Gantry Crane for Shipbuilding. Product Name: Gantry Crane for Ship Building. Lifting capacity: 2×50+100t, 2×75+100t, 2×100+160t, 2×150+200t, 2×400+400t. Span: 50~185m. Lifting height: 28~76/10~50m. The shipbuilding gantry crane can be single girder gantry crane and double girder gantry crane. When it comes toPerfect span and lifting