Hyperbaric & hypobaric pressure control expertise

(Compagnie Maritime d’Expertises)


World pioneer in the development of technologies for manned intervention and robotics in extreme environments

Comex’s DNA innovation


Created by Henri Germain DELAUZE (1929-2012), Comex was born from a passion: the sea and its riches, and from a vast project: pushing the limits of underwater work at extreme depths in safe conditions. perfect and by giving man the means to ensure the perfection of his work. Today, and after more than 60 years of existence, it is still the same passion that drives everyone in this formidable industrial and technological history. More than ever, Comex remains focused on the design, development and operation of innovative and high-performance systems, whether they are intended to be operated on land, at sea or in space.


Hyperbaric Test Center

Hypobaric Test Center

Test Pools



Hyperbaric vessel

Special Machines

Syringe Pumps : Comming soon

Design Office

fluid design office

mechanical design office

design office control commands

Comex News

Moon surface simulator

The hydrosphere is a vacuum chamber containing 3.5 tons of regolith simulant used to perform tests for missions on the lunar soil.

COMEX supports ESA astronaut training

The European astronauts are trained by ESA on the rules of engagement of EVAs, through underwater simulations inside the NBF

New generation of recompression chambers for the French Navy

Commissioning of the COMEX recompression chamber delivered to SEE MERRÉ to equip the first diving support vessel of the French Navy.

Rolex and Comex push further the limits of presssure together

Comex’s technical teams have been working with Rolex for many years. They design and maintain special automated pressure testing machines. These machines are used to validate the waterproofness and resistance of the famous Rolex watches

Altitude simulator

The Comex altitude simulator recreates pressure conditions at altitude. It is a reference tool for the aeronautical industry …

Hyperbaric assistance service for tunnel boring machines

 Tunnel boring machines (TBMs) are machines used to excavate tunnels in different types of soil ranging from sand to granite. With a wide range of sizes, they allow the construction of road, rail or navigation tunnels. They are also used for digging galleries, sewers...


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36, bd de l’OcĂ©an – CS 80143
13275 Marseille – Cedex 9 –

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