In this method, pontoons are welded to the hull, which gives buoyancy and helps overcome tidal constraints.

The ship is expected to be ready for commissioning into the navy by 2012, preceded by the first warship of Project 15-A, INS Kolkata which will join the fleet next year.

MDL chairman and managing director Vice-Admiral (Retd) H.S. Malhi said the Project 15-A ships represent 'a major landmark in show-casing India's warship design and manufacturing capability'.

Earlier, Admiral Verma said the responsibilities of the navy have increased many folds after the 26/11 terror attacks and there is a need for unified command for coastal security.