Hydrographic Surveys |
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Monteith & Sutherland Limited have been providing hydrographic surveying services since 1988. Currently we use Hypack surveying and navigation software interfaced with a digital depth sounder and a DGPS receiver. Rigorous hydrographic surveying procedures are used to correct for positional latency, calibrate the speed of sound and correct for tidal variations therefore ensuring accurate depth data. Ground proofing the horizontal datum, particularly related to dredging contracts, has proven critical since coordinate transformations are often required. Pre and post dredge volume calculations are generally required for the contract specifications and payment quantities respectfully. Volumes, plans and cross sections are also essential tools for the quality control process throughout the construction process. |
