This amazing little book has seen me through Day Skipper, Yachtmaster, Tall Ships Races, night sailing, keelboat racing and cruising all over Europe. It taught me and I have used it to teach others. I have never gone sailing without it, even though I can now practically visualise every page!
This is at least partly because it is so small and handy - why wouldn't you take it with you when it is compact enough to fit in your oilskins pocket? It is also a truly unique and invaluable synthesis of the most essential and useful information on sailing, navigation tides and weather.
For those who are confident they know it all, this is still a great book to have on board as it's pictures and user-friendly style make it great for teaching novices. All this for less than the price of a plate of chips in the yacht club!