Effie M. Morrissey (now Ernestina) was a schooner skippered by Robert Bartlett that made many scientific expeditions to the Arctic, sponsored by American museums, the Explorers Club and the National Geographic Society. She also helped survey the Arctic for the United States Government during World War II. She is currently designated by the United States Department of the Interior as a National Historic Landmark as part of the New Bedford Whaling National Historical Park. She is the State Ship of Massachusetts.