उत्तर : 2. "डॉ. ए.पी.जे. अब्दुल कलाम"
व्याख्या :

n 13 February 2006, during the submarine's deployment in Vishakhapatnam under the Eastern Naval Command, the then President of India A. P. J. Abdul Kalam became the first Indian head of state to sail in a submarine.