Cylindrical Hydro Pneumatic Fenders Sling Type Low Reaction No Leakage

Our hydro pneumatic fenders provide advanced underwater protection for submarines and naval vessels through innovative engineering. These specialized marine solutions utilize a precisely balanced combination of air and water (30%-70% adjustable ratio) with integrated counterweight systems to maintain optimal vertical positioning during all berthing operations. The pneumatic fenders’ unique design ensures continuous hull protection while accommodating various pressure settings to meet different operational requirements.

Engineered for superior performance, these hydropneumatic fenders offer exceptional energy absorption and adapt seamlessly to diverse hull contours. Their cost-effective design provides a reliable alternative to traditional solutions, featuring rapid deployment capabilities and minimal maintenance needs even in harsh marine environments. Each system is custom-designed through professional engineering analysis to match specific vessel requirements and berthing conditions.

Trusted by navies worldwide, our hydropneumatic fenders deliver unmatched protection through tailored solutions that combine technical precision with operational reliability.

Doowin Marine is a professional manufacturer of ship launching airbags, pneumatic rubber fenders, foam-filled fenders, inflatable pipe plugs, and offshore foam buoys.

Doowin Marine is the leading manufacturer of ISO 14409:2011 or CB/T 3795 rubber airbags/marine inflatable airbags. Marine rubber airbags, known as ship launching airbags or ship launching balloons, can be used for ship launching and landing, heavy lifting, and marine salvage.

Our floating fenders include pneumatic rubber fenders and foam-filled fenders. Our Yokohama-type pneumatic rubber fenders are produced and inspected in compliance with ISO 17357. Our inflatable pipe plugs are widely applicable to all kinds of municipal pipesfor blocking as stoppers. We also produce various offshore foam buoys used for surface-to-sub-sea operations at depths of up to 7000m. 

Our engineers and consultants have been in fabrication and use these products for more than 30 years. Doowin Marine has clients in the ship building, marine rescue and salvage,  energy and oil, offshore shipping, and other industries all over the world. Doowin Marine products passed a rigorous ISO 9001:2008 Quality Management System, approved by the third-party SGS, BV, CCS, ABS, LR, BV.