The new digital Global Maritime Distress and Safety System (GMDSS) is revolutionizing emergency communications and international search-and-rescue at sea. Clearly and concisely, this one-of-a-kind guide presents what you should know about using digital marine radios for emergency assistance and enhanced safety.

This collection of squadron histories has been prepared by the USAF Historical Division to complement the Division's book, Air Force Combat Units of World War II. The 1,226 units covered by this volume are the combat (tactical) squadrons that were active between 7 December 1941 and 2 September 1945. Each squadron is traced from its beginning through 5 March 1963, the fiftieth anniversary of the organization of the 1st Aero (later Bombardment) Squadron, the first Army unit to be equipped with aircraft for tactical operations. For each squadron there is a statement of the official lineage and data on the unit's assignments, stations, aircraft and missiles, operations, service streamers, campaign participation, decorations, and emblem.

This clear and accessible introduction to coastal navigation outlines most of the techniques of piloting that are still fundamental to safe navigation even with modern electronic aids. Step-by-step, the reader is guided from simple to more complex piloting solutions. In addition to dead-reckoning techniques, the author covers tides and currents and explains how to use LORAN C and GPS. There are numerous illustrations throughout the text and practice problems at the end of each chapter. Key Advantages: fully updated new edition, perfect for sail and power, clear layout and instructions, comprehensive overage of all aspects of coastal navigation, review questions and answers, and suitable for self-study and Coast Guard or other similar courses.

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