A ship buoy fender, also known as a ship fender, is an elastic buffer used on the edge of a dock or ship. It has wooden fender, steel fender and rubber fender. It is mainly used to reduce the impact of ships and wharfs or ships during docking or mooring, and to prevent or eliminate damage to ships or wharfs. Wooden fender has simple structure, low cost and little friction with the hull. Mainly used for small and medium-sized terminals in areas with sufficient timber sources; Steel fender structure is simple, easy to manufacture, high strength, suitable for small docks; Rubber fender has less reaction in ship collision and long service life. Easy to install. They are suitable for all types of docks.

Usually rubber fender according to the structure can be divided into two categories: solid rubber fender (non-floating) and floating rubber fender. Floating rubber fender can float freely on the water surface, according to its internal buffer medium can be divided into: inflatable rubber fender, filled rubber fender. The inflatable rubber fender uses compressed air as the medium and consumes the collision energy by working with compressed air. Rubber fender bumpers are mainly closed cell foam materials, such as foam EVA, foam polyurethane and foam rubber. Floating rubber fender is a new type of fender equipment. Compared with solid rubber fender, its main features are: large compression deformation, large energy consumption, small reaction force, self-floating, easy installation and so on. It is commonly used for ship-to-ship (ship-to-ship), ship-to-dock (ship-to-dock), barges, docks, etc. Due to its self-floating characteristics, it is especially suitable for installation in wharves with large changes in tide level. Among them, the filled rubber fender is especially suitable for applications in harsh environments such as offshore drilling platforms because of its maintenance-free and long service life.