Marine Rubber Floating Pneumatic Fenders Yokohama Fender is a leading anti-collision device for marine applications in the world today.This fender is made of synthetic-cord-reinforced rubber sheets with compressed air inside to enable it to float on the water and work as a protective medium.Therefore,pneumatic rubber fenders serves as a critical protective medium against collision when ship-to-ship(STS) transfer operations and ship-to-dock(STD) berthing and mooring operations.