India launched its first Domesticaly built Nuclear Submarine July 26, 2009. It had been working with Russia since mid 2002 to lease a Akula Class Submarine.

The most powerful submarine to date is the Akula (or NATO designation Typhoon) class boat, first launched in 1986 by the Russians. It has a maximum displacement of 12,770 tons submerged (for the Akula II).

Answering a most-powerful-millitary-vehicle/aircraft/ship is sometimes hard because a given piece of hardware might be longer, but lighter, etc. Certainly each piece of equipment has advantages and disadvantages over another, but, this submarine has the largest maximun load capacity. It has the greatest shaft horsepower rating, too. A link is provided below for more information.

Vikram Akula has written:

'A fistful of rice'

Beluga class submarine was created in 1988.

The Kursk was an Oscar II class submarine, of the Russian Navy.