AbstractDredging in navigation channels across off-shore bars and in tidal inlets or estuaries presents special problems not encountered in dredging in more protected inland waters. The greater exposure to wave action and often-swift and complicated reversing tidal currents impose an increased hazard of loss of or damage to dredging plant, more lost working time due to adverse conditions, increased cost of insurance, and other factors that tend to add to the difficulty and cost of such work. These special hazards require special countermeasures in the choice of a dredge, the conduct of the work, and the disposal of the dredged material. A knowledge of these factors is important to those engaged in coastal engineering.
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