| 摘要 |
The present invention combines a gantry crane (10) with one or more rotating boom cranes (11, 12, 17, 18) to increase cargo productivity economically. There can be two luffing boom cranes attached to the gantry and two slewing boom cranes attached to the gantry. One can retrofit an existing gantry by attaching a boom crane and frame to a ship-to-shore gantry. |
