The three fender support systems, those of pile and frame, chain suspension and unit support, need to take into account the requirement for a fender system to remain operative even though damage may have been sustained by an exceptional impact. It is preferable to have units which are easily removed before the next berthing takes place. A berth can usually remain in service despite a reduction in the fender provision, provided that the loss of a unit or its supporting structure does not foul the berth. For this reason, whenever possible, fenders should have “keep chains” to enable the damaged fender to be recovered including an additional keep chain where vertical chains are used to support the fender panel.

Frontal Frame of Marine Fender Systems

Chains are to provide support of fender panels or against lateral loading of the fender system. These should be galvanized and the chain system should have an overload failure element which will fail first. Anchor plate fixings should be substantially stronger than the overload failure element within the chain system to avoid damage to the parent structure. This will enable new chains to be used, with confidence, after an exceptional impact has parted the chain system. The framing to any facing material should be designed to enable any repairs to be undertaken easily. For instance, consideration should be given to the type of joins for the backing members. It should be remembered that when a fender panel is in need of repair it is usually because the vessel causing the damage has approached the berth at such an angle as to impact behind the normal berthing line.

Marine Fender System Accessories-Bolts

Marine Fender System Accessories-Chanis

Marine Fender System Accessories-Shackles

Marine Fender System Accessories-U Anchors