Wind Calculator
By DBG Nautical
Based on ship's data (heading and speed over ground), this nautical wind calculator returns true and obvious wind (speed and direction). Anemometers on board of a ship often measure apparent wind. This app lets you quickly convert to true wind.
You can also convert true wind to apparent wind. The calculator has a help web page which clearly explains all symbols used.
The power of this calculator is the graphical answer or plot, clearly displaying how wind vector and ship motion vector are added as a vector sum. Make certain you perceive this plotting approach very well.
In the theory part, the Beaufort scale of wind pressure and effects of wind on the ocean are explained. This will help you estimating true wind path and wind pace based mostly on the state of the sea.
This part ends with some useful formulas to convert between true and apparent wind.
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