The average humidity during the year is listed here for the largest cities in the United States. The tables below give annual averages for the day along with morning and afternoon relative humidity levels.he average humidity during the year is listed here for the largest cities in the United States. The tables below give annual averages for the day along with morning and afternoon relative humidity levels.
Destroyer escort. A destroyer escort (DE) is the classification for a smaller, lightly armed warship designed to be used to escort convoys of merchant marine ships, primarily of the United States Merchant Marine in World War II.
Since the destroyer was the only surface fleet unit that could effectively locate, attack and destroy a submarine, it was logical that we should develop a destroyer type that would concentrate on the submarine and thereby release destroyers for fleet assignment. Hence, the destroyer escort. By July of 1943, the program was going full blast. No less than sixteen U.S. yards were involved in building DEs. Between February 1943 and the end of the war in September 1945, 563 DEs were built.