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COMEX Tables

Compagnie Maritime d'Expertises — World pioneer in professional diving

Professional Industrial Saturation Offshore

⚠️ Warning — Professional tables for qualified divers only. For informational purposes only. Any operational use must follow official procedures under a professional dive supervisor.

COMEX — Founded in 1961

Founded by Henri-Germain Delauze, COMEX is a world reference in professional diving and subsea engineering.

Fields of application

  • Intervention diving — 0 to 60 metres, standard operations
  • Deep diving — 60 to 120 metres, Heliox/Trimix
  • Saturation diving — Extended stays in hyperbaric chambers
  • Offshore work — Oil platforms, pipelines

Access to tables

COMEX tables are copyright-protected and available through:

  • Accredited professional diving training programmes
  • Directly from COMEX for companies
  • Professional diving manuals

Official COMEX website →

Understanding COMEX Tables

COMEX tables were developed by the Compagnie Maritime d'Expertises, founded in 1961 in Marseille by Henri-Germain Delauze. A world pioneer in deep diving and saturation, COMEX designed its own decompression protocols for offshore industrial operations, underwater construction, and deep rescue operations.

Fields of application

COMEX tables are used for industrial professional diving: inspection and maintenance of offshore structures (oil platforms, pipelines, offshore wind farms), underwater civil engineering (cable laying, hyperbaric welding, cutting), and saturation operations for work exceeding 50 metres depth over extended durations.

Key characteristics

Unlike MN90 tables (recreational) and MT2019 (regulatory professional), COMEX tables are proprietary, derived from decades of hyperbaric medicine research. They incorporate saturation-desaturation profiles specific to industrial constraints: intense physical exertion, cold exposure, prolonged operations, and ascents via diving bells.

FAQ — COMEX Tables

What is the difference between COMEX and MT2019?
MT2019 are the French regulatory tables for professional diving, published in the Official Journal. COMEX tables are proprietary, developed by a private company for its own industrial operations. Both are used professionally, but MT2019 have legal force in France while COMEX tables are an international industrial standard.
What is saturation diving?
In saturation diving, the diver lives in a pressurized habitat at working pressure for days or weeks. Their tissues become fully saturated with gas. They descend to work via a diving bell and return to the habitat without intermediate decompression. The single final decompression can last several days. This technique enables work at great depths (100-300m) over extended periods.
Can COMEX tables be used for recreational diving?
No, COMEX tables are not suitable for recreational diving. They are designed for specific professional conditions with industrial equipment (surface-supplied gas, diving bells, hyperbaric chambers). For recreational diving, use MN90 tables or a dive computer. For professional diving in France, MT2019 tables are the legal standard.