II - TYPOLOGY

• 2. Bonding using Adhesives (Sikaflex type). Typical for D-Shaped, Squaree or Rectangular Fender sections which have a flat back and follow a flat section along the Boat Hull. A through wire cable can also be added to ensure fixation in case ofglue failure.

   

 

• 3. Bolted mechanism : this can be proposed in cases where a recess cannot be made in the Hull to take a cylindrical shaped Fender and/or if gluing is not permissible. In that particular case, Fenders have a steel plate inserted into the Fender in order to either bolt through the inside or the outside of the Boat Hull. Also a Fender can be bolted vertically in certain cases and if we have allowed for this.
  
  

    

Depending on the admissible total pressure which can be taken by the hull, the foam densities vary from 18 to 200 Kg/m³ (And beyond if required), in order to calculate required amount of Energy against a certain given volume of foam. Foam densities can be increased or even "hardened" in specific stressed areas of the Boat, or even a single Fender can also be composed of several densities of foam according  to condition of use (Bow Fender for Boats used as Tug for instance). By playing around with the varying foam densities, it allows our fenders to dissipate higher Energt whilst keeping the same dimension of Fenders.

The coating thickness ranges from 5 to 40 mm (Even more if required) according to the use or targeted lifespan, and includes reinforcements with textiles, fabrics or fibers (metallic or synthetic).

Foam filled Fendering will provide many advantages compared to traditional systems, such as inflatables tubes or compared to Rubber D profiles :

• No risks of puncture and total failure
• Lower weight and higher Energy absorption
• Fenders go on working even if punctured or damaged
• No Maintenance required through pressure checking or variations of pressure due to changing ambient temperatures.
• Coating reinforced with no propagation of tears, even if damaged.
• More proportional to Kinetic Energy absorption.
• Bringing no damage even if used beyond admissible compression.
• No shocks transmitted to the Hull