Indian Prime Minister Dr. Manmohan Singh and his wife Gursharan Kaur launched India’s first nuclear-powered submarine INS Arihant , becoming only the sixth country in the world to do so.
The 6000 tonne INS Arihant submarine …

The submarine USS Grunion SS 216 was found off an island in the Aleutian chain says the U.S. Navy.
The USS Grunion disappeared July 30, 1942 with it’s 70 crew members after conducting operations against Japanese …