Floating Crane Selection

摘要

A Worldwide development and growth has resulted in increased demand for coal, ore, grain and fertiliser. At current prices, export of these commodities from inland sites via river barges becomes profitable in Indonesia, South America and CIS countries like Ukraine. The bulk cargo is loaded into river ships/barges and moved downriver to a suitable deep water (depth > 14m) anchorage for off-loading onto 60,000dwt-80,000dwt Panamax size oceangoing bulk carriers. The bottleneck of the lack of a modern bulk loading terminal in these locations is overcome by fastening a floating crane to the bulk carrier side. The loaded barges are then tied up to the available crane side and the bulk cargo hoisted by the rotating crane into the bulk carrier. During the unloading a tracked bulldozer is lowered into the barge for the last stages of the bulk cargo off-loading. Floating cranes have been successfully used in this operation for several years. The reported throughput ranges between 14,000tonnes/day for a 25tonne floating crane to 22,000tonnes/ day for a 36tonne floating crane.