Air, Mixed Gas & Nitrox Diving, Atmospheric Diving Systems, Autonomous Underwater Vehicle, Diving Technology & Tool Design, Nondestructive Testing, Operations Planning, Remotely Operated Vehicles, Towable Diving Systems, Towed Underwater Systems, Underwater IRM, Underwater Welding | Phoenix International Holdings, Inc.
HARDSUIT™ Atmospheric Diving System (ADS)

Atmospheric Diving System

Phoenix International owns and operates the HARDSUIT™ Atmospheric Diving System (ADS)—a cutting-edge, manned solution for complex subsea tasks where precision, safety, and access are critical. Rated for dives up to 1,200 feet of seawater (fsw), the HARDSUIT™ is a one-man, one-atmosphere suit that has proven to be a valuable tool within the commercial diving industry.

HARDSUIT™ ADS | Advantages to the Client

Safer Operations
• Operator remains at surface pressure, eliminating decompression requirements
• Reduces diver exposure to deepwater hazards

Faster Project Execution
• Typical 4–6 hour working dives
• Rapid mobilization and minimal setup
• Less deck space and smaller crews required

Greater Access & Precision
• Maneuvers in any position and accesses confined spaces
• Neutrally buoyant for precise work
• Compatible with conventional diver tooling

Reduced Project Costs
• Avoids the complexity of saturation diving
• Fewer personnel and reduced vessel requirements
• Shorter project durations and streamlined operations

Safety-Driven Design

Safety is the foundation of the HARDSUIT™ Atmospheric Diving System. From its physical construction to its operational protocols, every aspect of the system is designed with redundancy, oversight, and protection in mind to safeguard the diver and ensure mission success.

  • Each HARDSUIT™ is equipped with redundant life support systems and real-time monitoring capabilities.

  • A Topside Atmospheric Monitoring System continuously tracks suit performance, life support, and diver status, providing live oversight throughout every dive.

  • All operators and support personnel are trained to internationally recognized safety and operational standards, ensuring professional, repeatable, and safe execution in every mission.

From concept to deployment, the HARDSUIT™ exemplifies Phoenix’s uncompromising commitment to safety, performance, and operational reliability in manned deepwater operations.

Commercial Applications

The compact size, joint flexibility, and hand pod dexterity of the HARDSUIT™ give the system practical work capabilities for Phoenix clients worldwide including:

Inspections
  • Fixed & Floating Structures
  • Pipelines & Risers
  • Structural Cleaning
  • Close Visual Inspection
Maintenance
  • Anode Retrofits
  • Bell Guide Installations
Repairs
  • Fixed & Floating Structures
  • Pipelines & Risers
  • Subsea Well Intervention
  • Clamp Installation
Salvage
  • Debris Removal
  • Jetting
  • Cutting
  • Object Recovery
Construction
  • Tree Installation and Intervention
  • Riser Installation
  • Pipeline Tie-ins
  • Field Development
Non-Destructive Testing
  • Thickness – UT
  • Corrosion – CP
  • Visual
  • MPI
  • INCOTEST
Dam Inspection & Repair
  • Intake Screens
  • Structures
  • Tail Race
  • Bridge Piers
  • Thrust Piers
  • Gate
Outfall Work
  • Condition Assessment of Outfall
  • Manhole Covers
  • Monel Hardware
  • Condition Assessment of Ballast
Outfall Work cont’d
  • Outfall Structure and Pipe Joints
  • Diffuser Ports
  • Concrete Core Plug
  • End Flap Gate
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