Dive computers provide an alternate method for planning repetitive dives. Many scuba spearfishermen use computers. Computers combine the functions of a depth gauge and dive timer into one unit. These devices use dive depth and time history to compute the no-decompression stop time limit at current depth. Between dives they display allowable no-decompression stop bottom times for various depths based upon repetitive dive history and surface interval.
Computers offer additional features that vary among models.
However, they help eliminate human error in calculating dive plans. Remember, no computer or dive planning table guarantees to prevent decompression sickness. Plan your dives conservatively and make minimum three minute, fifteen foot safety stops after each one. For more explanation on dive planning tools refer to Dive Computers, A Consumer's Guide to History, Theory, and Performance, Decompression Theory, Dive, Tables, and Dive Computers, and the PADI Encyclopedia of Recreational Diving. Continuous breathing becomes ingrained with experienced scuba divers.