This FULL-COLOR log book was created by divers, for divers, to make recording your dive data as fast and intuitive as possible. Check boxes and clearly defined sections ensure that you remember to record all your important data and that it is easy to refer back to when needed. There are enough pages to log a full 50 dives, as well as record your training, equipment inventory, and maintenance. Each log book contains guides for basic dive briefings, final safety checks, and basic formulas for calculating breathing gas usage and Nitrox maximum operating depth. The only logbook you will ever need!