Navy NEC · Engineering

840A Scuba Diver

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.

Overview

A SCUBA diver conducts day and night underwater searches, detailed ship bottom searches, and routine inspections using underwater compasses, depth indicators, and associated equipment. The diver adjusts and performs field shop maintenance on SCUBA equipment and underwater accessories and recognizes decompression sickness and diving accidents.

Core Skills

  • Day and night underwater searches
  • Ship-bottom searches and routine inspections
  • SCUBA equipment adjustment and field maintenance
  • Decompression sickness and diving accident recognition

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.

Commercial Divers

Underwater searches, ship-bottom inspections, and SCUBA equipment maintenance transfer directly to commercial diving work.

How to prepare: Have a prospective employer assess your existing qualifications and documented military training against the intended assignments: OSHA-covered work requires task-relevant equipment, diving-mode and emergency training or experience, CPR and first aid training, and diving physics and physiology training for personnel exposed to or controlling hyperbaric exposure. If pursuing ADCI cards, request an equivalency assessment before enrolling in additional schooling: its Entry Level classification requires 625 documented hours of formal instruction under ANSI/ACDE-01-2015 or a recognized equivalent, while its Air Diver classification requires at least 100 field days and 30 working dives as an Air Diver, with only surface-supplied dives counting toward that classification.

What the civilian work involves
  • Take appropriate safety precautions, such as monitoring dive lengths and depths and registering with authorities before diving expeditions begin.
  • Check and maintain diving equipment, such as helmets, masks, air tanks, harnesses, or gauges.
  • Descend into water with the aid of diver helpers, using scuba gear or diving suits.
Civilian tools and software (examples)
  • Diving logbook software
  • Diving table software

Notes & Sources

  • For OSHA-covered commercial diving, an employer must withhold diving or other hyperbaric exposure during a known temporary impairment or condition likely to adversely affect safety or health.
Evidence for this guidance (4 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC 840A

    [1] NEC entry "840A - Scuba Diver"; cached text line 21960; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Day and night underwater searches, Ship-bottom searches and routine inspections, SCUBA equipment adjustment and field maintenance, Decompression sickness and diving accident recognition, Commercial Divers (O*NET 49-9092.00)

  2. O*NET: Commercial Divers

    [2] O*NET 30.3 occupational data

    Supports: Commercial Divers (O*NET 49-9092.00)

  3. OSHA 29 CFR 1910.410: Qualifications of dive team

    [3] Commercial Diving Operations, paragraphs (a) and (b). Verified 2026-09-24.

    Supports: Commercial Divers (O*NET 49-9092.00)

  4. ADCI: Commercial diver classification requirements

    [4] Entry Level and Air Diver card classifications. ADCI framework, not a universal government license. Verified 2026-09-24.

    Supports: Commercial Divers (O*NET 49-9092.00)

Defense contractor jobs for 840A

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

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