The invention relates to a loading crane which comprises at least one extension arm (3) which can pivot about an essentially horizontal axis (4) and which is fixed to the crane frame (2) which can pivot about an essentially vertical axis.

The invention specifies a computer-assisted method for planning the trajectories of suspended loads (SL), for example when being transported by slewing (K) or gantry cranes.

Booms (12, 13) are combined to a fork-shaped swing crane-boom unit (11, 12, 13).

A pivoting crane, placed atop the mast, enables the mounting and dismounting of the pods.

The winding device (4) is mounted on the stern of the vessel body.

Alternatively the guns could be unloaded through a pivoting cradle assisted by two winding drums driven by the engine.

The invention further relates to a method for mounting the enclosing frame (1) and to use of an enclosing frame (1) for connecting a slewing tower crane to an object.

Hydraulic rotate system for swing crane, which essentially is constructed with hydraulic motor (A), blend (B), two-ways valve (C) and steering valve (D).

Method for operating a double pivoting crane, the booms being fixed together by means of a connecting bar, by control of one of the two booms.

The invention relates to a jib-bracing system for a revolving tower crane, in the case of which the length of a jib (2) and the length of a bracing means (5) for the jib can each be changed.