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NDE5

Navy Diver

E-5 (Sergeant) · Navy

E1–E3E-4E-5E-6E-7E8–E9
HEADS UP

ND2 is where the First Class Diver NEC becomes a career-defining obligation, not a career aspiration. The LCPO can see who is building toward it and who is not. Without it, the ND1 packet does not close properly, the Chief board reads the gap, and the career path stalls. Start the deep-air dive accumulation and the supervisor qualification line items now — the log hours required do not accumulate on their own.

The Honest MOS Read
Hospital Corpsman Second Class — sorry, Navy Diver Second Class (ND2, E-5) is the rating's first real petty officer tier where leadership responsibility and technical responsibility land at the same time. The ND3 was evaluated on self-discipline and basic competence. The ND2 is evaluated on whether the section can function around them. The operational work at ND2 is broader than at ND3. You plan and brief dive evolutions as the dive supervisor under the DIVO — you write the dive plan, brief the hazard assessment, post the standby diver, run communications, and sign the post-dive log. For smaller evolutions, the plan has your name on the supervisor line. The DIVO's signature on that plan depends on your brief being clean, your decompression profile selection being defensible, and your abort criteria being real — not the copy-paste from last week's evolution. For major ship husbandry jobs like UWILD (Underwater Inspection in Lieu of Drydocking), you are the survey diver whose measurements and written report go to the ship's commanding officer. An incomplete survey form or a measurement error produces a ship maintenance recommendation that may be acted on. Own the form. The ND3s and NDFAs in your section come to you before they go to the senior diver on routine questions. That is not an honor — it is a responsibility. The qual sign-offs you give on their PQS carry your standard, not a relaxed version of it. The ND3 who cannot perform the evolution you signed off on is your problem, and the NDC who asks about it is asking you first. The First Class Diver NEC is the near-term qualifying gate that the entire ND career arc runs through. The PQS requires sustained log accumulation across multiple system types, demonstrated proficiency at the supervisor level, and specific deep-air and saturation-exposure experience requirements. None of this accumulates without intentional planning. The ND2 who builds the First Class Diver qualification into every operational cycle — requesting the deep-air dives, completing the supervisor qualification line items during actual unit evolutions — is the ND2 who closes the qualification in a reasonable timeline. The ND2 who waits until the First Class Diver conversation becomes urgent has already lost two or three years. The NWAE for ND1 is running in the background. The BIB is published per exam cycle; pull it from MyNavyHR, build a study schedule with milestones, and own the timeline. The Chief selection board is the long view but the ND1 NWAE is the near-term gate and the candidate who walks in cold walks out waiting for the next cycle. At the unit cultural level, the ND2 is the petty officer the junior divers are watching — not the chief, not the DIVO, but the most accessible senior who has already done what they are trying to do. How you run the gear check, how you write the dive log, and how you handle the post-dive medical screening is the standard the section adopts.
Career Arc
  • 01ND2 pin-on and transition to dive supervisor responsibilities — first dive plan written and briefed to the DIVO within 90 days of making rank.
  • 02First Class Diver PQS active with documented deep-air dive accumulation on the section's training schedule — not background work, not 'when there's time.'
  • 03NWAE BIB for ND1 cycle pulled and milestone study plan built within 60 days of ND2 pin-on.
  • 04First UWILD or major ship husbandry evolution as the survey diver — written report to the ship's CO, measurements accurate, form complete.
  • 05ND3/NDFA qual sign-offs begin — your standard, not a reduced version of it.
  • 06Section gear maintenance account managed — discrepancies caught before the DIVO finds them.
  • 07ND1 NWAE cycle and advancement results — advance or adjust the study plan from the exam feedback.
Common Screwups
  • ×DUI / NJP at this rank — the ND2 who cannot manage personal conduct is the petty officer the Chief board reads as a liability, not an asset. In the diving community the safety culture expectation extends to personal conduct because the senior divers believe they correlate. One NJP at ND2 produces an evaluation mark that follows the record to every board.
  • ×Signing off PQS line items you did not witness. The ND3 who cannot perform the evolution you certified is your problem in front of the NDC and the DIVO. In a safety-critical community, a fraudulent qual sign-off is an integrity issue and a safety hazard simultaneously.
  • ×Building a dive plan around the weather window or the schedule deadline instead of the decompression profile. NAVSEA SS521-AG-PRO-010 table requirements do not flex for a commanding officer's departure timeline; the DIVO can brief the CO on the delay, but the ND2 does not own that conversation.
  • ×Letting gear maintenance slide because the unit is deployed and parts are on order. A documented, flagged, workaround-planned out-of-service item is a manageable problem. An undiscovered equipment failure during a dive evolution is a safety failure with a JAGMAN attached.
  • ×Under-reporting post-dive symptoms because the evolution went long and you do not want to be the PO2 who creates a medical event. DCS that goes unreported at the ND2 level sets the unit culture — if the supervisor does not call it, neither will the ND3s watching.

A Day in the Life

  • 0530-0630PT formation. Unit PT — runs, pool sessions, calisthenics. ND2 is expected to lead or at minimum set the physical standard for the junior divers in the section.
  • 0630-0730Shower, chow, transit to the dive locker. Morning quarters — accountability, plan of the day, any overnight readiness issues raised to the LCPO.
  • 0730-0845Dive plan preparation for the day's evolution — hazard assessment, decompression profile selection, standby diver brief, abort criteria. The plan is complete before the DIVO brief begins.
  • 0845-0930Pre-dive brief — walk the DIVO and the dive team through the plan, standby diver assignment confirmed, comms check, abort criteria verbalized.
  • 0930-1200Dive evolution — working diver or supervising the evolution from the surface, depending on the job. Post-dive log entry completed before any other task.
  • 1200-1300Chow. BIB review for 20-30 minutes during the break — not optional on NWAE study weeks.
  • 1300-1530Afternoon work: additional dive evolutions, gear maintenance cycle, ND3 PQS training, equipment account review, or administrative work (eEVAL input collection, medical readiness tracking).
  • 1530-1700Post-evolution gear maintenance, dive log final review, section tracker update. The ND2's log review catches the ND3's incomplete entry before it becomes a discrepancy.
  • 1700-1800Admin period — NWAE study, First Class Diver PQS review, personal correspondence, professional reading.
  • 1800-2100Chow, personal time, additional study. The ND2 who is advancing early is spending 45 minutes of this window on the BIB.
  • 2100-2200Rack maintenance, equipment prep for the next day. The dive plan for tomorrow's evolution starts tonight if the evolution is complex.

Weekly Cadence

The ND2 week runs on two parallel tracks: the unit's operational and training schedule and the ND2's personal qualification build. Monday carries the administrative weight — plan of the week briefed, section gear account reviewed, any previous week's discrepancies closed. Tuesday through Thursday are the highest-density dive operation and training days. Fridays are post-week log finalization, equipment checks, and any make-up training items. What changes the week most is an operational tasking — a ship husbandry job, a salvage response, an emergency support request. When those arrive, the ND2's job is to produce a working dive plan quickly and accurately, not to manage the schedule disruption. The ND2 who can write a clean dive plan on two hours' notice is the one the DIVO calls when the callout comes. The First Class Diver qualification build runs in the background of every week. It is not scheduled as a dedicated event most weeks — it is built into normal operations by requesting the deep-air dives on the training schedule, completing the supervisor qualification factors during actual unit evolutions, and asking the NDC to sign PQS items during real work. The ND2 who can articulate exactly how many deep-air dives are on the log and which PQS items remain is the ND2 the LCPO sees as professional. The ND2 who cannot answer that question when asked is visible for the wrong reason.

Key Skills — How to Drill Each

  1. 01
    Plan and brief a dive evolution as the dive supervisor — hazard assessment, decompression profile selection, standby diver brief, abort criteria, post-dive log.
    The dive plan is a working document, not a template. Write the hazard assessment from the actual site conditions — currents, visibility, bottom composition, overhead environment, expected task duration. Select the decompression profile from NAVSEA SS521-AG-PRO-010 tables for the planned depth and bottom time; identify the no-decompression limit and the contingency decompression schedule if the bottom time exceeds the no-deco limit. Brief the abort criteria explicitly — what specific condition (loss of communications, diver-in-distress signal, gas pressure below X, current exceeding Y) triggers a wrap, and who gives the call. The DIVO signs the plan; if the DIVO has to rewrite it, the ND2 is not ready to supervise.
  2. 02
    Execute a UWILD as the survey diver — hull condition assessment, propeller measurement, shaft alignment check, rudder documentation.
    Read the previous UWILD report for the ship before the dive — the baseline measurements, the known deficiencies, and the areas of interest the ship's force has flagged. Bring the underwater survey form on a slate and fill it during the dive, not after. Propeller blade measurements are dimensional (pitch, chord, erosion depth) and require a specific underwater gauge set; practice with the gauges on deck before the water. An incomplete field or an estimated measurement in the hull-condition section is the measurement the maintenance contractor acts on incorrectly. Own the form completely.
  3. 03
    Operate and supervise a salvage recovery with a controlled lift — rigging plan, air-lift or crane-assist coordination, load monitoring.
    The salvage rigging plan is built from the survey data and reviewed with the NDC or salvage officer before any lift is authorized. The ND2 supervising the lift understands the plan well enough to call a stop if an in-water condition (unexpected weight distribution, rigging point failure, current shift) requires a reassessment before the lift proceeds. Practice the air-lift calculation (lifting force vs. object weight, buoyancy factors) in the classroom before you need it in the water under time pressure.
  4. 04
    Conduct underwater cutting and welding to ship husbandry and salvage repair standards — flat, overhead, and confined-space positions.
    Flat-plate proficiency from NDSTC is the starting point; overhead-position cuts and confined-space cutting are the ND2-level evolutions. The confined-space underwater cut has a written brief requirement because the abort criteria (gas supply, communications, clearance dimensions) must be explicit before the diver enters. Run through the confined-space brief format with the NDC or ND1 before the first evaluation so the format is automatic when the DIVO reads it.
  5. 05
    Train ND3s and NDFAs — equipment rigging, tending procedures, dive log requirements — to the senior diver standard.
    The standard you demonstrate during training is the standard the junior divers will reproduce in the water when you are not watching. Run the gear check the same way every time in front of them — no shortcuts. For dive log entries, check the ND3's log at the end of every evolution and correct entries that are incomplete or estimated before the habit is established. The ND3 who comes up behind you with good log discipline is the ND3 you want on the umbilical when you are in the water.
  6. 06
    Manage the unit's dive equipment maintenance schedule for assigned section — Mark 21, KMB-18, umbilicals, gas handling — with records current.
    Build a section-level maintenance tracker (equipment item, last service date, next service window, current status) and review it weekly. Discrepancies go to the ND1 the day they are identified, not at the end of the month. The out-of-service item that shows up on the DIVO's log review without a prior report is the ND2's credibility problem. The maintenance tracker the DIVO can review without asking for it is the ND2's credibility asset.

Manuals & References — What Chapters Matter

  • NAVSEA SS521-AG-PRO-010 — U.S. Navy Diving Manual.
    At supervisor level, own Chapter 8 (surface-supplied operations), Chapter 15 (mixed-gas diving if your unit operates it), Chapter 18 (ship husbandry), Chapter 21 (salvage and recovery), and the full decompression table suite including the air decompression tables, no-decompression limits, and the Table 5 and 6 recompression treatment procedures. The DIVO comes to the ND2 with the non-standard evolution question; the ND2 who has to find the reference at that moment is behind.
  • OPNAVINST 3150.27 — Navy Diving Program.
    Supervisor-level knowledge of unit certification requirements, dive log audit procedures, diving medical officer relationship, and the program inspection criteria. At ND2 you are managing the section's compliance posture, not just your own.
  • NAVSEA S9522-AA-HBK-010 — Diver's Handbook of Oceanography.
    Environmental planning reference — currents, visibility conditions, thermoclines, tidal effects on dive operations. The hazard-assessment section of your dive plan is only as good as your understanding of the site environment. This handbook is the systematic reference for conditions you will not always be able to survey before writing the plan.
  • MILPERSMAN 1220-410 — Navy Diver service obligations, NEC award, and qualification policies.
    First Class Diver eligibility requirements, saturation diver pipeline prerequisites, and the Master Diver program entry criteria are in here. The ND2 who reads this before the career counselor visit is the one who builds a realistic NEC qualification plan instead of a wishful one.
  • NAVPERS 18068 Vol II — NEC catalog.
    The saturation diver NEC (L26A) source-rating requirements and the Master Diver NEC (O65A) entry requirements are live in this catalog. Verify the current requirements from the catalog, not from memory of what the ND1 told you two years ago — NEC requirements change.
  • NWAE Bibliography for ND1 cycle — pulled from MyNavyHR / NETC.
    The BIB is the exam cycle's study guide and the topic-weight map. Pull the current cycle BIB and build the study schedule against the weighted topics. The ND2 who treats the BIB as optional background reading is the ND2 who advances in cycle 3 instead of cycle 1.

Standards — How to Hit Each

  • First Class Diver PQS actively under construction and visible on the LCPO's qualification tracker.
    The First Class Diver qualification has log-hour requirements, system-proficiency demonstrations, and supervisor-level practical factors. Build each requirement into the unit's scheduled operations — request the deep-air dives on the training schedule, complete the supervisor factors during actual unit evolutions. The LCPO does not need to ask how far along you are; the tracker shows it.
  • Dive supervisor qualifications current per OPNAVINST 3150.27 and unit SOP.
    The dive supervisor qualification is separate from the diver certification currency requirement. Know both and track both. The ND2 who loses supervisor currency between major units requires a re-qualification event the DIVO and NDC have to schedule — which means fewer supervised evolutions on the ND2's record.
  • NWAE for ND1 on a documented study plan with milestones.
    Pull the current BIB, identify the high-weight topics from the bibliography structure, and block weekly study windows with specific topic coverage targets. Study windows should be no smaller than 30 focused minutes — 10-minute phone sessions do not move the needle on decompression physics or diving medical knowledge.
  • PRT at Good High or better; dive medical exam current; annual dive currency maintained without lapse.
    Good High is the informal peer expectation in the ND community at the ND2 level — the section chief expects the petty officer who is supervising dives to be physically ahead of the junior divers. Schedule the annual dive medical exam before the deadline, not at the deadline.
  • Section gear maintenance and log audit rates clean — discrepancies caught by the ND2 before the LCPO finds them.
    Review the maintenance tracker weekly. Walk the equipment before the DIVO's equipment inspection, not after the notification. A discrepancy caught by the ND2 and proactively reported is evidence of a competent LPO-in-development; a discrepancy caught by the DIVO is evidence of an inattentive one.

Technical Mistakes — Concrete Consequences

  • Signing off an ND3's PQS line item without witnessing the performance.
    The qual sign is the ND2's professional assertion that the ND3 can perform the evolution to standard. If the senior diver observes the ND3 fail an evolution the ND2 certified, the NDC's next conversation is with the ND2. A fraudulent qual sign in the ND community is an integrity violation and a safety hazard — the ND3 will be in the water on that evolution.
  • Building the dive plan around the schedule window rather than the decompression profile.
    NAVSEA SS521-AG-PRO-010 decompression table requirements are not flex items. The DIVO's job is to brief the CO on schedule changes; the ND2's job is to produce a dive plan that is safe. A plan that compresses the decompression profile to meet a launch window is a plan that produces a DCS hit — and the JAGMAN goes to the person who signed the dive plan.
  • Conducting a confined-space underwater cut without a written brief and explicitly stated abort criteria.
    Confined-space underwater cutting is the highest-risk evolution in the standard ND repertoire. A diver who enters a confined space without the tending petty officer knowing the abort criteria in explicit terms is a diver whose emergency extraction depends on improvisation. The brief requirement exists because improvised rescue in a confined underwater space kills people.
  • Allowing gear maintenance to slip to the end of the deployment cycle.
    NAVSEA equipment maintenance intervals are not administrative guidelines. An out-of-service Mark 21 helmet at the start of an emergency salvage callout requires the DIVO to brief the commanding officer on capability limitations before the mission begins. The ND2 whose maintenance records show the item was overdue before the callout is the ND2 the investigation starts with.
  • Under-reporting post-dive physical symptoms because the schedule is tight.
    DCS that goes unreported at the ND2 level produces a treatment delay that converts a Type I presentation (pain-only) into a Type II (neurological). The ND2 who does not call it also sends a signal to every ND3 and NDFA in the section that under-reporting is acceptable — and that signal does not stay with just one evolution.

Career Decisions at This Rank

  • First Class Diver qualification timing — accelerate vs pace to deployment cycle.
    The First Class Diver NEC is the career gate between ND2 and a competitive ND1 / Chief board profile. The log-hour requirements are substantial and the practical evaluations require access to specific equipment and diving conditions that are not available at every billet. The ND2 who accelerates the qualification build — requesting the deep-air dives on the unit's training schedule, asking for the supervisor evaluations during actual operations — closes the qualification years earlier than the one who waits for it to come to them. The NDC has seen both versions of this story and knows which ND2 will be competitive.
  • Saturation diving pipeline — pursue it now or defer.
    Saturation diving (NEC L26A) is a specialized qualification with limited training access and real physiological demands. The pipeline requires specific assignment to a command with saturation capability (primarily civilian mixed-gas and SAT contractors operating alongside Navy assets, or specific Navy salvage assets). The ND2 who wants the NEC needs to discuss it with the detailer now because the assignment pipeline is not self-generating. The trade-off is real: a SAT-diving-focused tour may delay the First Class Diver completion or the Chief board preparation. Prioritize the First Class Diver gate first; pursue SAT after that gate is closed.
  • Shore duty vs sea duty at ND2 — which builds the better Chief board profile.
    The ND2's sea-shore rotation decision shapes the Chief board profile. Sea duty at MDSU or UCT builds operational dive hours, First Class Diver log accumulation, and the evaluation marks that show real supervisory performance. Shore duty (NDSTC instructor, NAVFAC support, recruiting) offers stability, professional development in a different context, and the work-life balance that matters more at some life stages than others. The honest assessment: for the Chief board, operational sea duty during the ND2 years builds the profile more directly than shore duty. If the First Class Diver qualification is incomplete, the shore duty conversation should be deferred.
  • Re-enlistment zone — stay ND through Chief or evaluate ETS options.
    The ND community's civilian market is real — commercial diving, offshore oil and gas, salvage operations, hyperbaric medicine, maritime construction. The ND2 with a First Class Diver NEC and MDSU/UCT operational time is marketable. The honest questions are whether the Chief board is achievable (physically, professionally, timeline-wise) and whether the ND community's career arc for the next 12 years is genuinely what the ND2 wants. The SRB for ND re-enlistment is the financial lever; the actual career satisfaction question is separate. Get both answered before signing.
  • eEVAL strategy — how to build the eval profile for ND1 competition.
    The NWAE BIB drives part of the advancement score, but the evaluation mark average (EMA) built through eEVALs drives the rest. At ND2, the evaluation is written by the ND1 or NDC but the content comes from the ND2's documented accomplishments. Track measurable outcomes — dive evolutions supervised, survey reports completed, equipment discrepancies caught and resolved, ND3 PQS items signed. Give the evaluator specific numbers and specific outcomes; do not rely on the evaluator to remember what happened. The ND2 who briefs their own eEVAL bullet points to the ND1 or NDC is the one who controls the narrative the board reads.

How the Seat Varies by Unit Type

  • MDSU (Mobile Diving and Salvage Unit 1 or 2)
    At ND2 in an MDSU, the operational dive evolution frequency is high and the mission variety is broad — ship husbandry, salvage, humanitarian assistance, emergency support. The First Class Diver log accumulation is fastest here. The supervisory responsibility at ND2 is real and immediate — MDSU does not have the bandwidth for passive ND2s.
  • UCT (Underwater Construction Team)
    UCT at ND2 means project-based construction and inspection diving — longer deployments, more sustained project work, and different NEC opportunities than MDSU. The supervisor role is real but the operational urgency profile is different from salvage response. The First Class Diver log accumulation is achievable but the mission set rewards different technical competencies.
  • Ship's diving locker or fleet diving detachment
    Dive hour accumulation is slower at a ship's locker billet than at MDSU or UCT. The ND2 at a ship's locker is often the senior diver in the section and carries the supervisory weight with less depth of support from other experienced divers. First Class Diver completion from a ship's locker billet requires intentional planning around when the deep-dive access is available.
  • NDSTC instructor or schoolhouse support
    An ND2 on instructor duty at NDSTC has visibility with the schoolhouse chain and develops training proficiency. The trade-off is operational dive hours — the log accumulation on an instructor billet runs slower than on an MDSU operational deployment. The First Class Diver completion timeline extends on an instructor billet unless the ND2 actively requests operational dives through the NDSTC diving program.
  • NAVFAC or contract diving support assignment
    Some ND2s receive NAVFAC construction support assignments with operational dive requirements. Mission sets and dive-hour accumulation vary by contract and project. Evaluate the specific billet's dive-log growth rate before accepting — not all NAVFAC support billets provide the operational variety needed to complete the First Class Diver qualification on a reasonable timeline.

What Good Looks Like at This Rank

The good ND2 is the petty officer the DIVO assigns as dive supervisor on the first real UWILD of a deployment because the dive plan was written before it was requested, the tending brief was specific, and the survey form came back with every measurement filled in. The commanding officer of the ship gets a report they can actually use. The good ND2's section has no maintenance discrepancies the LCPO finds first. The ND3s under them have two PQS line items signed that were not prompted by the chief — because the ND2 ran the evolutions with the PQS in hand and signed the items during normal operations. The First Class Diver log accumulation is visible on the section's qualification tracker. The concrete observable on the week the DIVO does an unannounced equipment check: the ND2's gear locker has a current maintenance tracker on the door, the discrepancy log is empty or has flagged items with documented workaround plans, and the DIVO does not have to ask questions. The junior divers in the section are working the same way — because they are watching how the ND2 runs it.

Preview — The Next Rank

ND1 (Petty Officer First Class, E-6) is the LPO rank — the leader of the section the DIVO names in the brief. The ND2 supervised smaller evolutions. The ND1 runs the complex ones and writes the eEVALs for the ND2s and ND3s who have to be competitive on the next advancement cycle. The difference is felt in the first month. The Chief board is the horizon at ND1 — not a distant aspiration but an active preparation project. The First Class Diver NEC is the gate that has to be closed before the Chief board packet is strong. The eEVAL profile the ND1 builds across their ND1 years is what the Chief board reads; the ND1 who does not track their own documented accomplishments and brief them to the evaluator does not control the record the board sees. The Master Diver qualification becomes a real professional conversation at ND1. The Master Diver is the most prestigious qualification in the Navy diving community — earned by fewer than 1% of designated Navy Divers — and the NDC who is working toward it is the one the Chief board reads as committed to the community's highest standard. The ND2 who starts asking the NDC about the Master Diver pathway at ND2 is the ND1 who arrives with the right questions already answered.
FAQ

ND E5 — Frequently Asked Questions

Q01What does a E5 ND (Navy Diver) actually do?
At ND2 you are a qualified diver with operational experience and a petty officer with ND3s and NDFAs in your section.
Q02What's the most important thing to know as a E5 ND?
ND2 is where the First Class Diver NEC becomes a career-defining obligation, not a career aspiration.
Q03What does a typical day look like for a E5 ND?
Time-blocked day at the E5 ND rank tier: 0530-0630 PT formation. Unit PT — runs, pool sessions, calisthenics. ND2 is expected to lead or at minimum set the physical standard for the junior divers in the section, 0630-0730 Shower, chow, transit to the dive locker. Morning quarters — accountability, plan of the day, any overnight readiness issues raised to the LCPO, 0730-0845 Dive plan preparation for the day's evolution — hazard assessment, decompression profile selection, standby diver brief, abort criteria. The plan is complete before the DIVO brief begins,…
Q04What mistakes get E5 ND soldiers fired or relieved?
DUI / NJP at this rank — the ND2 who cannot manage personal conduct is the petty officer the Chief board reads as a liability, not an asset. In the diving community the safety culture expectation extends to personal conduct because the senior divers believe they correlate. One NJP at ND2 produces an evaluation mark that follows the record to every board; Signing off PQS line items you did not witness.…
Q05What career decisions matter most at the E5 ND rank tier?
First Class Diver qualification timing — accelerate vs pace to deployment cycle — The First Class Diver NEC is the career gate between ND2 and a competitive ND1 / Chief board profile. The log-hour requirements are substantial and the practical evaluations require access to specific equipment and diving conditions that are not available at every billet. The ND2 who accelerates the qualification build — requesting the deep-air dives on the unit's training schedule,…
Q06What's next after E5 for a ND (Navy Diver) in the Navy?
ND1 (Petty Officer First Class, E-6) is the LPO rank — the leader of the section the DIVO names in the brief.
Q07What manuals and regulations does a E5 ND need to know cold?
NAVSEA SS521-AG-PRO-010 — U.S. Navy Diving Manual (own Chapter 8 surface-supplied ops, Chapter 18 ship husbandry, Chapter 21 salvage, and all applicable decompression tables at supervisor level).; OPNAVINST 3150.27 — Navy Diving Program (supervisor-level knowledge of unit certification requirements, log audit procedures, and diving medical officer requirements).; NAVSEA S9522-AA-HBK-010 — Diver's Handbook of Oceanography (environmental conditions: currents, visibility, thermoclines,…

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