Dive log book software from Sea Wolff Diving Software has been available and supported since 1992. Dive log books were designed and developed by a professional PC application developer that is also a SCUBA instructor. The Sea Wolff Dive Log and Sea Wolff Instructor Log for Windows support SCUBA Divers, snorkelers, divemasters, instructors, and SAR Dive Rescue Teams. In addition to sales and technical support for divers, instructors, scientific and dive rescue team logbook programs, we have demos for downloading, book and video sales, travel information, and links to other useful sites. Our group includes dive instructors, marine biologists, underwater photographers and, of course, PC Application Developers.