The client required a hydrographic survey of a potential sand dredging lease area in northern Moreton Bay, Queensland. The proposed lease area comprised two areas, one on the Central Banks covering 2.4 km2 and one on the Western Banks covering 4.1 km2. The area has a depth range of 0.5m to 15m and was required to be surveyed at 20m intervals and plotted with 0.5m contours to satisfy Queensland Government requirements.
Our service was to plan and preform the required hydrographic survey using Differential GPS and digital echo sounders. Position and depth fixes were recorded automatically using software developed in-house. Our service included contour plotting of the area which was also performed automatically using the CGR hydrographic survey software.