 The Tucker class was the fourth of the five classes of " thousand tonners " . The earlier Cassin- ( DD @-@ 43 to DD @-@ 46 ) , Aylwin- ( DD @-@ 47 to DD @-@ 50 ) and O 'Brien @-@ class ( DD @-@ 51 to DD @-@ 56 ) ships were about 10 feet ( 3 @.@ 0 m ) shorter than the Tucker ships and had a lower displacement , between 40 and 80 long tons ( 41 and 81 t ) less than the median displacement of the Tuckers ; the later Sampson @-@ class ( DD @-@ 63 to DD @-@ 68 ) ships were the same length and displaced 10 long tons ( 10 t ) more . All five classes were armed with four 4 @-@ inch ( 102 mm ) guns , but the torpedo size and complement varied . All were equipped with four twin torpedo tubes loaded with eight torpedoes except for the Sampsons ( which had four triple tubes carrying twelve torpedoes ) , but the Cassin and Aylwin classes were armed with 18 @-@ inch ( 457 mm ) torpedoes ; the rest with 21 @-@ inch ( 533 mm ) torpedoes . The Sampsons were the only group originally equipped with anti @-@ aircraft guns , a pair of 1 @-@ pounder ( 0 @.@ 45 kg ) guns with a caliber of 37 mm ( 1 @.@ 46 in ) . 
