These spiral bound splash-resistant cards make a quick reference to essential information, and help predict the weather

These cards should be carried on board. They contain all the weather information people find hard to remember such as Sea Areas, Coastal Stations, times of broadcasts, cloud systems, how to predict the weather around lows and highs, and the terms used in broadcasts.  Add a chinagraph pencil and you can fill in details and make predictions.

The Weather Companion can also be used as a revision aid for the various RYA courses, which it covers.