![]() ![]() There are some special applications that have been using large semi-custom Liebherr hydraulic excavators. At a higher level, the barge may have a fixed crane with a turret like tub or occasionally a ringer mount. On the deck of these barges will be a duty cycle crawler or rubber-tired crane usually rigged for clamshell and/or drag line use and often secured to the deck by wires/chains and turnbuckles. Or, more commonly, they are all welded steel mono hull barges of the most common sizes, 110’, 120’, or 140’ in length. ![]() The floating object can be truckable interlocking floats such as Shugart, Flexifloat, Rendrag. A third area of equipment is the support equipment for the actual material movers.Ī mechanical or bucket dredge, at its simplest, is a floating object supporting a crane. The big division in dredging equipment is between the two main ways of moving material, namely mechanical and hydraulics. Such as the commercial sand and gravel pits that service the construction, road, and concrete industry, mining, and some sections of the fishing industry. Or, you may want to use or process the material being moved. This is creating hills and overpasses from “borrow pits”, or beach or wetlands replenishment. You may want material at a specific location. This would be the dredging out of sludge ponds, docks, marinas, canals, harbors, rivers, and shipping channels. You may not want the material at its current location. The main purpose of dredges is to move sand, soil, mud, gravel or, rock, from one area to another. Dredges are simply material movers afloat. The dredging industry is one of the few industries where the marine world and the machinery and equipment world overlap. Marine Construction Magazine - MCMag Issue IV 2019 The Identification and Appraisal of Dredging Equipment ![]()
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