 As built , the O 'Brien @-@ class ships were 305 feet 5 inches ( 93 @.@ 09 m ) in length ( overall ) , were 31 feet 2 inches ( 9 @.@ 50 m ) abeam , and had a standard draft of 9 feet 6 inches ( 2 @.@ 90 m ) . The hull shape featured the distinctive high forecastle typical of U.S. destroyer classes since the 1908 – 09 Smith class , the first destroyers designed to be truly ocean @-@ going vessels . The ships displaced between 1 @,@ 020 and 1 @,@ 090 long tons ( 1 @,@ <unk> and 1 @,@ 110 t ) with a median of 1 @,@ 050 long tons ( 1 @,@ 070 t ) . 
