Archaeologists from the Thunder Bay National Marine Sanctuary — with support from the Cooperative Institute for Ocean Exploration, Research and Technology — document the wreck of the schooner Defiance, which rests in 56 meters (185 feet) of water just north of the sanctuary. In order to capture the wreck's current state of preservation, the team produced hand-drawn maps and photomosaics. This type of archeological investigation is an important follow up to discovering new shipwreck sites. Image courtesy of Thunder Bay 2010 Expedition, NOAA-OER.
Thunder Bay 2010: Cutting Edge Technology and the Hunt for Lake Huron’s Lost Ships
Thunder Bay 2010: Mission Plan
NOAA Ocean Explorer Gallery