Used this all last year on Georgian Bay collecting data from 5 or 6 buoys around me. It was vital in planning routes and trips where open water was not avoidable. Early 2014 some buoys were not sending data yet and I was receiving connectivity error messages.
App works great, simple user interface and very accurate. App developer was quick to respond to questions. Highly recommend this app to anyone who boats.
CDN Rob about Buoy Explorer NOAA Marine Weather Conditions, v1.2.3