Drownproofing is a method for surviving in water disaster scenarios without sinking or drowning. It is also famous as a class once required at the Georgia Institute of Technology. History Drownproofing was developed by swimming coach Fred Lanoue, known to students as Crankshaft because of his limping gait. It was first taught in 1940. His method was so successful that it gained national recognition, and Georgia Tech soon made it a requirement for graduation, until 1988. The US Navy also took interest, and adopted it as part of their standard training. It is claimed that during Lanoue's time teaching at Tech from 1936 to 1964, he taught drownproofing to some 20,000 students. Once they had mastered the Drownproofing technique, students learned to stay afloat with their wrists and ankles bound, swim underwater, and retrieve diving rings from the bottom of the pool using their teeth. Lanoue published a book called Drownproofing, a New Technique for Water Safety in 1963. Georgia Tech dropped the course from its curriculum in 1988, as part of a downsizing of its physical education and athletics department. Drownproofing has been for many years widely taught to recruits in the U.S. Navy, U.S. Marine Corps, and U.S. Coast Guard. Reagh "Doc" Wetmore, swimming coach at Boston University, shared Fred Lanoue's enthusiasm for Drownproofing and continued to teach the technique until his retirement at the end of 2005. Technique In Drownproofing terminology, the great majority of people are "floaters". That is to say that, with the lungs fully inflated, they have slightly less specific gravity than water and will not start to sink until they exhale. An average floater has of positive buoyancy in fresh water. "Sinkers" can also benefit from a modified technique, but will find it more difficult to learn and will probably need specialised coaching. In the Drownproofing survival technique, the subject floats in a relaxed, near-vertical posture, with the top of the head just above the surface. Using the arms or legs to exert a downward pressure, the subject raises himself sufficiently so that the mouth is above the surface and a breath is taken, before dropping back into the relaxed float. This is done several times a minute (typically between 5 and 10), depending upon the needs of the individual. It is important to keep the lungs fully inflated for the maximum possible time and to exhale and inhale rapidly when a breath