A luffing crane is a type of construction crane that features a boom that can be raised and lowered at an angle. This design allows the crane to operate in tight spaces, making it ideal for urban construction sites. The luffing motion helps to minimize the swing of the load, providing better control and safety during lifting operations. These cranes are often used for lifting heavy materials, such as steel beams and concrete blocks, in high-rise building projects. Their ability to adjust the boom angle makes them versatile and efficient, especially in crowded environments where space is limited.