The Specification of the fenders is defined with the help of our Technical Department according to the size of the considered Vessel (Displacement, length, width, Draft) and the berthing conditions.

The design is based on a method which best compromises all the given parameters: Dimensions of the fender, required Standoff distance, Density of foam core, all in view to calculate the best suitable dissipation of energy coupled with reaction force, within the Boat hull's capacity.

I - Materials

Ocean 3 Fenders are made from the highest quality materials, able to meet the most stringent of requirements:

A thick coating of PU is sprayed onto the PE foam core, thereby improving its performance and to give the fender increased resistance against abrasion during operations on Quay Walls, piers, jetties and/or aggressive surfaces.

Ocean 3 s' "Mobile" Fenders are made to order, manufactured to the nearest centimeter both in diameter and length, precisely made to measure to neither exceed nor underestimate its ability to perform.

100 % closed cell polyethylene (PE) foam ensuring a high amount of buoyancy, even in case of damage to the outer coating. A wide range of densities are available, from 18Kg / m³ to 200 kg / m³, to offer a high dissipation of Energy and a low Reaction Force.
Composite encapsulation with Polyurethane matrix (PU), polyester polyurea type, for hydrolysis and marine condition resistance, reinforced by fibers, thread layers, synthetic fabrics or even metal. The thickness of coating is applied from 5 mm to 50 mm, sometimes beyond for specific applications.

II - Fender characteristics

Ocean 3 Fenders are manufactured from Ø 100 mm to Ø 4000 mm, with length varying between 1,2 x Ø to 3 x Ø according to the construction rules.
The below table shows dimensions the most common dimensions without being exhaustive. Tailor made fenders are manufactured to the nearest cm in diameter and length to meet your exact needs.

The two main characteristics which will determine and specify your Fenders are :

Energy absorption: Fenders' capability to dissipate energy generated during the berthing.
Reaction Force: Strength/Push generated by the compression of the fender during the approach, taken by both the dock and the ships' hull.

Energy Absorption

The below graph expresses the energy dissipated by the Fender in different stages of compression. The Energy can be calculated up to 60% compression; however, occasional higher compression is possible provided they only last for a few moments, ie. the time of an accident.
At and above 75% compression, the Fender will struggle to return to its original diameter but will continue to perform its protective role none the less. There is a necessity to be weary of sharp metal objects in those situations.

Reaction Force

The "Reaction Force" curve reflects the forces generated on the Quay wall and Boat Hulls' during the Fender compression.