6 Heavy Cruisers
Also under 10,000 tons to conform to the terms of the Washington Naval Treaty, the Northhamptons had 9 main guns in three turrets, rather than 10 main guns in four turrets, thus making it possible to increase the armor belt from 2.5” to 3.5” without adding weight. These ships also featured a hangar for sea planes and bunks instead of hammocks for the crew.
All six of the class were heavily involved in the War. Three were lost.
Three of the class were built to be flagships. The last one built, the USS Augusta carried President Roosevelt to Newfoundland in August, 1941 to meet with Churchill to draft the Atlantic Charter. After serving in many missions in the Atlantic theatre, including D-Day, Augusta took President Truman to Europe for the Potsdam Conference in July, 1945. It was on the return trip that President Truman first got word that the atomic bomb had been dropped on Hiroshima. He burst into the the officers mess to announce the dawn of the nuclear age, a secret kept from everyone before that moment. My dad was in that mess and describes in moment
in his memoirs.