 The submarines have four launch tubes in their <unk> and can carry up to 12 K @-@ 15 <unk> missiles with one warhead each ( with a range of 750 km or 470 mi ) or 4 K @-@ 4 missiles ( with a range of 3 @,@ 500 km or 2 @,@ 200 mi ) . The submarines are similar to the <unk> @-@ class submarine of Russia . The Indian Navy will train on INS <unk> , an <unk> @-@ class submarine leased from Russia in 2012 . 
