Typical USN Mahan-class destroyers in their 1942 appearance; based on DD378 Smith (x7) and DD364 Mahan (x8). Note the differences of their aft deckhouse.
Displacing 1450 tons, 16 ships were built between 1935 and 1937 (excluding the Dunlap and Fanning), with 6 lost during WW2.
Selected Online readings:
http://navypedia.org/ships/usa/us_dd_mahan.htm
http://en.wikipedia.org/wiki/Mahan_class_destroyer
http://destroyerhistory.org/goldplater/mahanclass/