Alvama, it is an SSBN
And the first ship is in trials. She is to be commisioned this year sometime.
The next class in line as SSBN for the indian navy wil usel use 12 nuclear missiles in its hull. This one has 4.
Mitch all subs will receive 4 missile tubes, each containing 3 missiles. At first they will be equipped with the K-15 Sagarika
nuclear-capable missiles which have a range of 700km. Currently the Indian navy is developing the K-4 Agni long-range ballistic missile, of which the submarine will carry four at max.
Officially classified as Nuclear ballistic missile submarines, these submarines will most often carry out mission involving the K-15 cruise missiles. Logical because India will not have to for fill a continue ballistic present in the world, yet.