment was down for six hours on a casualty that should have taken forty-five minutes. The correct part number and the wait for the right fuse is always the right answer.
  • Skipping the equipment warm-up time specified in the TM because the watch team wants the radar up fast.
    Magnetrons, traveling wave tubes, and high-power amplifiers cycle cold with thermally stressed components that fail early. The TM warm-up requirement is not a suggestion — it is a protection measure for equipment that costs more than your annual salary. When the transmitter fails during the next operational period and the investigation asks why the warm-up was bypassed, 'the watch team was in a hurry' is not a defense. The TM number and procedure step is the defense; not having followed it is the finding.
  • Working on energized equipment without the required ESWP tag-out per NSTM Chapter 300.
    The voltage on a navigation radar magnetron or a high-power amplifier power supply is lethal. NSTM Chapter 300 and the ship's ESWP program exist because sailors died before the procedures were written. An ESWP violation is an immediate safety finding, a command-level incident, and depending on outcome, a criminal investigation. The tag-out log entry takes five minutes; the investigation after a contact injury takes six months and ends careers — sometimes permanently and fatally.
  • Logging a PMS MRC as 'completed' when you only executed part of the procedure.
    OMMS-NG logs the completion time, the ISIC inspector reads the MRC alongside the system performance data, and the 3-M coordinator can request the paper MRC card. When the falsified completion surfaces — and it surfaces — the finding is not a paperwork error: it is a fraudulent official record, NJP-level, with a service record notation the advancement board reads at every subsequent cycle.
  • Telling the OOD the radar is 'probably fine' based on a visual check when the TM requires a calibration verification.
    The OOD puts your assessment in the OOD log and briefs the navigator. When the system degrades during a restricted-water transit and the investigation asks what check was run before the bridge was told the system was operational, 'I looked at it and it seemed fine' is the answer that ends the ETSN's career trajectory and starts the OOD's. Run the TM operability check, log the result, and deliver the answer: 'Operational per the operability procedure, log entry complete.' That is a defensible statement. 'Probably fine' is not.

Career Decisions at This Rank

  • NEC pipeline selection — surface ET track (1426 radar, 2791 combat direction systems, 2879 Aegis) versus submarine track (Nuclear Power School)
    The submarine track is the highest-commitment, highest-differentiation path in the ET rate. Nuclear Power School in Goose Creek, SC is a six-month academic program at a college-level physics and reactor-systems pace; Basic Enlisted Submarine School in Groton, CT follows. The submarine community carries a distinct qualification culture, a sea-shore rotation structured around submarine patrols, and a post-service market that values nuclear operations experience at a premium. It is also a volunteer program — you cannot be assigned to it, only selected. The surface NEC tracks (1426, 2791, 2879) are the majority path: A-school graduates to a surface fleet assignment, one NEC earned at C-school, billet pipeline defined by the NEC. The Aegis path (2879) is the highest-profile surface track — SPY-1 system maintenance and operation is complex, the billets are on the Navy's most capable combatants, and the technical credentialing is strong. Before committing to any path, talk to at least one ET who has been through each pipeline you are considering. Pull the current NAVADMIN for the path; NEC availability, school pipelines, and incentive structures change.
  • First re-enlistment — stay or separate at the end of the first contract
    The ETSA/ETSN who is performing well will face the first re-enlistment decision inside the first contract. The honest analysis: the ET rate's technical foundation — electronics troubleshooting, radar systems, combat direction systems, navigation electronics — translates to the defense and civilian technical market in ways that are real but require credential documentation to capture. The NEC-coded ET2 or ET1 with Navy COOL credentials and a security clearance is a strong candidate for defense contractor electronics roles, NAVSEASYSCOM civilian positions, and commercial electronics careers. The question is not whether the civilian value exists — it does — but whether you have built the credential stack that captures it by the time you separate. The ETSN who separates at the end of a first contract without a NEC, without warfare device, and without Navy COOL credentials is leaving most of that value on the table. The ETSN who re-enlists, earns the NEC, earns the device, and builds the credential foundation is in a fundamentally stronger position at separation. Run the math on the specific civilian opportunity you have — not a hypothetical — before deciding.
  • Warfare device — EAWS, SW, EXW, or platform-specific device — and when to start the PQS
    The warfare device at E-3 feels premature; it is not. The qualification program takes months and the LPO's endorsement is required for the board. Starting the PQS at the twelve-month mark means the device can be pinned before the ET3 NWAE cycle opens — and the eEVAL entry for a pinned warfare device at E-3 is a strong advancement bullet the senior rater can defend. The ETSN who waits until ET3 to start the warfare device PQS is the ET3 who is still working on it when the ET2 NWAE cycle arrives. Surface Warfare Specialist (SW) is the most common for surface ship ETSNs; the relevant qualification for your platform type is the one to start. Ask the LPO which device the billet requires and start the PQS in the second half of the first year.

How the Seat Varies by Unit Type

  • Aegis DDG / CG (surface combatant, Arleigh Burke or Ticonderoga class)
    The Aegis platform is the most technically demanding surface ET assignment. The AN/SPY-1 radar and the MK-7 Aegis combat system are the most complex electronics suites in the surface Navy, and the work center operates at a higher maintenance tempo and a higher inspection scrutiny than non-Aegis platforms. The ETSN on an Aegis combatant will be surrounded by NEC 2879-coded senior ETs and will be working toward that NEC pipeline from the first month. The INSURV and ISIC inspection standard is high; the technical competence required of the ETSN is correspondingly demanding. The advantage: the technical credential value of Aegis experience is recognized in the defense market at a premium.
  • LHA / LHD / LPD (amphibious ship)
    Amphibious ship electronic systems are diverse — aviation navigation, ship navigation, combat systems support, and interior communications — and the work center serves a large crew with a broad equipment baseline. The inspection tempo can be lower than an Aegis combatant, but the breadth of systems the ETSN is expected to maintain PMS on is wider. Aviation operations integration is a distinct characteristic of LHA/LHD assignments — electronic systems that support aviation operations have a parallel maintenance and safety culture. The ETSN on an amphibious ship builds broad-baseline familiarity across multiple system types early.
  • LCS (Littoral Combat Ship)
    LCS assignments put the junior ET in a smaller crew, smaller work center, and a higher individual-contribution environment than a large surface combatant. The smaller crew means the ETSN is visible to senior leadership faster — positively and negatively. The LCS electronic systems suite is modular-mission-package dependent and technically interesting, but the smaller division means less depth of senior ET mentorship on any given day. Self-directed learning is more important at an LCS assignment than at a large DDG with five ET2s on the bench.
  • Shore command / FTSC detachment / training command
    A first tour at a shore command or Fleet Technical Support Center detachment is less common for ETSNs but does occur through detailer assignment. The maintenance environment is different — systems may be in a training or depot configuration rather than an operational ship configuration — and the PQS and watchbill qualification landscape is different from afloat. The career implication: an ETSN who spends the full first tour at a shore command will be behind the career curve on sea-duty qualification credits and operational experience compared to peers with first-tour afloat assignments. Shore-duty credit math matters at re-enlistment and NEC selection.

What Good Looks Like at This Rank

The good ETSN is invisible the right way. The LPO can predict his PQS milestone dates because they were agreed in counseling and met on schedule. His OMMS-NG completions log the same day as the maintenance action, with result entries that reflect what actually happened — including the out-of-spec reading that became a CSMP discrepancy opened before end of business the same day. The senior ETs do not have to send him back to rerun a step or add a result to a blank field. When the LPO gives him a fault, he comes back with a TM reference and a diagnosis, not a shrug. He has not guessed at a system operability status and told the OOD the result. His personal conduct is below the command's radar — not invisible because he is hiding, but because there is nothing to see. He shows up on time, he does not have financial counseling flags, he stays out of the barracks drama, and he runs PT without needing to be told. The senior ETs notice the junior sailor who takes care of his own business; they also notice the one who cannot, and the LCPO hears about both by the end of the first month. By the nine-month mark, the ETSN who is performing this way has a NEC preference on record, a NWAE BIB study log the LCPO can see, and a watch qualification signed. The LPO is asking him which NEC pipeline he is pursuing — not because the question is required, but because the answer is already forming and the LCPO wants to shape it before the career counselor does. That is the ETSN who becomes the ET3 the work center misses when he transfers.

Preview — The Next Rank

ET3 (E-4) is the first petty officer grade — and it changes the job in ways that are not immediately obvious from the ETSN seat. The crow on the sleeve means the OOD pages you by name when the radar goes down at 0300, and at least one ETSN is watching whether you actually know what to do when you get there. The social dynamic in the work center shifts: you are no longer the most junior person in the room, and the LPO's expectation is that you are actively developing the ETSN who just checked in. The technical demand increases at ET3. You are expected to own assigned systems — not just execute PMS on them, but know the fault-isolation tree, the calibration requirements, the CSMP entries associated with the equipment, and the parts pipeline. The LPO will send you to the casualty first before calling the ET2. 'I am not sure' is acceptable at ETSN; at ET3 it is the answer that determines whether the LPO starts pulling the ET2 into the evolution instead of you. The NEC decision becomes real at ET3. The C-school pipeline for NEC 1426, 2791, or 2879 is a multi-month school commitment that shapes the next billet assignment and the next five years of the sea-shore rotation. The submarine track decision, if it was not made at ETSN, is due by ET3. The career counselor conversation at ET3 is the one with actual options and actual consequences — the earlier you have the information, the better positioned you are to make the decision on your terms rather than the detailer's.
FAQ

ET E1-E3 — Frequently Asked Questions

Q01What does a E1-E3 ET (Electronics Technician) actually do?
Fresh out of A-school at the Center for Information Warfare Training (CIWT), Corry Station, Pensacola, you check aboard a surface combatant, an amphibious ship, or a shore command — and you start at the bottom of the 3-M system.
Q02What's the most important thing to know as a E1-E3 ET?
The rate will hand you a multimeter, a stack of PMS MRCs, and a space full of equipment you have never seen — and expect you to produce on all three simultaneously.
Q03What does a typical day look like for a E1-E3 ET?
Time-blocked day at the E1-E3 ET rank tier: 0530-0630 Command or divisional PT. Electronics work centers run PT with the combat systems department or the division — formation run, interval training on the pier, or hangar deck. No falling out. The senior ETs track who shows up, 0630-0730 Hygiene, chow, utilities on. Pre-quarters: pull OMMS-NG and check which MRCs are due today, verify there are no overnight equipment fault reports that need a 3-M entry before quarters, check the tag-out log for any active tags in your work center that affect morning maintenance, 0730-0800 Quarters.…
Q04What mistakes get E1-E3 ET soldiers fired or relieved?
DUI or alcohol-related incident at ETSA/ETSN. This is not a stumble — it is a career-defining event at this rank. NJP under Article 111 UCMJ, Page 13, possible discharge characterization impact, and a flag on the security clearance investigation that follows the record for years. The rate takes electronics clearances seriously; a substantiated alcohol incident at E-2 is still in the background investigation at E-6; OPSEC violation involving shipboard electronics system capabilities,…
Q05What career decisions matter most at the E1-E3 ET rank tier?
NEC pipeline selection — surface ET track (1426 radar, 2791 combat direction systems, 2879 Aegis) versus submarine track (Nuclear Power School) — The submarine track is the highest-commitment, highest-differentiation path in the ET rate. Nuclear Power School in Goose Creek, SC is a six-month academic program at a college-level physics and reactor-systems pace; Basic Enlisted Submarine School in Groton, CT follows. The submarine community carries a distinct qualification culture, a sea-shore rotation structured around submarine patrols,…
Q06What's next after E1-E3 for a ET (Electronics Technician) in the Navy?
ET3 (E-4) is the first petty officer grade — and it changes the job in ways that are not immediately obvious from the ETSN seat.
Q07What manuals and regulations does a E1-E3 ET need to know cold?
NSTM Chapter 320 — Electronics; NSTM Chapter 300 series (Electric Plant) as applicable to your equipment baseline — the technical manual backbone for every surface ET.; NAVSEA / NAVSEAINST technical manuals for the specific systems in your work center: AN/SPS-67 Surface Search Radar TM, AN/SPS-48E TM, AN/SPY-1 Aegis Weapons System documentation (via SWOS/NAWS).; OPNAVINST 4790.4 — Ships 3-M Systems Procedures (the rule book for every PMS card you execute;…

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Published by the Honest MOS Editorial DeskVerified against DoD/.gov sourcesUpdated May 2026Editorial standards