SMALL-SCALE DREDGING AND DESILTING EQUIPMENT

78 SMALL DREDGING EOUIPMENTTable 3. Characteristics of M-seriesI Length of standard boom I 11.00 m 1Engine31.5 HpTotal weight17 tStandard grab content 600 1Minimum water depth 0.60 mMinimum canal width 4.80 mThe M-series typically are used for dredging of silt and vegetation. As saidbefore, it is less suitable for work in hard soils, because of the use of clamshellor dragline bucket. The advantage of these machines is their long booms, of 10-I1 m long. This means that they have the capacity to dispose the materialfurther on the land or into spoil dump trucks directly.Positioning of the-machine can be done by means of cables or with a spudinstallation. When operating in canals which are also used for navigation, thecable-winch installation can be provided with extra cable outriggers whichallows boats to pass the wires.The mobile crane can of course also be used separately on the land.7. KONIJN AMPHIDREDGE FLOATING BULLDOZERS (FB)The FB-Amphidredge (see Figure 3) consists of the following components:- A main pontoon (supported by side pontoons, if necessary), with dieselengine, winches and a control panel;- A front-mounted dozer blade, copsisting of a central section and twohydraulically operated, movable side blades. The depth of the blades can beadjusted hydraulically.