Keywords: indoor monochrome 80-G-707441: Deep Sea Diving School, Naval Gun Factory, Washington, D.C. Pressure tanks are used by the divers to simulate depths desired. In this stage of training, each student makes dives to a simulated depth of 300 feet, released February 3, 1950. U.S. Navy Photograph, now in the collections of the National Archives. (2016/06/14). 80-G-707441: Deep Sea Diving School, Naval Gun Factory, Washington, D.C. Pressure tanks are used by the divers to simulate depths desired. In this stage of training, each student makes dives to a simulated depth of 300 feet, released February 3, 1950. U.S. Navy Photograph, now in the collections of the National Archives. (2016/06/14). |