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Calculators for Navigators *

The following Javascript based calculators were developed by Mr Jacky Wong, Senior Marine Officer in the Hong Kong Marine Department, who took an exceptional interest in applying the Javascript programming language in solving navigational problems. We used to have links to the Hong Kong website, but this has since gone off line. These are the original calculators as were published.

* Note: These calculators are provided to you 'as is' for your benefit and enjoyment. We cannot warrent their accuracy or suitability for navigation. You must do this for yourself.

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