U.S. Navy Bathyscaph Trieste, 1974. The mammoth float section of the Bathyscaph Trieste, DSV, being prepared for display at the Navy Memorial Museum (now National Museum of the U.S. Navy) at the Washington Navy Yard, Washington, D.C. Photographed by PH1 Richard A. Pendergist, 1974. U.S. Navy Photograph now in the collections of the National Archives. Note, photographed from reference card only. (2016/02/17).