Scuba Diving, Scuba, Scuba Market Report, Blue Economy, Travel.
research: 71% Books (e.g., dive guides): 51% Slates about the dive site: 36% Boating charts: 39% Have you ever used more sophisticated underwater navigation systems (e.g., GPS/Sonar/USBL/SBL/LBL/Inertial Guidance System)? Yes: 19% No: 81% Among those who answered yes to the previous question: Did