It is a perfect protecting equipment in the world which is used for advantage ship berthed. It uses compressed air as a buffer medium, absorb the energy of collisions when strike to the ship, it have some advantage that are: absorptive capacity of the impact large role, unit area of low pressure, high impact fatigue performance advantages such as outstanding and easy installation etc. It is widely used for protection of all the kind of ships, Ocean platform, Shipyard and Plover Ferry Terminal and so on.