Telescopic crane

A telescopic crane, comprising a substructure;

• a superstructure rotatably mounted onto the substructure;
• a counterweight and a telescoping boom structure including a main boom slewable about a luffing plane and having a boom base and at least one inner telescope section which is received in the boom base and displaceable between retracted and extended positions;
• and at least one guy mast, mounted to the boom structure, for increasing a load-carrying capability of the crane, said guy mast connected by a first tension means to a foot region of the boom base and by a second tension means to a head section of the inner telescope section, said first and second tension means extending substantially longitudinally in the direction of the boom structure, said guy mast being oriented with respect to the luffing plane at an inclination which is so selected that a lateral load acting on the boom structure is partially or entirely received by the guying.