Abstract: The ship loading and unloading installation consists of a quayside gantry 0) with a vertically slewable jib (30) which is formed by a supporting arm (130) with a supporting frame (40) and a horizontally displaceable supporting frame (50) guided within the same which, at its free end carries a vertical conveyer (60) that can be made to travel in its height with a pallet conveying device constructed as a lifting platform (162), which interacts with a supplying or delivering path (70) for goods to be conveyed arranged in the jib (30), which comprises a conveying path (170) arranged within the supporting frame (50), a conveying path (270) arranged within the supporting frame (40) and a conveying path (370) arranged between these two conveying paths (170,270), which can be made to travel out from the interspace formed between the two conveying belts (170,270) through the supporting frame (50) being displaced out from the supporting frame (40), so that loaded pallets are transported on a conveying path with continu