The Manual consists of five volumes, spread over two books: Book 1 contains: Volume 1 - Diving Principles and Policies: History of Diving - Underwater Physics - Underwater Physiology and Diving Disorders - Dive Systems - Dive Program Administration - Safe Diving Distances from Transmitting Sonar - References - Telephone Numbers - List of Acronyms. Volume 2 - Air Diving Operations (319 pages, 82 illustrations). Operational Planning and Risk Management - SCUBA Air Diving Operations - Surface Supplied Air Diving Operations - Nitrogen-Oxygen Diving Operations - Ice and Cold Water Diving Operations - Optional Shallow Water Diving Tables - U.S. Navy Dive Computer - Environmental and Operational Hazards - Guidance for U.S. Navy Diving on a Dynamic Positioning Vessel. Additionally, the publisher has remastered and redrawn illustrations throughout the Manual for clarity and reading enjoyment, as well as adding icons to cautions and warnings for greater visibility.