2021 First came the dredgers, the scientists who dragged giant shovels behind sailing ships and picked through the biological rubble. Vivian Yee New York Times, Star Tribune, 27 Mar. Kyle Mizokami, Popular Mechanics, 9 June 2023 Several dredgers, including a specialized suction dredger that can extract 2,000 cubic meters of material per hour, were digging around the vessel's bow, which is wedged into the canal's eastern bank. William Booth, Washington Post, 24 July 2023 But recently, Beijing laid claim to 90 percent of the 1.3 million square-mile sea, and has used dredgers to expand dozens of islets and shoals, fortifying them with anti-ship and anti-air missiles, and military-grade airfields. This paper provides an overview of the capital dredging at the Port of Townsville, with emphasis on geological setting, geotechnical investigations, capital dredging requirements, bathymetry, dredging methods/plant and dredged material placement options.Noun All this was happening in the narrow confines of navigable waterways busy with commercial traffic, as container ships, sand dredgers, tug boats and ferries made their way through the race. In accordance with relevant state and commonwealth regulations, the capital dredging material derived from the Port of Townsville may be placed at a designated ocean site or brought ashore for land reclamation. To ensure the safety of the surrounding environment, the Port of Townsville has implemented integrated proactive approaches that consider environmental matters from capital dredging project planning and design stages. While necessary to support the economic growth of the region, major port development works such as capital dredging have the potential significantly impact on the natural environment. To determine the technical parameters of quantity, quality and types of materials to be dredged, the Port of Townsville undertakes hydrographic survey offshore geophysical and geotechnical investigations that define dredging projects. The port's capital dredging campaigns over the last 40 years has enabled deepening and widening of the existing inner harbor basin and approach channels, beside development of outer harbor. In order to improve navigational safety and operational efficiency of vessels and to cater for larger ships with deeper draughts, the Port of Townsville conducts capital dredging.
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