Typically built on a four-legged tower structure and incorporating a crane, these gangways are generally telescopic and feature multiple levels that move up and down to different levels to accommodate a wide range of ship deck levels and movements (loading/unloading, surge, sway, drifts, etc).

The gangway’s movements are powered by hydraulic cylinders or winches operated by a hydraulic control box mounted on the lift platform. Once the gangway has been positioned on the ship’s deck and reaches its maximum high or low angle, the lift platform will automatically move to the next level without the need for an operator. Each lift station is accessible via the stairs and platforms mounted inside the tower structure.