Construction And Ready-To-Use Delivery Of A Floating Grab (Sg) Type I With Diesel-Electric Drive Concept And Movable Hydraulic Excavator With Fully Hydraulic Quick-Change System (Lot 1) And Conversion Of The Stilt Systems Of Existing Sg “Zander Ii” And “Steinbeißer” (Lot 2). The Stilts From Lot 1 And Lot 2 Must Be Identical In Construction.