Project 15B is a class of stealth guided missile destroyers.  

• Warships built under Project 15Bravo, with a length of 163 metres and 17.4 metres at the beam and a displacement of 7.300 tonnes, are propelled by four gas turbines to achieve speeds in excess of 30 knots. 
• Ships under this project can carry and operate two multiple role helicopters. 
• Enhanced stealth features have been achieved through the shaping of hull and use of radar transparent deck fittings which make these ships difficult to detect. 

Source: The Hindu