This Portuguese navigation manual, written by the noted cartographer J.E. Lopes Banhos, provides detailed tables and charts for solving a wide variety of navigational problems. Whether you are a sailor, a student of history, or a lover of cartography, this book will fascinate and inform you.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.

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