The Revised Fourth Edition of the NOAA Diving Manual, Diving for Science and Technology, is one of the most detailed diving reference books available and is a valuable resource for all who are interested in a complete encyclopedia of diving technology, equipment, techniques, and procedures. More than 100 authors and reviewers, selected from a diverse spectrum of experts in recreational scuba diving, commercial, military, scientific and research diving, combined their expertise to address the complex issues involved in today's diving. This new edition contains twenty-one chapters on all aspects of diving: techniques to improve the methodology of underwater scientific research, new gear, operational techniques and details to assist the diver in diving safely. In addition, there are ten appendices, including a glossary, references, and a detailed index. The technologies of rebreathers and mixed gas diving, including nitrox and oxygen are included; diving physics, physiology, decompression and diving medicine have been updated to reflect the recent development in the diving industry. The never-before-published NOAA Nitrox Tables and Nitrox Diving Procedures allow deeper and/or longer bottom times to increase diver efficiency when using nitrox, without affecting safety or increasing decompression time. The most current and up-to-date U.S. Navy Dive Tables are also included. The NOAA Diving Manual is a valuable resource all serious divers must have!