It's hard to believe that it's taken 90 episodes to highlight our hydrographic survey brethren. David O'Brien & David Graves from SurvTech Solutions, Inc joined us to talk about all things hydrographic/bathymetric surveying. We discussed the history of this unique profession, the different mapping applications and techniques, the challenges hydro-surveyors face on a daily basis, the different platforms and watercraft utilized, how water conditions affect the approach and deliverables, and so much more. Sir Richard Branson makes an appearance...sort of but not really. Music for this episode by Whitesnake!!