How to Choose the Right Rubber D Fender for Your Vessel
6th February, 2025
Among the different types of fenders, rubber D fenders are one of the most popular because of their durability, versatility, and shock-absorbing characteristics.
But how do you select the right rubber D fender for your vessel? In this practical guide, we’ll help boat owners and operators make an informed decision based on vessel size, type, and operational needs.
The purpose of rubber D fenders
Before going into the details of how to choose a rubber D fender it is relevant to point out their purpose. Rubber D fenders protect the hull of the boat or ship during its impact with the docks, a pier, or another vessel.
They absorb impact and prevent damage to the vessel and structure alike. Their D shape provides good cushioning and resistance to impact, hence very suitable for both small and large commercial vessels.
How to choose the right rubber D fender for your vessel
Now, we’ll discuss all the things you must consider when choosing a rubber D fender:
The size and type of vessel
The size of your vessel is the first determining factor in choosing rubber D fenders. This is because different sizes of boats call for different dimensions of fenders to provide complete protection:
• Small to medium vessels: For smaller boats and yachts, a rubber D fender with a diameter ranging from 80mm to 200mm is typically sufficient. Smaller fenders are easier to install and provide excellent shock absorption for lighter, more compact vessels.
• Large vessels: Large vessels, like cruise ships, ferries, or commercial vessels, call for a much larger diameter of rubber D fenders, ranging from 200mm to 300mm. These fenders will be able to withstand a greater impact force and thus provide longer service life under heavy-duty operation service.
This could either be the vessel’s hull profile or the characteristics of the dock. For example, a vessel with a flat or angular hull may require fenders that have a larger contact area in order to distribute the impact force applied evenly.
The type of operation
The type of operation your vessel will be involved in considerably influences the selection of a rubber D fender for use:
• Offshore or highspeed: Vessels used either in higher speeds or ones exposed to rougher conditions require choosing a more durable rubber D fender, highly resistant to wear and tear. The ability of these fenders to resist high-velocity impact or environmental elements such as UV rays and saltwater exposure is an important factor.
• Luxury yachts and pleasure craft: For yachts and other pleasure craft, aesthetic appeal can also be a consideration for the fender. While functionality remains paramount, you might seek a rubber D fender that is complementary to the design of your vessel.
Looking for durable rubber D fenders?
At Aquaseal, we produce each rubber D fender through a die, and in addition to our range of standard sizes, we can design bespoke fender profiles for your own special requirements. Contact us for more information.
