Our skills in the hydrographic survey industry are due to many years experience in planning, conducting and producing accurate hydrographic surveys for national and international charting requirements as well as for regional projects. DML maintains expertise in precise navigation, geodetic operations and tidal processes, which are all fundamental to the collection of accurate data.
Vessels and equipment are carefully selected to suit the particular requirements of each task. We operate our own fleet of Stabicraft and Senator in-shore survey boats for harbour and coastal projects, ranging in size from 3-9m. Other vessels are at our disposal, varying in size from small boats for intricate in-shore work, to medium and large sized workboats for larger off-shore surveys.
We use high-accuracy differential GPS or RTK GPS for vessel positioning as well as motion sensors to remove vessel heave. This information, along with depth data from digital echo sounders, is interfaced with our Trimble HYDRO Pro survey software. Data can then be presented as stand-alone sounding plans or as digital data in a variety of formats for integration with other digital and GIS systems. A variety of two and three-dimensional terrain models can also be produced using our contouring and surface mapping software.
We also have a complete set of modern survey instruments for land-based work including RTK GPS, total station instruments etc.