Saturation Diving System
Unique Group has a long track record in the manufacture of classed saturation diving systems. We provide custom DSV saturation, portable and HRF saturation systems, while we also supply diving bells and PVHO chambers life support equipment and other key ancillary equipment.
Designed and manufactured in accordance with applicable IMCA guidelines and Classification Society rules.
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Key Solutions
Our key solutions include:
Saturation Diving Systems (Surface, Portable, DSV)
5 m3 & 6 m3 DIVING BELLS
Saturation Dive Chambers
Self-Propelled Hyperbaric Lifeboat (SPHL)
LIFE SUPPORT MACHINERY
Services
Unique Group provides comprehensive life-cycle support for saturation diving systems, from commissioning and planned maintenance to refurbishment, upgrades and technical support. Our global engineering and service teams help clients maintain system availability, regulatory compliance and operational readiness throughout the service life of their equipment.
Planned Maintenance & Refurbishment
Scheduled maintenance, inspection and refurbishment programmes to maintain system integrity, certification and operational readiness.
Critical Spare Parts & OBSOLESCENCE SUPPORT
Rapid supply of critical spares, replacement components and obsolescence solutions to minimize downtime and maintain system availability.
ON-BOARD & REMOTE TECHNICAL SUPPORT
Experienced technical support on board the vessel or remotely, backed by our global engineering and service team.
System Upgrades & Tropicalization
Engineering upgrades, modifications and topicalization packages to adapt systems for changing operational, environmental and client requirements.
COMPLIANCE & REGULATORY UPGRADES
Engineering assessments and system upgrades to support compliance with current IMCA guidance, IOGP 411 requirements and applicable Classification Society rules.
Local Services & Rental Support
Regional service support, specialist personnel and rental equipment coordinated through Unique Group’s global network.
Engineered Saturation Diving Systems for Demanding Offshore Operations
Unique Group designs and manufactures complete saturation diving systems for offshore diving operations, from modular systems to fully integrated Dive Support Vessel installations.
Each system is engineered to suit the required diver capacity, operational depth, vessel arrangement and project-specific requirements, while incorporating established industry practice and applicable Classification Society requirements.
9
Man System
12
Man System
15
Man System
24
Man System
HRF Systems
Unique Group designs and manufactures Hyperbaric Reception Facility (HRF) systems for the safe reception, transfer and continued decompression of divers evacuated from a saturation diving system.
HRF systems are available in 12, 18 and 24 diver configurations and can be supplied as modular, transportable chamber complexes complete with structural support frames, saturation control systems and machinery modules.
12-Man HRF System
10-Bed, 12-Man Chamber Complex
A self-contained 10-bed, 12-diver HRF chamber complex installed within an engineered support frame and supported by a dedicated saturation control and machinery module.
The structural frame protects the chamber system during transportation and provides the interface for installation onto a suitable SPHL support structure or foundation.
- Twin-lock chamber complex rated to 300 msw
- Designed in accordance with ASME Section VIII Division 1 and applicable ABS requirements
- Accommodation for 10 beds / 12 persons
- Integrated chamber support frame designed for lifting and transport
- Dedicated HRF saturation control and machinery module
- Thermally insulated 20 ft machinery container
24-Man Triple-Lock HRF System
Dual 24-Man HRF (12 and 12)
A triple-lock chamber complex configured to provide simultaneous hyperbaric reception capability for two separate 12-diver groups.
The system is installed within an engineered support frame and supported by a dedicated HRF saturation control and machinery module.
- Allows an HRC and SPHL to be docked concurrently
- Supports two independent 12-diver groups simultaneously
- Provides operational flexibility during multi-system emergency evacuation scenarios
- Triple-lock arrangement enables controlled transfer and separation of diver groups
- Complete chamber, control and machinery package designed as an integrated HRF system
Our Systems
A modular family of saturation dive systems, from fixed-orientation entry systems to fully enclosed DSV installations.
9-Man SAT System (ABS/IMCA)
HS Series
A compact fixed-orientation saturation system developed for smaller Dive Support Vessels and projects requiring a lower-complexity installation.
The diving bell is launched through a dedicated moonpool using an A-frame, while the Hyperbaric Rescue Chamber is deployed directly over the vessel side.
Key features
- Compact fixed-orientation arrangement
- 9-diver saturation capacity
- Moonpool bell launch
- Over-side HRC deployment
- Suitable for smaller DSV installations
300 HDS 15 / HDS 18 Single Bell DSV
HDS Series
Fully integrated saturation diving systems developed for permanent installation on dedicated Dive Support Vessels.
The HDS 15 configuration provides single-bell deployment through a moonpool using a gantry system, while the HDS 18 configuration provides twin-bell deployment through independent moonpools. Both configurations incorporate twin-lock chamber arrangements and integrated vessel interfaces.
Key features
- Permanent DSV integration
- HDS 15 single-bell configuration
- HDS 18 twin-bell configuration
- Independent moonpool deployment
- Integrated chamber, control and machinery systems
9-Man & 12-Man SAT Systems
HF Series
A modular saturation system designed for maximum installation flexibility, future expansion and vessel adaptability.
The system architecture allows the Hyperbaric Rescue Chamber to be upgraded to an SPHL configuration where required. Machinery modules are arranged within transportable ISO containers, while the launch and recovery arrangement can be adapted to suit the selected vessel configuration.
Key features
- 9- and 12-diver configurations
- Modular and upgradeable architecture
- Flexible vessel integration
- Provision for HRC-to-SPHL upgrade
- Containerised machinery modules
- Multiple launch and recovery configurations
More Images
Inside the control panels, chambers, and machinery rooms that make up a saturation diving system.
Ongoing Support for COOEC's DSV HYSY285
CODEC
Sustained Sat-Diving Operations in Qatar
Unique Group’s support has allowed DSV HYSY285 to perform consistent saturation diving operations since arriving in Qatar in Q4 2026.
12
Months of Support
3
Unique Offices Involved
Over the past 12 months, Unique Group has supported DSV HYSY285’s saturation diving operations in Qatar. The local knowledge of Unique Group’s Qatari entity, combined with the equipment and industry expertise of the UAE and South African offices, was key to keeping operations running.
The scope of support included:
- Arrangement of local services and equipment rental
- Critical spare parts supply
- On board and remote support
- Equipment upgrades for tropicalization of the system
- Equipment upgrades to meet the most recent IOGP 411 and IMCA requirements
Built to Class, Manufactured Worldwide
World Leaders in Design & Manufacturing
Unique Group are world leaders in design and manufacturing of diving and life support systems.
IMCA Compliant & Classed
We offer a wide range of IMCA compliant and classed diving equipment and systems — Lloyds Register, ABS, and DNV.
Global Manufacturing Footprint
Manufacturing units in South Africa, UAE, and India.
Trusted By
DCN
HSL
CODEC
POSH
BOSKALIS
HARKAND
PETROLOG
SUBTECH DIVING
AQUEOS
RANGER OFFSHORE
SOCAR
Hear From Our Clients
Our solutions are built in close collaboration with the people who use them. From concept to offshore deployment, we work alongside our clients to solve real operational challenges and deliver measurable impact.
Indian Navy
The successful delivery and integration of the saturation diving systems is an important milestone in the development of these advanced Diving Support Vessels for the Indian Navy. Unique Group’s expertise was an important contribution to the project, enabling the vessels to be equipped with a sophisticated, class-approved diving capability for demanding deep-sea and submarine rescue operations.
Talk to Us About
Saturation Diving Equipment
Request a Quote
Bring us your toughest saturation diving requirement and we will engineer, manufacture and support the solution, in-house, end to end.