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The History of Pursuing Hydrographic Measurement Accuracy


February 23, 2021
The profession of hydrographer is built upon measurement accuracy. Ever since Lucas Janszoon Waghenaer produced the first true nautical charts in 1584, hydrographers have been working to improve the accuracy of their measurements. For anyone fortunate enough to have reviewed Waghenaer’s atlas, the
Spieghel der Zeevaert (The Mariner’s Mirror), one of the first questions that comes to mind is how accurate are these charts? As the technology of the times was crude at best, it would be difficult to evaluate his charts by modern standards. However, two soundings stand out as indicative of both the relative accuracy of his data and Waghenaer’s integrity. ....

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