The Underwater Preserve / Marine Sanctuary currently encompass 448 square miles of Lake Huron surrounding Alpena, Michigan.  The waters around the Underwater Preserve / Marine Sanctuary are commonly known as “Shipwreck Alley” due to bad weather, thick fog, and numerous rocky shoals which have led to the sinking of many ships, most of which have been well preserved, with the exception of the shallow wrecks which have succumb to the damages of ice, and wave action, however some the deeper wrecks look as if they could be floated off the bottom, and continue their voyage. The TBUPC members volunteer at numerous dive, and sportsmen shows, we also volunteer at NOAA’s ROV competition, and Maritime Heritage Festival held annually in Alpena.