For the first time in over a decade the "US Navy Divers Handbook" is to be released with latest and most up-to-date Revision 6 tables. The Handbook not only contains the US Navy Decompression Tables but also the Recompression Chamber Operator's Handbook. It is pocket size, printed on waterproof/tear proof pages, and is easily referenced. Used internationally by recreational, commercial, and military divers because of its authoritative and approved procedures, it contains the latest decompression tables and techniques for avoiding decompression sickness. This durable handbook is a must for all divers and chamber operators. The Revised 6th Edition of the "United States Navy Diving Manual" incorporates many changes. The first major change is a complete revision of the air diving procedures and air diving tables in Chapter 9 of the Manual. 'The procedures and tables are the mature product of ten years of work including testing, rigorous analysis, and Fleet Diver feedback. The bottom line is that these new tables and procedures represent a quantum step forward in safe diving practices and correct identified safety deficiencies in the existing air tables that have been part of the manual virtually without significant change for fifty years' - Captain Rich Hooper, "USN Faceplate Magazine", Vol 11 No. 2. The second major change concerns the operation and procedures of the Oxygen Regulator Control Assembly (ORCA), a key material element that enables the proper implementation of the preferred air diving decompression regime in the revised Diving Manual: decompression with oxygen. The third addition is the training requirements for Oxygen Worker Training, a necessary element for commands to manage the oxygen systems which are required for the revised procedures.