Hydro - Pneumatic Fender
Hydro-pneumatic Fender is a submarine-specific design that combines water-air buoyancy and a counterweight system to maintain vertical stability, ensuring reliable hull protection in submerged conditions. Engineered for extreme cold, its cold-resistant support balls enable dependable performance in high-latitude ports (Russia, Northern Europe, Canada) and offshore oil platforms facing harsh winter temperatures.
Since September 29, 2025, SunHelm has commenced production of EUDR-compliant Hydro - Pneumatic Fender, becoming the first enterprise in China's industry to support this green initiative.
Hydro pneumatic Fenders require some special installation techniques to be installed. The performance of Hydro pneumatic Fenders is affected by the air:water ratio and the initial pressure.SunHelm would be pleased to receive your design input allowing us to engineer the correct type, size and overall layout of the Hydro pneumatic Fender suiting your requirements.
- Navy use for submarine
- Catamaran
- Semi-submersible platforms
- Drilling rigs
Hydro - Pneumatic Fender Characteristics
- Submerged contact area.
- Adjustable draft.
- Add cold-resistant materials, optimize rubber formula, and improve low-temperature performance.
- The operating temperature range is extended from -35°C to -50°C, enabling stable operation in extremely cold environments.
- Meet customers' needs for use in extremely low temperature environments and provide more reliable product solutions.
- Movable.
- Sub-surface contact face.
- Very low hull pressures.
- Variable draft.
Berthing Cases
SunHelm Marine's 20-year engineering legacy in marine fender systems encompasses cutting-edge pneumatic, foam-core, and fixed rubber technologies, delivering scientifically optimized energy absorption and unmatched berthing safety for vessels of all sizes.
Hydro - pneumatic fender Structure
Inner rubber:
Rely on the fender to ensure the air tightness of the fender to prevent gas leakage and maintain the air pressure of the fender.
Middle layer:
The reinforcement layer is the skeleton layer of the fender, which is made up of multiple layers of glued with high strength cord fabric.
Outer rubber:
The outer rubber layer covers the outer surface of the fender to protect the fender from external force damage and wear.
Fender Body:
Pneumatic rubber fender body.
Counterweight:
Used to balance buoyancy and pull the fender to prevent position shift caused by the impact of waves
Install the fixed cable chain.
Other accessories:
Including charging and discharging water and gas control devices, adjustment devices, etc.
| Diameter(mm) | Length(mm) | Energy absorption(KNm) | Reaction force(KN) |
|---|---|---|---|
| 1000 | 3000 | 52 | 435 |
| 1500 | 3500 | 137 | 761 |
| 1700 | 7000 | 352 | 1725 |
| 2000 | 6000 | 418 | 1740 |
| 2500 | 6500 | 708 | 2356 |
| 3000 | 6500 | 1020 | 2827 |
| 3300 | 6500 | 1235 | 3110 |
| 3500 | 8500 | 2013 | 5072 |
| 3300 | 10600 | 1334 | 3316 |
| 4500 | 9000 | 3179 | 5872 |
YOU GOT QUESTIONS,
WE GET THE ANSWERS YOU NEED
Want to ship quickly?
No problem!
International Leading Hydro- Pneumatic Fender Manufacturer
SunHelm Marine Co., Ltd. is a Chinese manufacturer specializing in maritime products. SunHelm Marine currently has several large-scale modern factories and R&D centers. SunHelm Marine mainly produces pneumatic fenders, marine rubber fenders, foam fenders, hydro-pneumatic fenders, marine airbags, marine salvage airbag, caisson moving airbags and other products.
Based on ship industry chain, SunHelm Marine has expanded its market layout, main business involves ship mooring and berthing, marine engineering, port construction and other fields. SunHelm provides customers with systematic, comprehensive and creative services.
After nearly 20 years of development, product and technology applications have covered more than 80 countries and regions in 7 continents, SunHelm Marine became the well-known brand in the world.
