A Technical Guide to Dtype Rubber Fenders for Port Safety

D-type rubber fenders are a common protective system at small and medium berths, using a D-shaped cross-section to absorb berthing impact and shield wharf structures. Standard TDF and TDC lines emphasize simple installation and heavy-duty rubber construction, while a wing variant adds larger anchoring grips and double-line anchors for greater stability. The distinction matters at sites with frequent berthing or high lateral loads.

D-type rubber fenders are made from high-strength rubber and shaped to spread the force of a berthing vessel across the fender body, reducing stress on the dock. The profile is intended to protect the main structure of a wharf during contact.

They are typically used at small terminals, ferry berths, quay walls, and other berthing facilities where straightforward installation and durability are priorities. The design is intended to handle repeated contact while preserving the integrity of the wharf structure.

The ESC-TDF and ESC-TDC series are heavy-duty rubber products in this category. Their design emphasizes ease of installation across varied berth environments and resistance to fatigue under frequent berthing operations.

An improved variant, often called a wing fender, was developed for installations that require greater stability. It retains the D-type profile but changes the anchoring geometry.

• Larger anchoring grip: The anchoring section is substantially larger, creating a stronger attachment base.
• Double-line anchoring: The design supports a double-line anchor system, which improves resistance to displacement under severe berthing impact.
• Targeted use: Wing fenders are intended for berthing areas where firm installation and high stability are essential.

The wing design is positioned for locations with frequent berthing or greater lateral loads, where standard D-type fenders may not provide sufficient hold.

Fender selection typically depends on berth size, vessel type, berthing frequency, and the required anchoring strength. Because product specifications can be revised as technical or production changes occur, current parameter tables are subject to confirmation during the design phase.