The Medford Public Library is co-sponsoring the program “A History of Shipwrecks” with Captain Greg Ketchen. This talk will focus primarily on historic shipwrecks that have occurred south and east of Massachusetts. The region has been called the Graveyard of the North Atlantic with more than 3,000 wrecks here since European sailors first began exploring these shores. Because of the hazards experienced while sailing these waters, Massachusetts was the 18th-century birthplace of the modern United States Coast Guard. Advances in navigation, weather forecasting, response resources, and vessel technology over the past two centuries may have reduced the risks but have not eliminated them. The presentation will include an overview of shipwrecks, their causes, and the evolution of response resources and programs. Greg Ketchen is a retired U.S. Coast Guard captain living in Osterville. He is a volunteer at the Coast Guard Heritage Museum and has served as its president for the past six years. Register through the library’s online calendar to receive the Zoom link.