A luffing crane is a crane with which a load can be moved to or from the crane horizontally.

Level luffing crane Normally a crane with a hinged jib will tend to have its hook also move up and down as the jib moves (or luffs). A level luffing crane is a crane of this common design, but with an extra mechanism to keep the hook level when luffing. This type of crane is used in the Sky Gate Project due to the existence of two adjacent buildings as shown in the following figure. It is practically impossible to hoist material to the construction site by using a normal or strut-type cranes. The buildings to the right and the left of the tower acted as obstacles to the jib of such a crane. This is why, in this scenario, a luffing-type crane was ultimately the best choice considering that its moving jib could easily dodge the buildings.