Navy NEC · Engineering

MMDV Master 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 Master Diver directs and supervises command diving, salvage, ship repair operations, and diving programs, with responsibility for training, equipment, systems, personnel, and operations. The Master Diver manages equipment development and certification, directs treatment of diving-related injuries and recompression chamber operations, oversees underwater inspections, rescue, demolition, and submarine diving systems, and qualifies personnel in diving procedures and equipment.

Core Skills

Diving equipment testing and certification oversight
Underwater cutting, welding, and demolition supervision
Submarine rescue and diver transfer systems supervision
Salvage and underwater ship repair direction

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

Directing underwater inspections, salvage, ship repair, and diving equipment maintenance provides directly relevant experience for commercial diving operations.

How to prepare: Assemble a project and dive-log portfolio documenting salvage, repair, equipment responsibilities, and diving methods for review with a commercial diving contractor.

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.
Obtain information about diving tasks and environmental conditions.

Civilian tools and software (examples)

Diving logbook software
Diving table software

Notes & Sources

Evidence for this guidance (2 documents)

NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC MMDV
[1] NEC entry "MMDV - Master Diver"; cached text line 8270; NAVPERS 18068F Vol II, 2026-07 edition
Supports: Diving equipment testing and certification oversight, Underwater cutting, welding, and demolition supervision, Submarine rescue and diver transfer systems supervision, Salvage and underwater ship repair direction, Commercial Divers (O*NET 49-9092.00)
O*NET: Commercial Divers
[2] O*NET 30.3 occupational data
Supports: Commercial Divers (O*NET 49-9092.00)

Defense contractor jobs for MMDV

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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