#dredger  a barge or barge-like vessel used for dredging
  supertype:  barge__flatboat__hoy__lighter  a boat with a flat bottom for carrying heavy loads (especially on canals)
  part:  dredge  a power shovel to remove material from a channel or riverbed
     part:  dredging_bucket  a bucket for lifting material from a channel or riverbed
     part:  scoop_shovel__scoopshovel__scoop  the shovel or bucket of dredge or backhoe

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