Hydrographic Surveying

To complement our dredging operations Heron Construction can provide a complete hydrographic survey service. This includes pre and post dredge surveys, interim progress surveys, LINZ clearance survey, volume calculations and supplying reports and plans in either paper or digital format.

Heron Construction has two dedicated survey vessels, White Pointer and Kaiwea both these vessels were purpose built by White Pointer Boats in Gisborne.  White Pointer is equipped with the latest Reson 7125 SV Multibeam Echosounder & Applanix Pos MV inertial motion sensor while Kaiwea is fitted with a Reson 215 single beam echo sounder. We also have available portable survey equipment that allows us to convert almost any craft in a survey vessel.

As well as having our own in-house survey team, Heron can and has worked in conjunction with independent registered hydrographic surveyors in both New Zealand and Australia for auditing and QC purposes and to provide navigational channel clearance surveys when required.

Heron's range of survey equipment includes:

White Pointer

Kaiwea