Originally published by the U.S. Navy as a training text for Underwater Demolition Team (UDT) members, deep sea divers and frogmen, this Diving Manual is an indispensible reference for anyone interested in exploring the depths. Volume 1 (sold separately) presents the general principles of diving. Volume 2 presents information about surface supplied air and scuba diving. Special sections include technical descriptions of equipment, maintenance, medical aspects of diving, hazards, normal procedures and emergency procedures, This historical book is a carefully created copy of NAVSHIPS 250-538, originally created during WWII and revised periodically. If you're interested in diving, you MUST have this book on your shelf!