In dock construction, there are a variety of factors that must be considered when designing a marine fender system. Maritime International's product line includes 5 main types of marine fenders for use in dock facilities: Cell, Cone, Leg, Arch, and Cylindrical. In this series of blog posts, we'll profile each fender type, and review potential design issues of each.
The latest generation of marine fenders is the MCN Cone Fender. The design evolved from the highly popular Cell Fender. Its tapered shape gives them the un-paralleled ability to deflect 70% of its height, maximizing its energy performance for its rated reaction. The MCN Cone Fender‘s locking style deflection shape (Revolved S), allows the fender to handle high shear loads, reducing the need for shear and weight chains. Cone fenders have good durability qualities which Maritime International confirmed by conducting a 40,000 compression cycle in our marine fender test laboratory.
In comparison to a cell fender the cone fender does have a slight trade off in durability for its gained efficiency, but in most cases the durability of the cone fender is far in excess of what is necessary for today's docking systems. In further comparison the design of a panel for a cone system and a cell fender system will have a few distinct differences. Most noticeable is the panel stool design which is adapted to stick away from the back of the panel such that it can "plunge" into the fender during the deep 70% deflection cycle of the fender. The face of a cone fender has a slightly smaller footprint than the cell fender causing for higher panel stresses which must be considered when designing a panel system properly for cone fenders. Finally the cone fender system will typically utilize a smaller rubber body with a slightly larger steel body than the cell fender, understanding the cost impact of these variable is essential in making the proper selection between cone and cell fenders.
For more information about the MCN Cone fender, or for design assistance, contact a Maritime International representative today.