When Do Rubber Fenders Need to Be Replaced?

Rubber fenders are rubber products that protect the outside of a ship. They cushion impacts, absorb shock and protect the hull when the ship berths, unberths or comes into contact with other vessels. Over time, however, and as operating conditions change, rubber fenders can become worn, aged or damaged, and then they need to be replaced. Below are some of the most common reasons for replacing rubber fenders.

1. Wear and ageing

After long use and exposure to seawater, sunlight and other environmental factors, rubber fenders wear and age to varying degrees. This reduces their elasticity and weakens their cushioning and shock-absorbing performance, and can even lead to cracking or rupture. When a rubber fender shows obvious wear and ageing, it should be replaced promptly.

2. Cross-section deformation

In service, external forces from ships can cause a rubber fender's cross-section to deform. Such deformation can lead to uneven contact between the fender and the hull, reducing its shock-absorbing and protective performance. A fender whose cross-section has deformed should also be replaced.

3. Damage and rupture

During berthing or contact with other vessels, collisions and impacts can damage or break a rubber fender. A damaged or ruptured fender loses its protective function and can no longer cushion and absorb shock effectively. In this case the fender must be replaced immediately to keep the ship safe and protected.

4. End of service life

Rubber fenders have a limited service life and need to be replaced after a certain number of years. The exact service life depends on the fender material, the manufacturing process and the operating environment. Under normal conditions, a rubber fender typically lasts 5–10 years. Once a fender has exceeded its service life, it should be replaced even if it shows no obvious wear or ageing, to ensure the safety of the ship.

5. Vessel modification and upgrades

Rubber fenders may need to be replaced when a ship is modified or upgraded. For example, if a ship is rebuilt to increase its tonnage and its hull becomes wider, new rubber fenders of a matching width are required. Likewise, if platform modifications or new equipment mean the original fenders no longer suit the ship's new working conditions, they should be replaced.

Summary

The main situations that call for replacing rubber fenders are wear and ageing, cross-section deformation, damage and rupture, end of service life, and vessel modification or upgrades. Replacing rubber fenders in good time keeps ships operating safely and extends their service life.