The Use of Radar at Sea

London: The Institute of Navigation and Hollis and Carter, 1978. Fourth Revised Edition. Third printing. Hardcover. Good/Fair. xiv, 280, [2] pages. Illustrations. Figures. Charts, Appendices (Echo Recognition Table, Marine Radar Performance Specification, 1968, Some Constants, Formulae and Useful data, Useful Test Equipment, A Short Glossary of Terms). Index. DJ, price clipped, soiled and edges worn with small tears. Some cocked. This book had been completely revised and brought up to date from the previous edition. The principal technical subjects introduced into this book deals with True Motion, electronic markers, transistors, the universally adopted slotted waveguide aerial and some plotting facilities. The Institute of Navigation (ION) is a non-profit professional organization advancing the art and science of positioning, navigation and timing. It was founded in 1945 and serves communities interested in navigation and positioning on land, air, sea and space. It is a worldwide organization with members in more than 50 countries. As of 2014, the ION has approximately 2,800 members. During World War II, the field of navigation experienced "dramatic developments [during] a period of fast-moving changes... People recognized the need for an organization to provide a forum for discussion [of the] various aspects of navigation." Dr. Samuel Herrick, assistant professor of astronomy at UCLA, proposed an institute for navigation. Dr. Herrick envisioned a research center and publication of a journal. On June 25, 1945, the Institute of Navigation was founded at an organizational meeting held at UCLA. The Institute's journal, NAVIGATION, was first published in March 1946. In 1961, aviator Dot Lemon became the ION's first woman president.