Submarine Sonar Manual

Originally printed in 1946, The Fleet Type Submarine series of technical manuals remains unparalleled. Contained in its pages and those of the companion texts are descriptions of every operating component aboard a fleet boat. The Sonar Operator's Manual Navpers 16167, was originally written to acquaint crewmen with the sub's underwater sound gear. Sonar is a term derived from the words SOund Navigation And Ranging, and aboard a submarine it is extremely vital. When the boat is submerged, listening is the main channel of information regarding the maneuvers of the enemy. The book contains information about how underwater sound gear operates, and how to identify important sounds and interpret them. It's a terrific reference for anyone interested in WWII or undersea technology. Originally classified "Restricted", this book was recently declassified and is here reprinted in book form. Care has been taken to preserve the integrity of the text.