what does dd stand for in the navy
Hull classification symbol It is important to understand that hull number letter prefixes are not acronyms, and should not be carelessly treated as abbreviations of ship type classifications. Thus, "DD" does not stand for anything more than "Destroyer". "SS" simply means "Submarine". And "FF" is the post-1975 type code for "Frigate."[6]
History of the United States Navy In March 2007, the U.S. Navy reached its smallest fleet size, with 274 ships, since World War I. Since the end of the Cold War, the Navy has shifted its focus from preparations for large-scale war with the Soviet Union to special operations and strike missions in regional conflicts. The Navy participated in the Iraq War and is a major participant in the ongoing War on Terror, largely in this capacity. Development continues on new ships and weapons, including the Gerald R. Ford-class aircraft carrier and the Littoral combat ship. One hundred and three U.S. Navy personnel died in the Iraq War.[165] U.S. Navy warships launched cruise missiles into military targets in Libya during Operation Odyssey Dawn to enforce a UN resolution.[166]