Military Atmospheric Diving (ADS)

The OceanWorks International HARDSUIT line of Atmospheric Diving Systems (ADS) and related deployment and tooling systems has become the modern standard in international military deep sea diving operations. The HARDSUIT™ has been used in operations by, or sold to the following international Navies:

Australia  • France  • Italy  • Japan • Russia  • Singapore  • Turkey  • United Kingdom  • United States



Military HARDSUIT™ ADS applications include:

The HARDSUIT™ ADS is the safest, most versatile deep diving system available for military and submarine rescue intervention use. It can be used for a wide variety of tasks in the full range of depth capability. These include but are not limited to:

  • Search
  • Salvage
  • Aircraft crash site investigation and recovery
  • Test weapons Recovery
  • Submarine Emergency Ventilation and Decompression System (SEVDS) deployment
  • Emergency Life Support Stores pod posting
  • Acoustic and degaussing range service and inspection
  • Harbour and defence infrastructure inspection
  • DISSUB escape and rescue support
  • Equipment deployment and recovery
  • Mine countermeasures support​

Our ADS technology has consistently evolved since its initial release in 1986, and today
the HARDSUIT™ Quantum and HARDSUIT™ 2000 deep sea diving suits represent the
state of the art in atmospheric diving systems.


The advantages of the HARDSUIT ADS over traditional diving include:

The HARDSUIT™ offers significant safety advantages combined with corresponding reductions in acquisition, training and through life cost. When compared to traditional saturation and mixed gas diving the ADS has the following advantages:

  • Historically been proven to be the safest deep diving system available
  • Elimination of pressure related physiological risk
  • Protection from marine life and hazardous environments
  • Similar performance to divers with the instrumentation, data and mobility of an ROV
  • No compression or decompression related time delay or cost
  • Reduced crew size compared to saturation diving
  • Excellent human perception – 3D vision, hearing, feeling
  • Clear communications and ability for pilot to return to the surface as necessary for conferences, work clarification or rigging redeployment and then return to the job site without loss of continuity due to personnel change
  • Ability to work the full water column with unlimited vertical excursions
  • Ability to work on older sub sea equipment or systems that have not been pre-engineered for ROV intervention
  • Reduced cost of pre-engineering on new installations and systems
  • Ability to use standard, readily available tooling, often from rental pools
  • Ability to work in limited visibility (1 m)
  • Adaptable to unforeseen circumstances that arise during a project
  • Ease of transport to and from point of mobilization
  • Rapid installation and set up
  • Modular configuration to suit deck space
  • Small, modular footprint allows deployment from a wide range of surface platforms, including: inflatable boats; fishing vessels; modular, air portable barges; rafts; conventional supply vessels and ships; DSV; and other floating platforms
  • One atmosphere configuration eliminates requirements and costs for hyperbaric evacuation capability
  • Significantly reduced training requirements are an excellent fit to normal frequent military crew rotations


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