This is a modern perspective on celestial navigation, by a very expert and easy to read author. Even though he explains everything with simple relationships, he does confine his comments to celestial navigation. No attempt is made to rehash basic navigation procedures. This is why we recommend it as an intermediate book. On the other hand, if you have had previous experience with celestial navigation, this book will provide you with a wonderful reunion! It covers taking sights by the sun, moon, stars and planets, and discusses the advantages and disadvantages of each method. The author is partial to HO-249 sight reduction, but this should not deter an HO-229 fan. You will be taken carefully through several examples and situational illustrations, making this a very effective self-teaching guide. We highly recommend this book. SC, 2000, 136 pages, SW 2 lbs.