Abstract: Apparatus and methods are described for modification of a scraper, or similar heavy equipment, for operation in wet or swampy areas including dredge disposal areas. A floatation tire assembly is described which is removably affixable to the scraper to give the scraper the amphibious capability to operate in the wet, swampy environment.

Abstract: A hydraulic winch which is capable of generating significant amounts of torque and providing very high line pull even after a significant amount of cable is wrapped onto its spool. The winch spool is also capable of carrying a large amount of thick cable. It is useful in applications such as assisting maintenance of dredge disposal areas in which a ditching machine must be assisted by a tether across the pit of the disposal area. In the described embodiment, the novel winch includes a transportable base or skid which is affixable to a prime mover vehicle, a heavy duty spool, a chain drive and a power train. The power train for the winch is powered by a hydraulic motor. Through significant gear reduction via the chain drive and a hydraulic gear box, the winch is capable of generating sustained significant torque regardless of the amount of cable on the spool.

Abstract: Effective techniques and equipment are described for maintaining and improving dredge disposal sites. In one aspect, the use of winching equipment is described to move a digging vehicle within a containment area for effective creation of ditching to permit substantial dewatering and drainage of the dredge spoil to dry it. Substantially dried spoil is removed from the containment area pit using amphibious scraper equipment. The substantially dried spoil may then be used to build up the berm surrounding the dredge pit.