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S-44 and the systematic error

IHO standard S-44 is often used (or misused) to specify the quality of a hydrographic survey. While it is a useful tool, it is easy to misinterpret. One ‘misuse’ is...

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Echo Sounder Calibration Tool

HydroBar is a hydrographic tool for calibrating survey echo sounders during field surveys. A real-time sound velocimeter is combined with a sonar target (‘bar’) and Windows-based software which can run...

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Automatic calibration for MBES offsets

Currently, calibration of multibeam echosounders (MBES) for hydrographic surveys is based on the traditional ‘patch test’ method. This subjective method, although rigorous, has major drawbacks, such as being time-consuming (in...

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Calibration of Hydrographic Instruments

The MacArtney Group has started a calibration and maintenance service for oceanographic and hydrographic intruments: CTD probes, sound velocity sensors, current sensors, laser particle analysers, nutrient analysers and the repair...

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ECDIS Colour Calibration Panel Computers

The MPC-122-K marine panel computer is IP67-rated and ECDIS compliant with colour calibration capability. The panel features full-range dimming, optical bonding (optional), a wide viewing angle and colour calibration (ECDIS-compliant)....

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