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What Are D Fenders and Why Use Them?
D fenders get their name from their “D”-shaped cross-section. They are one of the most common types of rubber fenders used in ports, docks, and on ships. These fenders protect boats, structures, and equipment from impact damage. At NANHAI, we provide durable, high-performance D fenders made from top-quality rubber materials.
Key Benefits of D Fenders
1. High Energy Absorption with Low Reaction Force
D fender absorbs strong impacts and reduces the force that returns to the ship or dock. This helps prevent serious damage during docking or loading.
2. Weather Resistance and Long Life
We use EPDM rubber, which resists UV rays, ozone, and seawater. This material lasts 10 to 20 years, even in tough marine conditions.
3. Easy Installation and Low Maintenance
D fenders have a flat back that bolts easily to flat surfaces. You can install them horizontally, vertically, or at an angle. They require very little maintenance—just clean them and check for damage from time to time.
4. Custom Sizes and Flexible Design
NANHAI offers custom lengths, thicknesses, and internal hole designs (like DD and DO types). Whether you need standard or heavy-duty protection, we can supply the right solution.

Common Applications for D Fenders
- Ship Side Protection: Protect ship hulls during docking or when floating near piers and mooring areas.
- Dock and Pier Safety: D fenders reduce the damage when ships or equipment bump into hard surfaces.
- Loading Zones: Prevent impact from trucks or forklifts in warehouses or terminals.
- Repair Yards and Shipyards: Reduce vibration and noise during ship repairs or construction.
D Fenders vs. Other Types
Fender Type | Energy Absorption | Reaction Force | Installation | Best Use Case |
---|---|---|---|---|
D | ★★★★☆ | ★★★★☆ | ★★★★★ | Boats, docks, terminals |
DD/DO | ★★★★★ | ★★★★☆ | ★★★★☆ | Heavy ship docking |
Cylindrical | ★★☆☆☆ | ★★★★★ | ★★★★★ | Light impact areas |
Arch | ★★★☆☆ | ★★★★☆ | ★★★★☆ | Medium force areas |
Pneumatic | ★★★★★ | ★★★★☆ | ★★☆☆☆ | Ship-to-ship, oil rigs |
D fenders are a smart choice for many projects because they offer strong performance at a reasonable cost.
How to Choose the Right D Fender
- Measure the Energy Needs
Choose a model that can absorb enough impact based on your ship size or dock type. - Select the Right Rubber Material
EPDM is best for long-lasting, weather-resistant performance. - Use Proper Installation Tools
Install fenders using bolts, backing plates, and spacers. Make sure to follow proper spacing and alignment. - Check Regularly
Clean the fenders, check for cracks or deformities, and replace them if needed.
Why Choose NANHAI’s D Fenders?
- Reliable Protection: High energy absorption and low reaction force.
- Long-Lasting Materials: Made with EPDM for maximum life.
- Fast and Easy to Install: Simple structure saves time and labor.
- Flexible Applications: Use them in ports, terminals, shipyards, and warehouses.
Conclusion: Let NANHAI Protect Your Project
D fenders are smart, strong, and affordable. They protect your ships and structures from damage, and they last for years with minimal care. NANHAI is your trusted supplier of marine rubber fenders. We offer custom solutions, fast delivery, and expert support.
Contact NANHAI today for a quote or technical advice. We’re ready to help you protect your people and property.