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Buoyancy & Ballast

Buoyancy & Ballast

Buoyancy & Ballast’s SEAFLEX brand has been helping contractors work more safely, efficiently and profitably since 1987.

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Water Weights is now part of Unique Group.

The combined capabilities strengthen Unique Group’s well-established Buoyancy & Ballast division, reinforcing the Company’s vision to provide integrated solutions to customers worldwide.
Contact Us for more information.

Safe, Profitable Outcomes with Unique Buoyancy & Ballast

We specialise in the design, manufacture, supply and support of two main product lines: inflatable buoyancy products for diving, salvage and installation operations, and waterbags for the load testing of cranes, davits, lifeboats, gangways and other load-bearing structures.

All Seaflex and Water Weights products are available for hire or purchase from over 25 worldwide locations, including most of the major Oil and Gas markets. They all come with the highest levels of testing and certification in the industry - as well as the highest levels of compliance with internationally recognised IMCA and LEEA guidelines, where applicable.

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Download or view our Unique Buoyancy & Ballast brochure for a quick overview of our services.

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Seaflex Buoyancy

Seaflex manufactures inflatable buoyancy products which harness the physical properties of air. For the purchase or the rental of diving bags, salvage bags, flotation bags, pipeline buoyancy modules and cable laying  flotation we are the go-to guys - wherever in the world you may be.

Dynamic lifting from seabed to surface requires Seaflex Air Lift Bags (ALBs). They’re designed for the recovery of underwater objects (such as sunken vessels or damaged pipelines). They’re also often used as static buoyancy bags in underwater engineering because they’re easy to handle underwater and connect to the load via a single attachment point. Often referred to as parachute airbags, their open base allows expanding air to vent freely during an ascent to the surface, so ensuring no over-pressurisation can occur.

General support of assets at or near the surface, or the controlled laying of pipelines and cables from the surface to the seabed, requires Seaflex enclosed buoyancy bags and systems. Our Inflatable Buoyancy Units (IBUs), Mono Buoyancy Units (MBUs) and Dual Boom (DBs) are individual inflatable buoyancy bags designed for such applications; our patented SeaSerpent and Kraken systems offer continuous buoyancy support where this is a better operational option than multiple single units.

Buoyancy & Ballast

Water Weights for Load Testing

The original water-filled load testing and load monitoring specialists.

We pioneered the use of water-filled bags as a safe, flexible, cost-effective alternative to solid weights, back in 1979. We continue to lead the field, with a range of products for hire and sale worldwide, together with a comprehensive, expert service.

Buoyancy & Ballast