INS Betwa: Miscalculation of balance could have caused accident, says Manohar Parrikar

Earlier, the Navy spokesperson had said that the accident may be a failure of the block mechanism that is used to dock and undock ships. An inquiry was ordered by Navy immediately after the accident.

INS Betwa is one of the three Brahmaputra class 3,800-tonne guided missile frigates in service with the Navy, and was commissioned in 2004. It had gone for a medium-refit to the Mumbai dockyard in October and was to set out to sea later.