DSC?s advanced hydraulic systems, however, consume only 37.5 per cent of the pump?s power. Alternately, a pressure compensated system (typically found on modern dredges) consumes approximately 50 per cent of the pump?s power. In a typical hydraulic system, where 50 per cent of the system?s flow and 75 per cent of the pump?s pressure are required for the task, a conventional fixed displacement system (found on older portable dredges) will consume 75 per cent of the pump?s power. This not only reduces the power consumption, but also reduces the required cooling, tank capacity, and filtration.
The DSC hydraulic system design provides the same peak level of performance with just one engine.Īll DSC dredges utilise integrated load sensing, pressure-compensated hydraulic components as standard. With fuel being the highest single cost of operating a dredge, the fuel savings realised by the elimination of one engine are significant. Older designs require two engines for peak performance, one for the dredge pump and one for the hydraulic system. The modern DSC design of a single engine and advanced hydraulic system provides maximum fuel efficiency and long component life. They both have well over 10,000 hours of use to date, and are still hard at work.Įach of the three new Shark dredge units is powered by a single Caterpillar C32 ACERT diesel engine, rated 1,125 hp, and features 17-m (55 ft) digging depth capability. During their first three years of service, the units worked 20 hours per day, six days per week. In 2011, DSC delivered the country?s largest dredges ? two 24-inch Marlin Class dredges, each with 23-m (75 ft) digging depth capability. DSC delivered its first 18-inch Shark dredge to a contractor there in 2010. The contractors will use the new dredges to restore navigability to Bangladesh?s 24,000 km of rivers, streams and canals under Bangladesh Inland Water Transport Authority (BIWTA) and Bangladesh Water Development Board (BWDB) projects.įollowing a 2009 study, the BIWTA has been calling on private contractors to help meet the demand for river dredging in Bangladesh. The second dredge will ship in July while the third dredge in February 2018. DSC Dredge recently shipped one of three new 18-inch Shark Class portable cutter suction dredges to contractors in Bangladesh.
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