ホヴァルツヴェルケ＝ドイツ造船
The s are a variant of the Type 209 diesel-electric submarine designed by Howaldtswerke-Deutsche Werft. Two vessels of this class were constructed at MDL. These were the first two indigenously built submarines in India. was commissioned on 7 February 1992 and was commissioned on 28 May 1994.