FOAM-FILLED fenders
Foam-filled fenders (Figure 3.79) require little to no maintenance,
in comparison to air-filled fenders. Those have a
chance of deflation, and according to its manufacturer a
yearly inspection of the valves is recommended.
Pneumat ic fenders (See Figure 3.80)
• Cheaper than foam-filled fenders
• More environmentally friendly than foam-based
fenders
• More compact to transport
Option 2
The second option is to use pipes as used in the dredging
industry. The pipes consist of a rigid pipe piece made
from HDPE connected with flexible rubber hoses (Figure
3.81) to ensure the flexibility of the pipe to follow the
waves. To ensure floatation of the pipe, special floatation
buoys are placed around the pipe.
Pros
• Proven technology, used in offshore dredging
operations
• Little to no maintenance required
Cons
• Expensive
• Non flexible pipe used, suitability for flexible booms
should be investigated