Generally, according to the structure, the rubber fender can be divided into two categories: floating rubber fender and solid rubber fender. Solid rubber fender (non floating type) has a longer application history and a wider range of applications as the dock ship anti collision equipment. According to the stress situation of rubber fender,it can be divided into shear type, rotary type and compression type; according to the structure of the fender, solid rubber fender can be divided into D type, cone type, drum type, fan-shaped type, rectangular type and cylindrical fender type. Solid rubber fender has high energy absorption and reaction force, and it has the advantages of low cost, long service life and simple installation and maintenance. It is a protective device for docks and  dockyards. Floating rubber fender can float freely on the surface of the water. According to the different internal buffer medium.......http://www.dpnrubber.com/products/floating-type-rubber-fender.html