Lot-741-1: U.S. Coast Guard, WWII. Coast Guardsmen Learn to Swim For Lives. If you dive over the side to save a life a good thing to know is the “hand tow.” Coast Guardsmen are taught this method of avoiding the death grip of a tired, panicky, possibly injured swimmer in a functional swimming course at Miami, Florida. Coast Guardsmen William H. Roberts and F.C. Smith demonstrate the hand tow. U.S. Coast Guard Photograph. Courtesy of the Library of Congress. Photographed through Mylar sleeve. (2016/06/03).