 The Delawares carried two 21 @-@ inch ( 533 mm ) torpedo tubes below the waterline . The Bliss @-@ Leavitt 21 @-@ inch Mark 3 Model 1 torpedo designed for these tubes had an overall length of 196 in ( 5 @.@ 0 m ) , a weight of 2 @,@ 059 lb ( 934 kg ) and propelled an explosive charge of 210 lb ( 95 kg ) of TNT to a range of 9 @,@ 000 yd ( 8 @,@ 230 m ) at a speed of 27 kn ( 31 mph ; 50 km / h ) 
