Offshore Construction



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Reliable and extensive buoyancy solutions for offshore construction

As one of the world’s prominent integrated subsea and offshore solution providers, Unique Group understands the requirements and challenges in subsea lifting operations and offshore construction.

Due to the types of conditions and environments encountered in offshore construction, it is crucial that your buoyancy products and solutions are of best quality. Unique Group’s Seaflex product line has been a trusted product and service provider worldwide since 1987.

From the smallest single purpose tasks to huge subsea salvage operations, we have created an extensive range of offshore construction buoyancy products such as: Seaflex Air Lift Bags, Draught Reduction Buoyancy, Enclosed Floor Test Bag, FESA Bags (Fully Enclosed Single Attachment Bags), Mono Buoyancy Units, Open Top Floor Test Bag, Water-filled Bags as Counterweights and buoyancy bags for jacket installation. We also partnered with trusted brands such as Britlift Spreader Beams and YaleGrip: Synthetic Pulling & Stopping Grips to provide a complete solution required for your offshore operations.

Why Choose Unique Group?

Fully and Universally Compliant

We deliver your Seaflex buoyancy bags in an enclosed crate and ready for immediate use with universally compliant documentation. Seaflex bags are fully compliant with IMCA D-016 and with ABS PDA.

Durable & Guaranteed High-Quality

Our offshore construction buoyancy bags are made from high-performance structural fabric canopy that are subjected to rigorous testing to ensure full compliance.


Seaflex buoyancy products are immensely versatile. The single point attachment is ideal for lightening underwater static structures such as pipes and templates, or for salvaging vessels from the seabed to the surface. They are robust and highly resistant to damage even in the harshest environments.

Extremely Safe

Unique Group’s Seaflex product line has been designed to provide the maximum amount of lift for the least overall height. The design brings with it a wide hem, which aids swifter emptying of the bag on emergency inversion – a notable safety benefit. All our buoyancy bags automatically vent excess air as they ascend dynamically with their load. Their single attachment point helps keep them inherently stable, regardless of load orientation or trim.


Our buoyancy bags are also more efficiently rigged than others, saving shipping weights without compromising on materials, strength, capability or safety. We understand that time is money, especially during diving operations. Seaflex Air Flotation Bags address the reality of subsea work: poor visibility, currents and surge, fatigued operators.

Discover other buoyancy bags products

Get in touch with us today to discuss our range of buoyancy products. Our range is extensive so you’re sure to find a solution that can cater for your entire subsea salvage operations. In the event that you require a more tailored solution, we can also provide more bespoke buoyancy products.