Hydrographic and Bathymetric SurveysBathymetric Surveys
Spatialmaps focuses on develivering hydrographic and bathymetric surveys services through adopting latest technology with wide partnership across players in the industry.
Spatialmaps would typically provide horizontal and vertical survey control points along the corridor to be surveyed. We would then provide topographic surveys of the ground surface down to the water level. Survey control information would provide controls framework for conducting the Hydrographic or Bathymetric Surveys allowing design of infrastructure along the water front and off-sea infrastructure constructions.
Our hydrographic capacity includes operate vessels equipped with the latest multibeam, sector scan and single beam echo sounders, on-board processing and data displays, real-time centimetre level GPS position fixing, current metering ,side-scan sonar and magnetometers.
Bathymetric surveys allow surveyors and hydrographers measure the depth of a water body and map the underwater features of a water body. Multiple methods can be used for bathymetric surveys including multi-beam and single-beam surveys, sub-bottom profilers, and the Ecomapper Autonomous Underwater Vehicles.
Bathymetric surveys are used in various fields including port habour dredging and monitoring, contour of streams and reservoirs, leakage, water-quality studies, dam removal, biological spill,storage and fill in reservoirs and ponds.
In single beam bathymetry, an echo sounder is used to measure the depth by sending out a acoustic signal.
Even though there has been advancement with multibeam, single beam still remains a valid methodology for surveying especially on shallow water environments where the time required to achieve 100% insonification with a multibeam sonar is excessive or beyond a client’s budget.
Multi-beam surveys are used to gather detailed information about the features on the seabed by measuring multiple depths from a single transducer array at high resolution.
Multibeam surveys are routinely carried out in support of dredging projects for ports, harbours,offshore projects and facilitate the accurate calculation of dredge volumes.
• Bathymetric surveys of ports, harbours, marinas and the open coast
• Dredge volume calculations
• Nautical chart production
• Ground discrimination and seabed mapping
• Underwater search and hazard identification
• High resolution wall and structure inspection
• Reservoir volume calculations