Heron has available over 280m of 350mm diameter floating dredge hose, 120m of floating pipeline, over 2000m of flanged steel pipeline and an extensive range of rubber flexible landline hoses. It have been extensively upgraded and modified and currently can dredge to 8.0m with a 550hp 12/10 Warman inboard dredge pump.īoth dredges are ably supported by the workboats Buka and Rua which are used to tow and manoeuvre the dredges, move anchors, transfer fuel and crew transfer. The revolutionary GOLD BUDDY 10 X 17 Gold Wedge Sluice. The dredge Beaver started life as an IHC Beaver Cub. Honda 2.5 HP Engine coupled to a JOBE 95 GPM high pressure aluminum pump. Today Kotuku is fitted with a 12/10 Warman underwater dredge pump and is able to dredge to a depth of -16m. Kotuku is a cutter suction dredge that has evolved over a period of approximately 35 years, each and every modification has been completed in Heron Constructions Papakura or Tauranga workshops. Both cutter suction dredges are demountable and as such are easily transported for project to project whether that be by road of sea. The current cutter suction dredges are Kotuku and Beaver, they have been used to complete port dredging, river crossings, marina construction and maintenance, river and channel desedimentation, sand winning projects throughout New Zealand and the South Pacific.

Heron Construction commenced cutter suction dredging operation in 1971.

Floating dredge pump