 The lead vessel of the class , INS Arihant was launched in 2009 and after extensive sea trials , was confirmed as ready for operations on 23 February 2016 . Arihant is the first ballistic missile submarine to have been built by a country other than one of the five permanent members of the United Nations Security Council . 
 The lead vessel of the class , INS Arihant was launched in 2009 and after extensive sea trials , was confirmed as ready for operations on 23 February 2016 . Arihant <a href='drop_aux' title='1'><mark>is</mark></a>the first ballistic missile submarine to <a href='been_done' title='2'><mark>have</mark></a> been built by a country other than one of the five permanent members of the United Nations Security Council . 
Da lead vessel of the class , INS Arihant was launched in 2009 and after extensive sea trials , was confirmed as ready fa operations on 23 February 2016 . Arihant tdafirst ballistic missile submarine to done been built by a country other than one of the five permanent members of the United Nations Security Council .