Starting in 1958 U. S. Navy submarines collected upward-looking sonar profiles, for navigation and defense, and converted the information into estimates of ice thickness.
DiMercurio was a 1980 honors graduate of the U.S. Naval Academy with a B.S. in mechanical engineering, a 1981 National Science Foundation Scholarship fellow at MIT with a masters degree in mechanical engineering, and an officer in the U.S. Navy’s attack submarine force.
After serving in the submarine branch of the US Navy, he worked in business while studying singing.
United States | United Kingdom | Republican Party (United States) | Democratic Party (United States) | United States House of Representatives | President of the United States | United Nations | Royal Navy | United States Senate | United States Navy | United States Army | Supreme Court of the United States | United States Air Force | Native Americans in the United States | United States Congress | Parliament of the United Kingdom | 66th United States Congress | Prime Minister of the United Kingdom | Navy | 74th United States Congress | 18th United States Congress | 73rd United States Congress | 54th United States Congress | 61st United States Congress | United States Marine Corps | United States Department of Defense | 64th United States Congress | 65th United States Congress | 53rd United States Congress | 52nd United States Congress |
(see Submarines in the United States Navy#Pressure and escape training and Steinke hood)