The Medicare Coverage Database (MCD) contains all National Coverage Determinations (NCDs) and Local Coverage Determinations (LCDs), local articles, and proposed NCD decisions.
USS CONSTITUTION. The Constitution--called Old Ironsides because cannonballs could not penetrate her tough oak sides--was one of the first of the original six frigates that made up the U.S. Navy. A 44-gun frigate built at the Edmond Hartt Shipyard, Boston, MA, in 1797.
Named by President George Washington after the Constitution of the United States of America, she is the oldest commissioned naval vessel afloat in the world.[Note 2] Launched in 1797, Constitution was one of the six original frigates authorized for construction by the Naval Act of 1794.