Knoop Holding BV has three subsidiaries:

  • Knoop Baggerwerken BV (contractor in natural construction projects)
  • Knoop Machinery BV (buying and selling of dredging equipment, accessories and construction machines) 
  • Waterking BV (buying and selling of amphibious equipment)


Jakob Knoop started buying and selling dredging equipment in 2001 under the name Autoport Machinery. Autoport Machinery formed part of Knoop Baggerwerken. By expanding the commercial activities, a separate BV was established in 2007; Knoop Machinery BV. The activities were expanded in 2013 to include the sale of construction machines.


Subsidiary Knoop Baggerwerken BV specialises in contracting for and executing specialised dredging operations in nature reserves with poor load-bearing soil. The amphibious excavator developed and built in-house for this field of work was first commissioned in 2007. In 2009, Knoop Machinery BV started with the production of the amphibious excavator ‘Waterking’. Waterking BV was established in 2010 for the sale of amphibious equipment.