 The Arihant class ( Sanskrit , for Killer of Enemies ) is a class of nuclear @-@ powered ballistic missile submarines being built for the Indian Navy . They were developed under the US $ 2 @.@ 9 billion Advanced Technology Vessel ( ATV ) project to design and build nuclear @-@ powered submarines . 
 The Arihant class ( Sanskrit , for Killer of Enemies ) <a href='drop_aux' title='1'><mark>is</mark></a>a class of nuclear @-@ powered ballistic missile submarines being built for the Indian Navy . They <a href='uninflect' title='2'><mark>were</mark></a> developed under the US $ 2 @.@ 9 billion Advanced Technology Vessel ( ATV ) project to design and build nuclear @-@ powered submarines . 
The Arihant class ( Sanskrit , for Killer of Enemies ) a class of nuclear @-@ powered ballistic missile submarines bein built for the Indian Navy . They was developed under da US $ 2 @.@ 9 billion Advanced Technology Vessel ( ATV ) project to design and build nuclear @-@ powered submarines .