Sometimes you just want a quick and dirty calculation of significant wave height and period. Back in the day, these were calculated using the zero crossings method, and this can still be used if you want to avoid Fourier shenanigans. Here is a spread-sheet that will calculate zero-crossings period (\(T_z\)) and significant wave height (\(H_{1/3}\)). Now it's never been easier to check what scale of model yatch you should be using on your local duck pond! 8¬)
Click this link to download the spreadsheet.
As I said, it's quick and dirty - please leave messages in the comments or email me if you have any trouble with it. If you like this, subscribe to my blog to get email updates of new posts.
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