Seaflex Air Lift Bags (ALB) – Underwater Lifting & Buoyancy
Unique Group’s Seaflex® Air Lift Bags (ALB) are heavy-duty underwater lifting and buoyancy solutions designed for subsea lifting, load support, salvage and offshore operations. Available in capacities from 250 kg to 50 tonnes, these parachute-style lift bags provide reliable buoyancy for a wide range of underwater applications.
Speak with our buoyancy and ballast specialists to discuss your project requirements.
Available for Rental and Sale Worldwide
Unique Group’s Seaflex® Air Lift Bags (ALB) are heavy-duty underwater lifting and buoyancy solutions designed for subsea lifting, load support, salvage and offshore operations. Available in capacities from 250 kg to 50 tonnes, these parachute-style lift bags provide reliable buoyancy for a wide range of underwater applications.
Speak with our buoyancy and ballast specialists to discuss your project requirements.
Features
Lifting capacities from 250 kg to 50 tonnes
Stable single-point lifting attachment for underwater load support
Automatic excess-air venting during dynamic ascent
Seaflex DeeTangler™ system for easier subsea strop management
High-strength fabric canopy with RF-welded seams
Tested inversion system with base-operated high-flow dump valve
Compact, diver-friendly design for easier handling and deployment
Specifications
Lifting Capacity: 250 kg to 50,000 kg
Available Models: 250 kg, 500 kg, 1t, 2t, 3t, 5t, 10t, 15t, 20t, 25t, 35t and 50t
Construction: High-tensile Trevira polyester fabric with protective coating
Safety Factors: 7:1 strop design WLL factor; minimum 5:1 assembly test factor
Inflation Connection: ¾-inch BSP with 316 stainless steel Camlock fitting (2t models and above)
Refer to datasheet for detailed technical specifications.
Applications
Underwater lifting and load support
Marine salvage and vessel recovery
Subsea pipeline and template positioning
Offshore construction and installation
Buoyancy support for submerged structures
Underwater equipment recovery
Commercial diving and subsea maintenance
Industries Served
Seaflex Air Lift Bags support underwater lifting, buoyancy and recovery operations across a range of marine and subsea industries.
- Offshore Oil & Gas: Subsea infrastructure installation, maintenance and recovery.
- Marine Construction: Underwater lifting, positioning and support of submerged structures.
- Marine Salvage: Vessel recovery, wreck removal and lifting of submerged equipment.
- Commercial Diving: Diver-assisted lifting and buoyancy operations.
- Ports & Harbours: Underwater maintenance, infrastructure repair and equipment recovery.
- Offshore Renewables: Subsea lifting and support activities associated with offshore infrastructure.
Why Choose Unique Group
Unique Group’s Seaflex Air Lift Bags are designed and manufactured in the UK, combining proven lifting technology with extensive experience in subsea buoyancy applications.
- Proven Engineering: Designed in accordance with IMCA D-016 guidance, with documented structural and inversion testing.
- In-House Manufacturing: High-strength fabric construction, precision-cut panels and RF-welded seams produced under controlled manufacturing processes.
- Operational Safety: Tested load-bearing assemblies, stable single-point lifting and diver-friendly rigging systems.
- Customised Solutions: Standard and purpose-designed lift bag configurations to suit specific project requirements.
- Technical Support: Experienced buoyancy and ballast specialists providing product selection, operational guidance and support.
Each Seaflex Air Lift Bag is supplied with product-specific documentation, including relevant certification, service records and operating instructions.
Rental or Purchase Options
Seaflex Air Lift Bags are available for both rental and purchase, offering flexible solutions for short-term lifting operations, ongoing offshore projects and long-term equipment ownership.
Rental
- Suitable for temporary subsea lifting, buoyancy and marine salvage projects.
- Access to inspected and tested equipment for specific project requirements.
- Technical guidance to help select the appropriate lifting capacity and configuration.
Purchase
- Standard Seaflex Air Lift Bags available in capacities from 250 kg to 50 tonnes.
- Custom-engineered configurations available for specialised subsea lifting applications.
- Supplied with relevant documentation, certification and operating instructions.
Speak with our buoyancy and ballast specialists to discuss availability, project requirements and the most suitable rental or purchase option.
Worldwide Delivery & Regional Network
Unique Group supplies Seaflex Air Lift Bags to customers worldwide through its international network of offices and partners.
Designed and manufactured in the UK, Seaflex products support offshore, marine construction and subsea operations across the Middle East, Europe, Asia Pacific, Africa and the Americas.
Our regional teams provide assistance with equipment selection, rental and purchase enquiries, project requirements and delivery coordination.
For international availability, technical support and project-specific requirements, speak with our buoyancy and ballast specialists.
