In this video, we talk you through how to calculate tidal flow rate and direction using a tidal atlas and the tide tables in the 2020 Reeds Tidal Almanac. 

In other articles, we talked about how we apply variation and deviation. In this article we explain how we establish variation on an older paper chart where variation has been changing over time.

This video explains how you calculate variation in any given year on an older chart. If you want to know how to apply variation, click here.

Most marine weather forecasts are issued using the Beaufort Scale but most sailors use wind speed in knots when sailing. In this 3-minute video, we show you how to convert from Beaufort to Knots and back in less than 3 seconds!

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Weather in the Northern Hemisphere